PUBLICATIONS

論文・著書

光電気化学、全固体電池、光触媒に関する研究成果。

筆頭著者:11報、責任著者(共同含む):7報

2026

2026RESEARCH ARTICLE

Relationship Between Contact Resistance in e–-Conductive Pathways and Mechanical Properties of Active Materials in Microstructurally-Controlled Composite Electrodes for Sulfide All-Solid-State Batteries

K. Watanabe,* Y. Yamada, M. Shishido, Y. Wang, K. Murakami, R. Kanno, M. Hirayama

Batteries & Supercaps 2026, 9, e70485.

2026RESEARCH ARTICLE

3-Dimensional Conductive Pathways in Microstructure-Controlled Composite Cathodes for All-Solid-State Batteries

B. Y. Kang, K. Murakami, K. Watanabe,* Y. Yamada, K. Aso, R. Kanno, M. Hirayama,*

Batteries & Supercaps 2026, 9, e70321.

(selected as a front cover)

2026RESEARCH ARTICLE

Atomic-Resolution Electron Microscopy of Cathode–Electrolyte Interfacial Degradation: Zr-Based Oxide-Coated Regions Preserve Layered LiCoO2

K. Aso, H. Ito, S. Asano, T. Kakeya, K. Yamanaka, K. Taniguchi, Y. Li, K. Watanabe, M. Hirayama,* Y. Oshima,*

Batteries & Supercaps 2026, 9, e70318.

2025

2025RESEARCH ARTICLE

Low-Dose Nanoscale Visualization of Crystal Phases in Epitaxial Cathodes via Cepstral Matching of Scanning Nanobeam Electron Diffraction

K. Aso, T. Kakeya, T. Tsuchida, H. Ito, S. Asano, K. Watanabe, K. Mitsuishi, K. Kimoto, K. Shinoda, T. Masuda,* M. Hirayama,* Y. Oshima,*

Nano Lett., 2025, 25, 15840.

2025RESEARCH ARTICLE

Fabrication and Lithium Intercalation Properties of Graphite-Li10P3S12Br Anode Composites

M. Shishido, S. Takahashi, S. Hori, K. Watanabe, K. Suzuki, R. Kanno, K. Nakamura, T. Abe, H. Hanawa, M. Hirayama,*

Mater. Trans. 2025, 66, 1432.

2025RESEARCH ARTICLE

Structural Observation of Cathode/Sulfide Electrolyte Interface in All-Solid-State Batteries by In Situ Thin-Film X-ray Diffraction

Y. Li, K. Watanabe, K. Ito, K. Shimizu, K. Suzuki, R. Kanno, K. Tamura, M. Hirayama,*

Mater. Trans. 2025, 66, 1493.

2025RESEARCH ARTICLE

Dual modification of LiNbO3 and a lithium-conducting organic polymer at LiCoO2/Li10GeP2S12 interface and lithium intercalation properties in all-solid-state lithium-ion batteries

K. Watanabe, H.-S. Kim, Y. Hasegawa, S. Thompson, T. R. Guimaraes, R. Kanno, P. B. Zetterlund, M. Hirayama,*

RSC Appl. Interfaces 2025, 2, 1821.

2025RESEARCH ARTICLE

Standard Li+/Li redox potential at the Li/amorphous-Li3PO4 interface probed by photoelectron spectroscopy for all-solid-state (photo)electrochemical systems

K. Watanabe,* S. Kawai, K. Shimizu, K. Suzuki, R. Kanno, M. Hirayama

Appl. Phys. Lett., 2025, 127, 083906.

2025RESEARCH ARTICLE

Self-Closing of Cracks Generated in Microstructure-Controlled 400 µm-Thick Composite Cathodes for All-Solid-State Batteries: Observed by In Situ Scanning Electron Microscopy with Energy-Dispersive X-Ray Spectroscopy

K. Watanabe,* H.-S. Kim, K. Hikima, N. Matsui, K. Suzuki, H. Muto, A. Matsuda, R. Kanno, M. Hirayama,*

Batteries & Supercaps 2025, 8, e202500119.

(selected as a front cover)

2025RESEARCH ARTICLE

Sn vs. Ge: Effects of Elastic and Plastic Deformation of LGPS-type Solid Electrolytes on Charge-discharge Properties of Composite Cathodes for All-solid-state Batteries

K. Watanabe,* H. Nakayama, H.-S. Kim, K. Hikima, N. Matsui, K. Suzuki, S. Obokata, H. Muto, A. Matsuda, R. Kanno, M. Hirayama,*

Electrochemistry, 2025, 93, 063019.

