Kei Nakayama

Profile Information

Affiliation: Japan Fine Ceramics Center

Degree: Doctor of Science(Jul, 2017, Waseda University)

Researcher number: 30732193
ORCID ID: https://orcid.org/0000-0002-8403-0551
J-GLOBAL ID: 201401011648344066
researchmap Member ID: 7000007458

Research Interests

Research Areas

Research History

Apr, 2021 - Present

Nanostructures Research Laboratory, Japan Fine Ceramics Center
Aug, 2017 - Mar, 2021

Project Researcher, The Graduate School of Engineering, The University of Tokyo
Apr, 2014 - Mar, 2017

Research Associate, School of Fundamental Science and Engineering, Waseda University

Education

Apr, 2014 - Jul, 2017

Department of Electronic and Physical Systems, Graduate School of Fundamental Science and Engineering, Waseda University
Apr, 2012 - Mar, 2014

Department of Electronic and Photonic Systems, Graduate School of Fundamental Science and Engineering, Waseda University
Apr, 2008 - Mar, 2012

Department of Electronic and Photonic Systems, School of Fundamental Science and Engineering, Waseda University

Major Papers

Composite anode for fluoride-ion batteries using alloy formation and phase separation in charge and discharge processes

Kei Nakayama, Hidenori Miki, Takashi Nakagawa, Kousuke Noi, Yoshihiro Sugawara, Shunsuke Kobayashi, Katsutoshi Sakurai, Hideki Iba, Akihide Kuwabara, Yuichi Ikuhara …

Journal of Materials Chemistry A, Mar 4, 2024 Peer-reviewedLead authorCorresponding author
Artifactual atomic displacements on surfaces using annular dark-field images with image simulation

Shunsuke Kobayashi, Kousuke Ooe, Kei Nakayama, Akihide Kuwabara

Microscopy, Jan 13, 2024 Peer-reviewed
Highly durable bifunctional gas diffusion electrodes fabricated with melilite-type Fe/Co/Ni-mixed oxide electrocatalysts

Satoshi Ogawa, Kei Nakayama, Misaki Katayama, Ryo Ishikawa, Yuichi Ikuhara, Miwa Saito, Teruki Motohashi

ACS Applied Energy Materials, 5(12) 15502-15509, Dec 9, 2022 Peer-reviewed
Fluoride-ion conversion alloy for fluoride-ion batteries

Kei Nakayama, Ryo Ishikawa, Takeshi Tojigamori, Hidenori Miki, Hideki Iba, Naoya Shibata, Yuichi Ikuhara

Journal of Materials Chemistry A, 10(7) 3743-3749, Jan 25, 2022 Peer-reviewedLead author
Room temperature fluoride ion conductivity in defective β-KSb_1-δF_4-3δ polycrystals

Kazuaki Kawahara, Ryo Ishikawa, Kei Nakayama, Naoya Shibata, Yuichi Ikuhara

Journal of Power Sources, 483 229173, Jan, 2021 Peer-reviewed
Dislocation and oxygen-release driven delithiation in Li₂MnO₃

Kei Nakayama, Ryo Ishikawa, Shunsuke Kobayashi, Naoya Shibata, Yuichi Ikuhara

Nature Communications, 11(1) 4452, Sep 8, 2020 Peer-reviewedLead author
Stabilization of a honeycomb lattice of IrO₆ octahedra by formation of ilmenite-type superlattices in MnTiO₃

Kei Miura, Kohei Fujiwara, Kei Nakayama, Ryo Ishikawa, Naoya Shibata, Atsushi Tsukazaki

Communications Materials, 1(1) 55, Aug 12, 2020 Peer-reviewed
Synthesis of Novel Melilite-Type Iron/Cobalt Oxides and Their Oxygen Evolution Reaction Electrocatalytic Activity

Satoshi Ogawa, Yasuyo Ogino, Masao Yonemura, Toshiharu Fukunaga, Hisao Kiuchi, Kei Nakayama, Ryo Ishikawa, Yuichi Ikuhara, Yoshihiro Doi, Kenta Suzuki …

