TANIBATA Naoto

写真a

Affiliation Department

Department of Life Science and Applied Chemistry
Department of Life Science and Applied Chemistry
Center for Innovative Young Researchers

Degree

  • 博士(工学) ( 2017.03   大阪府立大学 )

Research Interests

  • 蓄電池材料

  • 無機材料化学

  • 抵抗解析

  • 固体イオニクス

Research Areas

  • Nanotechnology/Materials / Inorganic compounds and inorganic materials chemistry

  • Nanotechnology/Materials / Inorganic materials and properties

From School

  • 大阪府立大学 大学院工学研究科 博士後期課程   物質・化学系専攻   応用化学分野   Graduated

    2014.04 - 2017.03

  • 大阪府立大学 大学院工学研究科 博士前期課程   物質・化学系専攻   応用化学分野   Graduated

    2012.04 - 2014.03

  • Osaka Prefecture University   Faculty of Engineering   Department of Applied Chemistry   Graduated

    2008.04 - 2012.03

  • 和歌山県立桐蔭高等学校   Graduated

    2005.04 - 2008.03

External Career

  • Nagoya Institute of Technology   Assistant Professor

    2017.04

  • 京都大学 触媒・電池元素戦略ユニット   拠点助教(兼任)

    2017.04

Professional Memberships

  • 日本セラミックス協会

  • 電気化学会

  • 日本セラミックス協会

  • 日本化学会電気化学ディビジョン科学電池材料研究会

 

Papers

  • Applying the HSAB design principle to the 3.5 V-class all-solid-state Li-ion batteries with a chloride electrolyte Reviewed

    Naoto Tanibata, Shuta Takimoto, Shin Aizu, Hayami Takeda, Masanobu Nakayama

    Journal of Materials Chemistry A   10 ( 39 )   20756 - 20760   2022.09

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:ROYAL SOC CHEMISTRY  

    All-solid-state Li-ion batteries are expected to be the next generation of batteries with a high energy density and safety. However, for Li-ion batteries to endure high-voltage operations, the decomposition of solid electrolytes must be suppressed first. A high potential at the cathode tends to promote battery degradation because of the oxidation of the cathode electrolyte. This study aims to achieve the high-potential operation of all-solid-state batteries using LiAlCl4 as a chloride electrolyte with a high oxidation resistance. However, batteries with commonly used oxide electrodes (e.g., LiFePO4) exhibit low capacity (∼0.5 mA h g−1), despite having working potentials less than the oxidation potential of LiAlCl4. First-principles calculations and 27Al MAS-NMR measurements suggest that acid–base reactions based on the hard and soft acid–base (HSAB) rule occur between the electrode and the electrolyte. In contrast, a high voltage of ∼3.65 V (vs. Li+/Li) and high-capacity utilisation (reversible capacity ∼100 mA h g−1) are observed at room temperature by combining the same chloride electrode (Li2FeCl4) without side reactions between these chlorides. These results indicate that material design based on the HSAB rule is also instructive when considering electrode/electrolyte material combinations, which realizes a 3.5 V-class all-solid-state Li-ion battery.

    DOI: 10.1039/D2TA05152D

    Web of Science

  • Metastable Chloride Solid Electrolyte with High Formability for Rechargeable All-Solid-State Lithium Metal Batteries Reviewed

    Naoto Tanibata, Shuta Takimoto, Koki Nakano, Hayami Takeda, Masanobu Nakayama, Hirofumi Sumi

    ACS Materials Letters   2 ( 8 )   880 - 886   2020.08

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society ({ACS})  