2025RESEARCH ARTICLE

Encapsulation of LiCoO2 particles with lithium containing polymer for solid state lithium-ion battery cathodes

S. W. Thompson, T. R. Guimarães, K. Watanabe, M. Hirayama,* P. B. Zetterlund*

Polymer, 2025, 324, 128255.

2025RESEARCH ARTICLE

A trade-off between migration and association energies for hydride-ion conductivity in the SrLiH3–CaLiH3–NaLiH2 system

T. Hirose, N. Matsui,* K. Watanabe, T. Saito, K. Mori, K. Suzuki, M. Hirayama,* R. Kanno*

Dalton Trans., 2025, 54, 4180.

2025RESEARCH ARTICLE

Simultaneous Exploration of Candidates for Electrode and Electrolyte Materials for All-Solid-State Batteries Using Predicted Rating from a Recommender System

T. Nakayama, K. Watanabe, Y. Iwamizu, K. Suzuki,* N. Matsui, A. Seko, I. Tanaka, R. Kanno, M. Hirayama

ACS Appl. Energy Mater., 2025, 8, 2260.

(selected as a supplementary cover)

2025RESEARCH ARTICLE

Unequal {110} Facets: The Potential Role of Intraparticle Heterogeneity and Facet Termination in Photoelectrochemical Activity of Single BiVO4 Particles

A. Banik, H. Maekawa, J. Fajardo, B. Zutter, F. M. Alcorn, S. Kumar, K. Watanabe, A. Kudo, N.-H. Ge,* A. A. Talin,* J. B. Sambur*

ACS Nano, 2025, 19, 6250.

2024

2024RESEARCH ARTICLE

Demonstration of scalable water splitting into H2 and O2 by a flow-type photocatalysis-electrolysis hybrid system using a highly stable photocatalyst

Y. Miseki,* M. Tamano, K. Watanabe, K. Sayama*

ACS Appl. Mater. Interface, 2024, 16, 60219.

2024RESEARCH ARTICLE

Revealing the Role of Redox Reaction Selectivity and Mass Transfer in Current–Voltage Predictions for Ensembles of Photocatalysts

L. Barrera, B. W. Layne, Z. Chen, K. Watanabe, A. Kudo, D. V. Esposito, S. Ardo, R. B. Chandran*

Energy Environ. Sci., 2024, 17, 8254.

2024RESEARCH ARTICLE

Water splitting over transition metal-doped SrTiO3 photocatalysts with response to visible light up to 660 nm

K. Kaiya, Y. Ueki, H. Kawamoto, K. Watanabe, S. Yoshino, Y. Yamaguchi, A. Kudo*

Chem. Sci., 2024, 15, 16025.

(selected as an inside front cover)

2024RESEARCH ARTICLE

A composite cathode with a three-dimensional ion/electron-conducting structure for all-solid-state lithium–sulfur batteries

P. Jiang, H. Zhou, S. Song, K. Suzuki, K. Watanabe, Y. Yamaguchi, N. Matsui, S. Hori, R. Kanno, M. Hirayama*

Commun. Mater., 2024, 5, 105.

2024RESEARCH ARTICLE

Mechanical Properties of Li10.35Ge1.35P1.65S12 with Different Particle Sizes

H. Kim, K. Hikima, K. Watanabe, N. Matsui, K. Suzuki, S. Obokata, H. Muto, A. Matsuda, R. Kanno, and M. Hirayama*

Mater. Trans., 2024, 65, 861.

2024RESEARCH ARTICLE

Degradation of a lithium cobalt oxide cathode under high voltage operation at an interface with an oxide solid electrolyte

K. Ito, K. Tamura, K. Shimizu, N. L. Yamada, K. Watanabe, K. Suzuki, M. Hirayama*

RSC Appl. Interfaces, 2024, 1, 790.

2024RESEARCH ARTICLE

Fabrication and High-temperature Electrochemical Stability of LiFePO4 Cathode/Li3PO4 Electrolyte Interface

D. Kang, K. Ito, K. Shimizu, K. Watanabe, N. Matsui, K. Suzuki, R. Kanno, M. Hirayama*

Electrochemistry, 2024, 92, 037008.