Chemistry of Materials, 32(16) 6847-6854, Jun 22, 2020 Peer-reviewed
Fast Li-ion conduction at grain boundaries in (La,Li)NbO₃ polycrystals

Kazuaki Kawahara, Ryo Ishikawa, Kei Nakayama, Takuma Higashi, Teiichi Kimura, Yumi H. Ikuhara, Naoya Shibata, Yuichi Ikuhara

Journal of Power Sources, 441 227187, Nov, 2019 Peer-reviewed
Transition-Metal Distribution in Brownmillerite Ca₂FeCoO₅

Kei Nakayama, Ryo Ishikawa, Akihide Kuwabara, Shunsuke Kobayashi, Teruki Motohashi, Naoya Shibata, Yuichi Ikuhara

Inorganic Chemistry, 58(15) 10209-10216, Aug 5, 2019 Peer-reviewedLead author
Crystallographic features of the approximant H (Mn₇Si₂V) phase in the Mn–Si–V alloy system

Kei Nakayama, Takumi Komatsuzaki, Yasumasa Koyama

Philosophical Magazine, 98(20) 1823-1847, Jul 13, 2018 Peer-reviewedLead authorCorresponding author
Crystallographic Relationship between the ν (Mn₈₂Si₁₈) and H (Mn₇Si₂V) Phases in the Mn-Si-V Alloy System

Kei Nakayama, Daichi Kurihara, Yasumasa Koyama

Materials Transactions, 59(7) 1051-1056, Jul 1, 2018 Peer-reviewedLead authorCorresponding author
Possible nucleus of the Bergman cluster in the Zn–Mg–Y alloy system

Kei Nakayama, Masaya Nakagawa, Yasumasa Koyama

Philosophical Magazine, 98(3) 219-236, Jan 22, 2018 Peer-reviewedLead authorCorresponding author
Formation of giant atomic clusters in the β-Samson (β-Al₃Mg₂) phase of the Al-Mg alloy system

Kei Nakayama, Hijiri Tsuruta, Yasumasa Koyama

Acta Materialia, 128 249-257, Feb 6, 2017 Peer-reviewedLead authorCorresponding author
Crystallographic Features and State Stability of the Decagonal Quasicrystal in the Al–Co–Cu Alloy System

Kei Nakayama, Akito Mizutani, Yasumasa Koyama

Journal of the Physical Society of Japan, 85(11) 114602-114602, Nov 15, 2016 Peer-reviewedLead authorCorresponding author

Awards

Mar, 2022

永井科学技術財団賞「特定課題研究奨励金」, Liイオン電池正極内部の局所原子構造解析技術の開発, 永井科学技術財団

仲山啓
Mar, 2022

第72回金属組織写真賞優秀賞, Pt₃Co合金触媒粒子表面Pt skin層の精密原子間距離計測, 日本金属学会

大森雄貴, 黄馨慧, 仲山啓, 小林俊介, 桑原彰秀
Sep, 2021

第34回秋季シンポジウム特定セッション優秀講演賞, Ca₂FeCoO₅におけるFe/Co分布の原子分解能STEM-EDX直接観察, 日本セラミックス協会

仲山啓
Jul, 2021

第46回学術写真賞優秀賞, Ca₂FeCoO₅におけるFe/Co分布の原子分解能直接観察, 日本セラミックス協会

仲山啓, 石川亮, 桑原彰秀, 小林俊介, 本橋輝樹, 柴田直哉, 幾原雄一
Nov, 2020

第45回学術写真賞優秀賞, 高容量Li₂MnO₃結晶中のリチウム脱離・未脱離領域界面の原子構造解析, 日本セラミックス協会

仲山啓, 石川亮, 小林俊介, 柴田直哉, 幾原雄一
Sep, 2015

第25回日本金属学会講演大会優秀ポスター賞, Mn-Si-V合金における近似結晶H相の結晶構造と構造欠陥の特徴, 日本金属学会

小松崎巧, 仲山啓, 井上靖秀, 小山泰正

Misc.