    Dense solid electrolytes in all-solid-state Li batteries are expected to suppress Li dendrite phenomena that prevent the application of high-energy-density Li metal electrodes. However, voids and cracks in sintered electrolytes still permit short-circuiting due to Li dendrites. This study aimed to investigate solid electrolytes with high formability in which green compacts can prevent Li dendrites. Li+ ion migration energies, bulk moduli, and energies above the hull were comprehensively investigated using first-principles and classical force field calculations as the indicators for ionic conductivity, formability, and thermodynamic stability. The 231 compounds containing Li and Cl listed in the Materials Project database were studied due to their high polarizability and weak Coulombic interaction with Li+ ions. Among them, monoclinic LiAlCl4 (LAC, S.G.: P121/c1) was focused on, owing to its low values of all three indicators. A mechanochemical synthesis was attempted to prepare the metastable phase, where Li ions occupy the interstitial sites, not just the original sites, because the computation for the migration energy suggested conductive pathways between the original Li sites. XRD and 7Li-MAS NMR measurements indicated that the mechanochemically synthesized LAC possessed a monoclinic host structure, while 2.5% Li occupied interstitial tetrahedral sites. Impedance measurements showed that the LAC green compacts exhibited an ionic conductivity of 2.1 × 10–5 S cm–1, 20 times higher than the conventional solid-state synthesized LAC at room temperature. The conductivity was more than one order of magnitude higher than that of garnet-type Li6.6La3Zr1.6Ta0.4O12 (LLZT), which has been attractive for the application of the sintered body for Li metal electrodes. The SEM observations and distribution of relaxation times analysis indicated that dense LAC green compacts with large necking between the particles contributed minimal grain-boundary resistance (7.5%) to the total resistance, while the LLZT green compacts contributed almost completely (99%). Li metal symmetric cells using the LAC pellet showed good cycle performance without short-circuiting and an overvoltage increase for 70 cycles at a current density of 0.1 mA cm–2, while short circuiting occurred at the 1st cycle in the LLZT cells.

    File: Manuscript file.pdf

    DOI: 10.1021/acsmaterialslett.0c00127

    Web of Science

  • Nanotube-structured Na2V3O7 as a Cathode Material for Sodium-Ion Batteries with High-rate and Stable Cycle Performances Reviewed International journal

    Naoto Tanibata, Yuki Kondo, Shohei Yamada, Masaki Maeda, Hayami Takeda, Masanobu Nakayama, Toru Asaka, Ayuko Kitajou, Shigeto Okada

    Scientific Reports   8 ( 1 )   17199 - 17199   2018.11

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Nature  

    © 2018, The Author(s). Sodium ion batteries meet the demand for large-scale energy storage, such as in electric vehicles, due to the material abundance of sodium. In this report, nanotube-type Na2V3O7 is proposed as a cathode material because of its fast sodium diffusivity, an important requirement for sodium ion batteries, through the investigation of ~4300 candidates via a high-throughput computation. High-rate performance was confirmed, showing ~65% capacity retention at a current density of 10C at room temperature, despite the large particle size of >5 μm. A good cycle performance of ca. 94% in capacity retention after 50 cycles was obtained owing to a small volumetric change of <0.4%.

    File: s41598-018-35608-9.pdf

    DOI: 10.1038/s41598-018-35608-9

    Web of Science

    Scopus

    PubMed

  • Computational studies on defect chemistry and Li-ion conductivity of spinel-type LiAl5O8 as coating material for Li-metal electrode. Reviewed International journal

    Shuntaro Miyakawa, Shogo Matsuda, Naoto Tanibata, Hayami Takeda, Masanobu Nakayama, Takaya Saito, Svetlana Fukuchi

    Scientific reports   12 ( 1 )   16672 - 16672   2022.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    Li-metal rechargeable batteries are an attractive option for devices that require an extremely high specific energy density, high robustness, and long-term durability, such as high-altitude platform stations. However, Li dendrite growth during charge-discharge cycling causes short-circuit problems. One technical solution is to form an intermediate layer between the Li metal and electrolyte. This interfacial layer should possess mechanical strength, electrochemical stability in the presence of Li, and Li-ion conductivity. In this study, the Li-ion conductivity of spinel-type LiAl5O8 was investigated using first-principles density functional theory and force field molecular dynamics calculations. The calculation results confirmed that stoichiometric LiAl5O8 compounds do not exhibit Li-ion conductivity, whereas off-stoichiometric compounds with excess Li show long-range Li-ion diffusion. The evaluated activation energy was 0.28 eV, which is as low as that of well-known fast Li-ion conductors, such as garnet-type Li7La3Zr2O12. However, the extrapolated Li-ion conductivity at 298 K was relatively low (~ 10-6 S/cm) owing to the limited formation of migration pathways.