2024RESEARCH ARTICLE

Intercalative and non-intercalative photo-recharge using all-solid-state cells for solar energy conversion and storage

M. Yoshimoto, K. Tamura, K. Watanabe,* K. Shimizu, T. Kobayashi, H. Tsurita, Y. Horisawa, K. Suzuki, R. Kanno, M. Hirayama*

Sustainable Energy Fuels, 2024, 8, 1236–1244.

(selected as an inside front cover)

2024RESEARCH ARTICLE

Interfacial structure changes between amorphous silicon anode/liquid electrolyte using a highly dense and flat model electrode

S. Asano, J. Hata, K. Watanabe, N. Matsui, K. Suzuki, R. Kanno, M. Hirayama*

J. Solid State Electrochem., 2024, 28, 4491–4501.

2024RESEARCH ARTICLE

Formation Processes of a Solid Electrolyte Interphase at a Silicon/Sulfide Electrolyte Interface in a Model All-Solid-State Li-Ion Battery

S. Asano, J. Hata, K. Watanabe, K. Shimizu, N. Matsui, N. L. Yamada, K. Suzuki, R. Kanno, M. Hirayama*

ACS Appl. Mater. Interfaces, 2024, 16, 7189–7199.

2024RESEARCH ARTICLE

Electrical Double Layer Formation at Intercalation Cathode–Organic Electrolyte Interfaces During Initial Lithium-Ion Battery Reactions

J. Nakayama, H. Zhou, J. Izumi, K. Watanabe, K. Suzuki, F. Nemoto, N. L. Yamada, R. Kanno, M. Hirayama*

Adv. Mater. Interfaces, 2024, 11, 2300780.

(selected as a front cover)

2024RESEARCH ARTICLE

Stable Photoelectrochemical Reactions at Solid/Solid Interfaces toward Solar Energy Conversion and Storage

K. Watanabe,* Y. Horisawa, M. Yoshimoto, K. Tamura, K. Suzuki, R. Kanno, M. Hirayama*

Nano Lett., 2024, 24, 1916–1922.

(selected as a supplementary cover)

2023

2023RESEARCH ARTICLE

Fast Lithium Intercalation Mechanism on Surface‐Modified Cathodes for Lithium‐Ion Batteries

H. Zhou, J. Izumi, S. Asano, K. Ito, K. Watanabe, K. Suzuki, F. Nemoto, N. L. Yamada, K. Aso, Y. Oshima, R. Kanno, M. Hirayama*

Adv. Energy Mater., 2023, 2302402.

(selected as a back cover)

2023RESEARCH ARTICLE

Crack Suppression by Downsizing Sulfide-Electrolyte Particles for High-Current-Density Operation of Metal/Alloy Anodes

H. S. Kim, K. Watanabe, N. Matsui, K. Suzuki, R. Kanno, M. Hirayama*

Batteries Supercaps, 2023, 6, e202300306.

2023RESEARCH ARTICLE

Microstructure Control of LiCoO2-Li10GeP2S12 Composite Cathodes by Adjusting the Particle Size Distribution for the Enhancement of All-Solid-State Batteries

Y. Yamada, K. Watanabe, H. S. Kim, K. Suzuki, S. Hori, R. Kanno, M. Hirayama*

Batteries Supercaps, 2023, 6, e202300261.

(selected as a front cover, Very Important Paper (VIP), Special Collection “Solid State Batteries”)

2023RESEARCH ARTICLE

Electrochemical and mechanical properties and chemical stability of Li10GeP2S12/Al2O3 composite electrolytes

T. Yabuzaki, M. Sato, H. Kim, K. Watanabe, N. Matsui, K. Suzuki, S. Hori, K. Hikima, S. Obokata, H. Muto, A. Matsuda, R. Kanno M. Hirayama*

J. Ceram. Soc. Jpn., 2023, 131, 675–684.

2023RESEARCH ARTICLE

Direct tracking of reaction distribution in an all-solid-state battery using operando scanning electron microscopy with energy dispersive X-ray spectroscopy

T. Noda, H. Kim, K. Watanabe, K. Suzuki, N. Matsui, R. Kanno M. Hirayama*

J. Ceram. Soc. Jpn., 2023, 131, 651–658.

2023RESEARCH ARTICLE

Single-Particle Measurements Reveal the Origin of Low Solar-to-Hydrogen Efficiency of Rh-Doped SrTiO3 Photocatalysts

B. Zutter, Z. Chen, L. Barrera, W. Gaieck, A. S. Lapp, K. Watanabe, A. Kudo, D. V. Esposito, R. Bala Chandran, S. Ardo, A. A. Talin*

ACS Nano, 2023, 17, 9405–9414.