原子分解能STEM-EDXによるCa₂FeCoO₅のFe/Co分布解析

仲山啓, 石川亮, 本橋輝樹, 幾原雄一

セラミックス, 57(10) 662-665, Oct, 2022 Peer-reviewedInvited
高容量リチウム過剰系リチウム電池の劣化メカニズムを解明

仲山啓

セラミックス, 55(12) 911, Dec, 2020 Invited

Presentations

ソフトモードインフォマティクスによる巨大誘電率材料探索

森分博紀, 設樂一希, 横井里江, 田口綾子, 加藤丈晴, 仲山啓, 山本文子, 濱崎容丞, 江原祥隆, 伊藤満

日本セラミックス協会2024年年会, Mar 15, 2024
Ferroelectric Materials Studies using First-principles Calculations and Materials Informatics

Hiroki Moriwake, Rie Yokoi, Kazuki Shitara, Ryuji Yoshida, Hsin-Hui Huang, Kei Nakayama, Shunsuke Kobayashi, Takeharu Kato

STAC_D2MatE, Feb 29, 2024
Origin of electronic conduction in H-doped ultra-wide bandgap SrO thin film

Sakura Yoshikawa, Xinyi He, Takayoshi Katase, Shigenori Ueda, Shunsuke Kobayashi, Kei Nakayama, Takeharu Kato, Hiroki Moriwake, Toshio Kamiya

STAC_D2MatE, Feb 29, 2024
超ワイドギャップ酸化物SrO薄膜の水素化により観測された電子伝導性と起源

吉川桜良, ホシンイ, 片瀬貴義, 上田茂典, 小林俊介, 仲山啓, 加藤丈晴, 森分博紀, 神谷利夫

第43回電子材料研究討論会, Nov 10, 2023, 日本セラミックス協会電子材料部会
Processing and Characterization of Epitaxial Cathode-electrolyte Interfaces in All-solid-state Thin-film Lithium-ion Batteries

Yumi Ikuhara, Shunsuke Kobayashi, Kei Nakayama, Craig Fisher, Akihide Kuwabara, Yuichi Ikuhara

MS&T23 (The Materials Science & Technology), Oct 3, 2023
新規ダブルペロブスカイト型遷移金属酸化物A₂MTeO₆における秩序構造と磁性

鈴木匠, 恩地涼樹, 仲山啓, 小林俊介, 世古敦人, 高橋英史, 石渡晋太郎

日本物理学会第78回年次大会, Sep 18, 2023
Microstructure change in composite anode for fluoride-ion batteries during charge/discharge processes

Kei Nakayama, Hidenori Miki, Takashi Nakagawa, Yoshihiro Sugawara, Shunsuke Kobayashi, Kousuke Noi, Katsutoshi Sakurai, Hideki Iba, Akihide Kuwabara, Yuichi Ikuhara, Takeshi Abe

IMC20 (The 20th International Microscopy Congress), Sep 13, 2023
全固体電池用正極膜-固体電解質の作製とナノ構造解析

幾原裕美, 小林俊介, 仲山啓, 桑原彰秀, 幾原雄一

日本セラミックス協会第36回秋季シンポジウム, Sep 7, 2023
S/TEMによるフッ化物イオン電池合材負極In/LaF₃の脱フッ化・フッ化反応解析

仲山啓, 三木秀教, 中川嵩士, 野井浩祐, 菅原義弘, 小林俊介, 櫻井勝俊, 射場英紀, 桑原彰秀, 幾原雄一, 安部武志

日本セラミックス協会第36回秋季シンポジウム, Sep 6, 2023
大きくLi脱離したLiCoO₂のS/TEM解析

仲山啓, 小林俊介, 石川亮, 桑原彰秀, 幾原雄一

日本セラミックス協会第36回秋季シンポジウム, Sep 6, 2023
Atomic Resolution Transmission Electron Microscopy with Information Science (ARTEMIS) for High-speed Dynamic Observation