    DOI: 10.1038/s41598-022-20289-2

    PubMed

  • Process optimisation for NASICON-type solid electrolyte synthesis using a combination of experiments and bayesian optimisation Reviewed

    Hayami Takeda, Hiroko Fukuda, Koki Nakano, Syogo Hashimura, Naoto Tanibata, Masanobu Nakayama, Yasuharu Ono, Takaaki Natori

    MATERIALS ADVANCES   2022.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ROYAL SOC CHEMISTRY  

    Na superionic conductor (NASICON)-type LiZr2(PO4)(3) (LZP) is an oxide-based solid electrolyte candidate for use in all-solid-state Li-ion batteries. However, as the ionic conductivity is insufficient, doping with aliovalent cations has been carried out to improve the Li-ion conductivity by controlling the composition and crystal structure. Li-ion conductivity is also affected by the microstructural properties of a sintered body, such as density, morphology, and elemental distribution, and thus, controlling process parameters, such as heating conditions during the solid-state reaction, improves conductivity. Using an exhaustive experimental approach, Ca and Si co-doped Li-rich NASICON-type LZP was synthesised via solid-state reactions under various two-step heating conditions to yield the highest Li-ion conductivity by optimising the conditions. The highest total Li-ion conductivity of 3.3 x 10(-5) S cm(-1) was obtained when the sample was first heated at 1050 degrees C and then heated at 1250 degrees C. The crystal structures, relative densities, micromorphologies, and Li-ion conductivities of the materials were characterised, and their relationships were investigated. These relationships were complex, and intuitively determining the optimal conditions was challenging with only a few experiments. Instead, as a proof-of-concept study, the collected data were used to demonstrate that Bayesian optimisation (BO) efficiently improved the experimental determination of the optimal heating conditions. The BO-guided experimental investigation determined the optimal conditions more rapidly compared to conventional trial-and-error approaches employed in the materials industry. The efficiency factor was approximately double that of the exhaustive search.

    DOI: 10.1039/d2ma00731b

    Web of Science

  • Bayesian optimisation with transfer learning for NASICON-type solid electrolytes for all-solid-state Li-metal batteries Reviewed

    Hiroko Fukuda, Shunya Kusakawa, Koki Nakano, Naoto Tanibata, Hayami Takeda, Masanobu Nakayama, Masayuki Karasuyama, Ichiro Takeuchi, Takaaki Natori, Yasuharu Ono

    RSC Advances   12 ( 47 )   30696 - 30703   2022.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    Demonstrate BO approaches to search for optimal composition with high ionic conductivity efficiently.

    DOI: 10.1039/D2RA04539G

  • Growth Mechanism of Spiky Nb2O5 Nanoparticles and their Electrochemical Property Reviewed

    Teruaki Fuchigami, Hayato Yamamoto, Naoto Tanibata, Masanobu Nakayama, Ken-ichi Kakimoto

    PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS   259 ( 9 )   2022.09

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:WILEY-V C H VERLAG GMBH  

    Spiky nanoarchitecture composed of numerous nanorods and a spherical core has applications in various fields because of its high performance and durability. However, controlling the spiky structure is challenging because of an unclear formation mechanism. This study investigates the growth mechanism of spiky nanostructure by hydrothermally synthesizing Nb2O5 with various conditions and additives, and it is shown that adsorption and gradual decomposition of ligands promote the formation of the spiky shape. Using oxalic acid as an additive and synthesizing at 160 degrees C, which is below oxalic acid's decomposition temperature, spherical Nb2O5 with a rough surface that consists of a nanostructure with less than 5 nm size forms, and its surface is protected by oxalate ions. When the synthesis temperature increases to 180 degrees C, oxalate ions are decomposed, and nanorods grow on the spherical particles. The results show that oxalate ions suppress particle growth, promote self-assembly, and control subsequent particle growth, resulting in complex nanostructures. When used as anode material in lithium-ion batteries, the spiky Nb2O5 nanoparticles show a higher capacity (143 mAh g(-1)) than collapsed spiky particles (92 mAh g(-1)) and nanorods (37 mAh g(-1)) because of fast lithium-ion diffusion on the surface nanostructure and high dispersibility.