2022

2022RESEARCH ARTICLE

Cs,Rh-codoped WO3 with a core-shell structure responsive up to 600 nm as an O2-evolving photocatalyst for Z-schematic water splitting

K. Watanabe, Y. Miseki,* K. Sayama*

Sustainable Energy Fuels, 2022, 6, 3591–3598.

2021

2021RESEARCH ARTICLE

Highly crystalline Na0.5Bi0.5TiO3 of a photocatalyst valence-band-controlled with Bi(III) for solar water splitting

K. Watanabe, Y. Iikubo, Y. Yamaguchi, A. Kudo*

Chem. Commun., 2021, 57, 323–326.

(selected as an outside back cover)

2020

2020RESEARCH ARTICLE

New Visible-Light-Driven H2- and O2-Evolving Photocatalysts Developed by Ag(I) and Cu(I) Ion Exchange of Various Layered and Tunneling Metal Oxides Using Molten Salts Treatments

K. Watanabe, K. Iwashina, A. Iwase, S. Nozawa, S. Adachi, A. Kudo*

Chem. Mater., 2020, 32, 10524–10537.

(selected as a supplementary cover)

2020RESEARCH ARTICLE

Solar water splitting over Rh0.5Cr1.5O3-loaded AgTaO3 of a valence-band-controlled metal oxide photocatalyst

K. Watanabe, A. Iwase, A. Kudo*

Chem. Sci., 2020, 11, 2330–2334.

(selected as an outside front cover, a 2020 Chemical Science HOT Article Collection, and a 2020 ChemSci Pick of the Week Collection)

2019

2019RESEARCH ARTICLE

Effects of Coapplication of Rh-Doping and Ag-Substitution on the Band Structure of Li2TiO3 and the Photocatalytic Property

K. Watanabe, A. Iwase, S. Nozawa, S. Adachi, A. Kudo*

ACS Sustainable Chem. Eng., 2019, 7, 9881–9887.

(selected as a supplementary cover)

BOOKS & OTHER WRITINGS

著書・解説等

  1. K. Watanabe, M. Hirayama,

    “Photo-Rechargeable All-Solid-State Batteries Based on Photoelectrochemistry and Solid-State Ionics”

    Chapter 4 in Solar Capacitors and Batteries, John Wiley & Sons, Ltd, 2026, 83–104.

  2. 渡邊健太,平山雅章

    “全固体電池とイオン伝導体”,電気計算,2024, 4, 27–32.

  3. 渡邊健太

    ““正しい”光触媒によるCO2還元 条件を見極めよう”,化学(CHEMISTRY),2023, 78, 57-58.

  4. 渡邊健太

    “人工光合成:光触媒を用いたソーラー水分解によるグリーン水素製造”,

    東京理科大学 科学フォーラム(Science Forum), 2023, 40, 54–55.

  5. 渡邊健太

    “魔の川”,カーボン・エネルギーコントロール社会協議会(CanApple) ニュースレター, 2022, 第248号.

  6. 渡邊健太

    “ソーラー水分解を目指した価電子帯制御型金属酸化物光触媒の開発”

    触媒(Catalysts and Catalysis), 2022, 64, 263–266.

  7. 渡邊健太,山口友一,工藤昭彦

    “Ag(I)とBi(III)の相乗効果によって価電子帯上端が引き上げられたAgTaO3-Na0.5Bi0.5TiO3固溶体光触媒を用いた水分解”

    触媒(Catalysts and Catalysis), 2020, 62, 60–62.

PATENTS

特許

  1. 渡邊健太,草間仁,佐山和弘,三石雄悟

    “光触媒およびその製造方法,ならびに光触媒を用いた酸素製造方法および水素製造方法”

    特開2024-010721,公開日2024年1月25日.

  2. 工藤昭彦,海谷恭平,山口友一,吉野隼矢,渡邊健太,新城亮

    “光触媒並びにこれを用いた水素及び酸素の製造方法”

    特開2023-076230, 公開日2023年6月1日

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