Tsukasa Hirayama, Satoshi Anada, Yuki Nomura, Shunsuke Kobayashi, Kei Nakayama, Takeruru Kato, Tadahiro Kawasaki, Kazuo Yamamoto

IAMNano2023（International workshop on Advances and In-situ Microscopies of Functional Nanomaterials and Devices), Jun 30, 2023
Composite Anode for Fluoride-ion Batteries Using the Formation of an Intermetallic Phase

Kei Nakayama, Hidenori Miki, Takashi Nakagawa, Yoshihiro Sugawara, Shunsuke Kobayashi, Kousuke Noi, Katsutoshi Sakurai, Hideki Iba, Akihide Kuwabara, Yuichi Ikuhara, Takeshi Abe

IAMNano2023（International workshop on Advances and In-situ Microscopies of Functional Nanomaterials and Devices), Jun 29, 2023
Nano- and Atomic-scale Structural Changes in Heavily Delithiated LiCoO₂

Kei Nakayama, Shunsuke Kobayashi, Ryo Ishikawa, Akihide Kuwabara, Yuichi Ikuhara

IAMNano2023（International workshop on Advances and In-situ Microscopies of Functional Nanomaterials and Devices), Jun 28, 2023
S/TEMによるフッ化物電池合材負極In/LaF₃のRedox反応解析

仲山啓, 三木秀教, 中川嵩士, 菅原義弘, 小林俊介, 野井浩祐, 櫻井勝俊, 射場英紀, 桑原彰秀, 幾原雄一, 安部武志

日本顕微鏡学会第79回学術講演会, Jun 27, 2023
大きくLi脱離したLiCoO₂のS/TEMによる微細構造解析

仲山啓, 小林俊介, 石川亮, 桑原彰秀, 幾原雄一

日本顕微鏡学会第79回学術講演会, Jun 27, 2023
Structural analysis of battery materials using scanning transmission electron microscopy

Kei Nakayama

HSM2023 (Hierarchical Structure of Materials 2023), Mar 17, 2023 Invited
Structural analysis of battery materials by atomic-resolution scanning transmission electron microscopy

Kei Nakayama, Ryo Ishikawa, Yuichi Ikuhara

FMS2022 (The 6th International Symposium on Frontiers in Materials Science), Nov 22, 2022 Invited
走査透過型電子顕微鏡によるフッ化物電池負極In-LaF₃のRedox反応解析

仲山啓, 菅原義弘, 小林俊介, 中川嵩士, 野井浩祐, 三木秀教, 櫻井勝俊, 桑原彰秀, 幾原雄一, 安部武志

第63回電池討論会, Nov 9, 2022, 公益社団法人電気化学会電池技術委員会
LaNi₅のフッ化・脱フッ化過程の走査透過型電子顕微鏡解析

仲山啓, 石川亮, 當寺ヶ盛健志, 三木秀教, 射場英紀, 柴田直哉, 幾原雄一

日本セラミックス協会第35回秋季シンポジウム, Sep 15, 2022
STEMによるLaNi₅のフッ化・脱フッ化過程の解析

仲山啓, 石川亮, 當寺ヶ盛健志, 三木秀教, 射場英紀, 柴田直哉, 幾原雄一

日本顕微鏡学会第78回学術講演会, May 12, 2022

Teaching Experience

Oct, 2016 - Mar, 2017

理工学基礎実験1B (早稲田大学)
Apr, 2016 - Sep, 2016

理工学基礎実験2B (早稲田大学)
Oct, 2015 - Mar, 2016

理工学基礎実験1B (早稲田大学)
Apr, 2014 - Sep, 2015

理工学基礎実験2B (早稲田大学)

Professional Memberships

Jun, 2021 - Present

The Japan Society of Applied Physics
Jun, 2020 - Present

The Japanese Society of Microscopy
Jun, 2020 - Present

The Ceramic Society of Japan
May, 2012 - Present

The Japan Institute of Metals and Materials

Research Projects

蓄電池充放電反応の原子分解能その場観察

戦略的な研究開発の推進戦略的創造研究推進事業さきがけ, 科学技術振興機構, Oct, 2023 - Mar, 2027

仲山啓
蓄電池電極材料内部における局所構造変化の動的挙動解析技術の開発

研究助成, 公益財団法人日本板硝子材料工学助成会, Apr, 2023 - Mar, 2026

仲山啓
Measurements of ion dynamics at the solid-solid interfaces for all-solid-state batteries using electron microscopy