    DOI: 10.1002/pssb.202100642

    Web of Science

  • Na superionic conductor-type LiZr2(PO4)3 as a promising solid electrolyte for use in all-solid-state Li metal batteries Reviewed International journal

    Masanobu Nakayama, Koki Nakano, Maho Harada, Naoto Tanibata, Hayami Takeda, Yusuke Noda, Ryo Kobayashi, Masayuki Karasuyama, Ichiro Takeuchi, Masashi Kotobuki

    Chemical Communications   58 ( 67 )   9328 - 9340   2022.08

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    Language:English   Publishing type:Research paper (scientific journal)  

    All-solid-state Li-ion batteries are of considerable interest as safer alternatives to Li-ion batteries containing flammable organic electrolytes. To date, however, achieving sufficient charging and discharging rates, in addition to capacity, at room temperature using these all-solid-state batteries has been challenging. To overcome these issues, material simulations and informatics investigations of a relatively new Na superionic conductor (NASICON)-type LiZr2(PO4)3 (LZP) electrolyte were conducted to elucidate its characteristics and material functions. The following thermodynamic and/or kinetic properties of NASICON-type Li-ion conductive oxides were investigated with respect to the crystal structure mainly using material simulation and informatics approaches: (1) the electrochemical stabilities of LZP materials with respect to Li metal and (2) Li-ion conductivities in the bulk and at the grain boundaries. An efficient materials informatics search method was employed to optimise the material functions of the LZP electrolyte via Bayesian optimisation. This study should promote the application of LZP in all-solid-state batteries for use in technologies such as mobile devices and electric vehicles and enable more complex composition and process control.

    DOI: 10.1039/D2CC01526A

    PubMed

  • Chemical Composition Data-Driven Machine-Learning Prediction for Phase Stability and Materials Properties of Inorganic Crystalline Solids Reviewed

    Taruto Atsumi, Kosei Sato, Yudai Yamaguchi, Masato Hamaie, Risa Yasuda, Naoto Tanibata, Hayami Takeda, Masanobu Nakayama, Masayuki Karasuyama, Ichiro Takeuchi

    PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS   2022.02

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:WILEY-V C H VERLAG GMBH  

    Materials informatics has attracted significant attention toward the efficient discovery and development of new functional materials. Machine-learning regression techniques have often been used to establish a link between properties. In this respect, precise and rational regression is contingent on the choice of descriptors used to represent both composition and structural information. The usage of structure-derived descriptors restricts the prediction range to the registered materials in the crystal structure database owing to the structural information requirements. Conversely, machine-learning regression based only on compositional descriptors is free from this restriction, despite the fact that the prediction performance may diminish. Herein, their prediction performance is improved using compositional descriptors with histograms, and detailed surveys are performed on their ability to extrapolate. The proposed model achieves a high prediction accuracy based on the area under the receiver operating characteristic (ROC) curve (specifically, AUC > 0.9).

    DOI: 10.1002/pssb.202100525

    Web of Science

  • Octahedral Tilting and Modulation Structure in Perovskite‐Related Compound La 1/3 NbO 3 Reviewed

    Yusuke Sakai, Daisuke Urushihara, Toru Asaka, Koichiro Fukuda, Zijian Yang, Naoto Tanibata, Hayami Takeda, Masanobu Nakayama

    physica status solidi (b)   259 ( 9 )   2022.01

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    The crystal structure of the A-site-deficient perovskite La1/3NbO3 is investigated using X-ray powder diffraction, transmission electron microscopy (TEM), and computational methods. The NbO6 octahedral tilting is observed and confirmed to be in an a (-) b (0) c (0) manner in Glazer's notation. An incommensurate modulation structure in La1/3NbO3 is observed. Using scanning TEM (STEM) analyses and Monte Carlo simulations, the modulated structure is shown to originate from a striped arrangement of La and vacancies. The satellite reflections arising from the modulation structure are observed as a diffuse scatter in the electron diffraction patterns. By analyses with STEM and molecular dynamics calculations, it is concluded that the origin of diffuse scattering is the existence of nanoscale twin variants with different crystal orientations. The Nb ions in NbO6 octahedra represent an off-center shift like a pseudo-Jahn-Teller distortion. The shift of Nb ions is found to be cooperative with the concentration modulation of La ions.

    DOI: 10.1002/pssb.202100561

    Web of Science

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Books and Other Publications

Misc

  • High-efficiency composition optimization of high Li-ion conductor using material simulation and Bayesian optimization

    中野高毅, 谷端直人, 谷端直人, 武田はやみ, 武田はやみ, 中山将伸, 中山将伸, 中山将伸, 野田祐輔, 小林亮, 小林亮, 竹内一郎, 竹内一郎, 竹内一郎

    電気化学会大会講演要旨集(CD-ROM)   87th   2020

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  • 第一原理計算によるMgイオン伝導体MgZr4(PO4)6のイオン伝導度および相安定性評価

    中野高毅, 野田祐輔, 谷端直人, 谷端直人, 中山将伸, 中山将伸, 中山将伸, 梶原浩一, 金村聖志

    21st   2019

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  • 材料シミュレーションによるNASICON型Liイオン伝導体の相安定性と導電性評価

    中野高毅, 大竹将成, 宮路康裕, 谷端直人, 小林亮, 小林亮, 野田祐輔, 武田はやみ, 武田はやみ, 中山将伸, 中山将伸, 中山将伸

    31st   2018

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  • Research on charge compensation mechanism of rocksalt-type positive electrode material LiNb<sub>1/3</sub>Ni<sub>2/3</sub>O<sub>2</sub> in first-principles study

    原田真帆, 谷端直人, 谷端直人, 野田祐輔, 中山将伸, 中山将伸, 中山将伸, 薮内直明

    Journal of Flux Growth   13 ( 2 )   2018

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Presentations

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Industrial Property Rights

Awards

  • 若手研究イノベータ奨励賞

    2020.03   名古屋工業大学  

    谷端直人

  • 若手研究イノベータ奨励賞

    2019.03   名古屋工業大学  

    谷端 直人

  • 第12回固体イオニクスセミナー 若手依頼講演 講演奨励賞

    2018.09   日本固体イオニクス学会   ナトリウムイオン電池用新規 Na2V3O7電極の特性評価と第一原理計算による拡散機構解析

    谷端 直人

  • ベストプレゼンテーション賞

    2016.09   日本セラミックス協会  

    谷端 直人

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    Award type:Award from Japanese society, conference, symposium, etc. 

  • Excellent Presentation Award 2016

    2016.08   日本セラミックス協会ガラス部会  

    谷端 直人

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    Award type:Award from Japanese society, conference, symposium, etc. 

  • TECHNOVATION大賞

    2016.03   足立一馬基金  

    谷端 直人

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    Award type:Award from publisher, newspaper, foundation, etc. 

  • 関西電気化学奨励賞

    2015.12   関西電気化学研究会  

    谷端 直人

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    Award type:Award from Japanese society, conference, symposium, etc. 

  • ベストプレゼンテーション賞

    2015.09   日本セラミックス協会  

    谷端 直人

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    Award type:Award from Japanese society, conference, symposium, etc. 

  • Excellent Presentation Award 2015

    2015.08   日本セラミックス協会ガラス部会  

    谷端 直人

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    Award type:Award from Japanese society, conference, symposium, etc. 

  • 学生講演賞

    2015.07   日本セラミックス協会関西支部  

    谷端 直人

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    Award type:Award from Japanese society, conference, symposium, etc. 