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, Apr, 2023 - Mar, 2026
原子分解能電子顕微鏡による蓄電池電極材料の酸化還元反応その場観察技術の開発

科学研究費助成事業, 若手研究, 日本学術振興会, Apr, 2023 - Mar, 2026

仲山啓
走査透過型電子顕微鏡と単結晶試料を活用したLiイオン電池正極内部の局所原子構造解析手法の開発

単年度研究助成, 公益財団法人池谷科学技術振興財団, Apr, 2022 - Mar, 2023

仲山啓
Crystallographic relation between coordination-polyhedron structures involving dodecagonal atomic columns and approximant-phase structures related to the dodecagonal quasicrystal

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2015 - Mar, 2018

Koyama Yasumasa, INOUE Yasuhide

Industrial Property Rights

特開2023-10389 フッ化物イオン電池用の正極活物質、フッ化物イオン電池、及びそれらの製造方法

石川亮, 幾原雄一, 仲山啓, 當寺ヶ盛健志, 三木秀教, 射場英紀
特開2022-11988 フッ化物イオン伝導体及びその製造方法

川原一晃, 石川亮, 仲山啓, 柴田直哉, 幾原雄一

Media Coverage

ＪＦＣＣ、フッ化物電池負極材、繰り返し充放電確認

化学工業日報社, 化学工業日報, 4面, Mar 14, 2024 Newspaper, magazine
永井科技財団賞決まる

中日新聞社, 中日BIZナビ, Mar 17, 2022 Internet
素形材研究32件表彰永井科学技術財団

中部経済新聞社, 中部経済新聞, Mar 16, 2022 Newspaper, magazine
永井科学技術財団、今年度研究助成決まる財団賞14件・奨励金18件

日刊工業新聞社, 日刊工業新聞, Mar 16, 2022 Newspaper, magazine
リチウムイオン電池を高性能に

中日新聞社, 中日新聞, 22面, Sep 21, 2020 Newspaper, magazine
次世代リチウム電池の充電過程、東大が解明

日刊工業新聞社, 日刊工業新聞, Sep 16, 2020 Newspaper, magazine
リチウムイオン電池の充電過程を原子レベルで解明

EE Times Japan, Sep 15, 2020 Internet
リチウム電池を超える次世代高容量リチウム電池の充電過程を原子レベルで解明東大

fabcross for エンジニア, Sep 14, 2020 Internet
リチウム電池の充電過程解明、東大

科学新聞社, 科学新聞, 2020年09月11日発売号 3面, Sep 11, 2020 Newspaper, magazine
Dislocation and oxygen-release driven delithiation in Li2MnO3

Nature Research Device & Materials Engineering Community, Sep 10, 2020 Internet
次世代リチウムイオン電池正極材料の劣化メカニズム、原子レベルで解明東大

財経新聞社, 財経新聞, Sep 10, 2020 Newspaper, magazine
東大、高容量リチウムイオン電池の正極材料「Li2MnO3」の充電過程を原子レベルで解明

日本経済新聞社, 日本経済新聞, Sep 8, 2020 Newspaper, magazine
ハニカム格子イリジウム酸化物の人工超格子合成、東北大金研・東大

科学新聞社, 科学新聞, 2020年09月04日発売号 3面, Sep 4, 2020 Newspaper, magazine
ハニカム格子イリジウム酸化物の合成に成功

EE Times Japan, Aug 18, 2020 Internet

Profile Information

Research Interests

Research Areas

Research History

Education

Major Papers

Awards

Misc.

Presentations

Teaching Experience

Professional Memberships

Research Projects

Industrial Property Rights

Media Coverage

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