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Scientific Research Funds Acquisition Results

  • 高成形性を有する新規イオン伝導体を用いた高エネルギー密度全固体電池の実現

    2021.04 - 2022.03

    永井科学技術財団  研究奨励金 

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    Authorship:Principal investigator 

  • 次世代型高容量二次電池用アモルファス電極における硫黄レドックス制御と創成

    Grant number:19K15657  2019.04 - 2022.03

    日本学術振興会  科学研究費補助金  若手研究(B)

    谷端直人

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    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

  • 学内研究推進経費

    2019.04 - 2020.03

    名古屋工業大学  学内研究推進経費 

    谷端直人

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    Authorship:Principal investigator 

  • 硫化物単味電極を用いた次世代全固体ナトリウム電池の開発

    2018.04 - 2019.03

    民間財団等 一般財団法人東海産業技術振興財団  研究助成金 

    谷端直人

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    Authorship:Principal investigator 

    Grant amount:\700000

  • 全固体ナトリウム‐硫黄電池の実現にむけた材料および構造に関する研究

    Grant number:15J12341  2015.04 - 2017.03

    日本学術振興会  科学研究費助成事業 特別研究員奨励費  特別研究員奨励費

    谷端 直人

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    Grant amount:\1700000 ( Direct Cost: \1700000 )

    本年度は、前年度に引き続き、従来の電極よりも高容量を示す「十硫化四リンを用いたアモルファス状硫黄電極」についての研究を行った。本年度は、核磁気共鳴分光 (NMR) 測定や光電子分光 (XPS) 測定などを測定し、全固体ナトリウム電池における十硫化四リンを用いたアモルファス状硫黄電極の構造解析を行った。これらの構造解析を複合的に考慮した結果、充放電に伴い、イオン伝導パスが形成される充放電機構を明らかにした。また、透過電子顕微鏡による硫黄電極の観察から、そのイオン伝導パスがナノスケールで結晶化している様子が観測された。
    一方、十硫化四リンを用いたアモルファス状硫黄電極を用いた全固体リチウム電池は、全固体ナトリウム電池より高容量を示す。全固体リチウム電池においても構造解析を行った結果、ナトリウム系と同様の充放電反応が進行していることが明らかになった。しかし、リチウム系においては、充放電後の結晶化は生じていないことが明らかになった。これらの結果から、ナトリウム系におけるイオン伝導パスの結晶化は容量劣化の要因になると考えられる。そこで、十硫化四リンの一部を二硫化ケイ素に置き換え多成分化することによって、この結晶化の抑制に成功した。その結果、充放電容量も増加し、全固体ナトリウム電池における最大の充放電容量を達成した。これらの研究内容に関しては、日本セラミックス協会や関西電気化学研究会などからポスター賞を受賞している。

Other External Funds

  • 高成形性を有する新規イオン伝導体を用いた高エネルギー密度全固体電池の実現

    2021.04 - 2022.03

    永井科学技術財団  研究奨励金 

    谷端 直人

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    Grant type:Competitive

  • 学内研究推進経費

    2019.04 - 2020.03

    名古屋工業大学  学内研究推進経費 

    谷端 直人、谷端直人

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    Grant type:Competitive

  • 硫化物単味電極を用いた次世代全固体ナトリウム電池の開発

    2018.04 - 2019.03

    民間財団等 一般財団法人東海産業技術振興財団  研究助成金 

    谷端 直人、谷端直人

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    Grant type:Competitive

  • 全固体ナトリウム‐硫黄電池の実現にむけた材料および構造に関する研究

    2015.04 - 2017.03

    日本学術振興会  科学研究費助成事業 特別研究員奨励費 

    谷端 直人、谷端 直人

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    Grant type:Competitive

    本年度は、前年度に引き続き、従来の電極よりも高容量を示す「十硫化四リンを用いたアモルファス状硫黄電極」についての研究を行った。本年度は、核磁気共鳴分光 (NMR) 測定や光電子分光 (XPS) 測定などを測定し、全固体ナトリウム電池における十硫化四リンを用いたアモルファス状硫黄電極の構造解析を行った。これらの構造解析を複合的に考慮した結果、充放電に伴い、イオン伝導パスが形成される充放電機構を明らかにした。また、透過電子顕微鏡による硫黄電極の観察から、そのイオン伝導パスがナノスケールで結晶化している様子が観測された。
    一方、十硫化四リンを用いたアモルファス状硫黄電極を用いた全固体リチウム電池は、全固体ナトリウム電池より高容量を示す。全固体リチウム電池においても構造解析を行った結果、ナトリウム系と同様の充放電反応が進行していることが明らかになった。しかし、リチウム系においては、充放電後の結晶化は生じていないことが明らかになった。これらの結果から、ナトリウム系におけるイオン伝導パスの結晶化は容量劣化の要因になると考えられる。そこで、十硫化四リンの一部を二硫化ケイ素に置き換え多成分化することによって、この結晶化の抑制に成功した。その結果、充放電容量も増加し、全固体ナトリウム電池における最大の充放電容量を達成した。これらの研究内容に関しては、日本セラミックス協会や関西電気化学研究会などからポスター賞を受賞している。

 

Teaching Experience

  • 化学実験

    2017.10 Institution:Nagoya Institute of Technology

  • 生命・応用化学セミナー3、4

    2017.04 Institution:Nagoya Institute of Technology

  • 生命・応用化学セミナー1、2

    2017.04 Institution:Nagoya Institute of Technology

  • セラミックス応用学実験Ⅱ

    2017.04 Institution:Nagoya Institute of Technology

  • セラミックス応用学実験Ⅰ

    2017.04 Institution:Nagoya Institute of Technology

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Committee Memberships

  • 日本セラミックス協会   第58回セラミックス基礎科学討論会 現地実行委員  

    2019.10 - 2020.01   

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    Committee type:Academic society

  • 日本化学会電気化学ディビジョン科学電池材料研究会   日本化学会電気化学ディビジョン科学電池材料研究会 第12回日仏電池セミナー 12th Japan-France Joint Seminar on Batteries事務局   

    2018.09   

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    Committee type:Academic society

  • 日本セラミックス協会   第31 回秋季シンポジウム現地実行委員  

    2018.09   

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    Committee type:Academic society

Social Activities

  • 名古屋産業振興公社 異業種交流会 講演

    Role(s): Lecturer

    公益財団法人名古屋産業振興公社  異業種交流会  2021.09

  • 高速充放電可能な次世代電池用セラミックスの発見

    Role(s): Lecturer

    名古屋工業大学  公開講座  2019.11

  • あいちSTEM能力育成事業「知の探究講座」を講座および審査委員

    Role(s): Demonstrator

    2019.11

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    Audience: High school students

  • 名古屋工業大学 公開講座 発表

    Role(s): Lecturer

    2019.10

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    Audience: General, Company

    Type:Lecture

  • オンライン国際研究広報「EurekAlert!」に研究成果掲載

    2019.02

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    Audience: High school students, College students, Graduate students, Teachers, Researchesrs, General, Scientific, Company, Media

    Type:Internet

    オンライン国際研究広報「EurekAlert!」に研究成果掲載
    12,762 PV/掲載一週間; 本学からのリリースで過去最多

  • あいちSTEM能力育成事業「知の探究講座」講座および審査委員担当

    Role(s): Lecturer, Demonstrator

    愛知県  2018 - 2019

  • 研究室見学

    Role(s): Lecturer, Demonstrator

    名古屋工業大学  オープンキャンパス  2018

  • 研究室見学

    Role(s): Lecturer, Demonstrator

    名古屋工業大学  オープンキャンパス  2017

Media Coverage

Academic Activities

  • 第58回セラミックス基礎科学討論会 現地実行委員

    Role(s): Planning, management, etc.

    日本セラミックス協会  2020

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    Type:Competition, symposium, etc. 

  • 日本セラミックス協会 第31 回秋季シンポジウム現地実行委員

    Role(s): Planning, management, etc.

    日本セラミックス協会  2018

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    Type:Academic society, research group, etc. 

  • 日本化学会電気化学ディビジョン科学電池材料研究会 第12回日仏電池セミナーの事務局 12th Japan-France Joint Seminar on Batteriesを開催

    Role(s): Planning, management, etc.

    日本化学会電気化学ディビジョン科学電池材料研究会  2018

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    Type:Competition, symposium, etc.