YOKOYAMA Koji

ヨコヤマコウジ | YOKOYAMA Koji

Affiliation and department：

Research keywords (4)：ペロブスカイト光学材料 , Metal / Alloy nanomaterials , Elecrtrochemistry , Carbon nanomaterials

Research theme for competitive and other funds (7)：

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Papers (12)：

Koji Yokoyama, Takahisa Omata, Shun Yokoyama, Hideyuki Takahashi. Ambient Aqueous-Phase Synthesis of Highly Stable Methylammonium Tin Iodide Perovskites Using Alkali Iodides and Ascorbic Acid. ACS Applied Energy Materials. 2023
Xufeng Rao, Jiaying Yan, Koji Yokoyama, Xiaolin Shao, Chihiro Inoue, Mei-fang Chien, Yuyu Liu. A porous Co3O4-carbon paper electrode enabling nearly 100% electrocatalytic reduction of nitrate to ammonia. Materials Reports: Energy. 2023
Hiromi Koga, Shun Yokoyama, Kenichi Motomiya, Koji Yokoyama, Hideyuki Takahashi. Adhesive Cu-Ag core-shell nanowires on polymer-coated glass substrates for fabricating transparent conductive films with durability against spin coating. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2023. 660. 130804-130804
Koji Yokoyama, Issei Mamiya, Hiromu Morita, Yoshinori Sato, Kenta Sato, Tetsuo Nishida, Yoshinori Sato. Controlled introduction of defects into single-walled carbon nanotubes via a fluorination-defluorination strategy using xenon difluoride and their alkaline oxygen reduction reaction catalytic activity. Journal of Colloid and Interface Science. 2022. 627. 168-179
Koji Yokoyama, Yoshinori Sato, Masashi Yamamoto, Tetsuo Nishida, Takashi Itoh, Kenichi Motomiya, Yoshinori Sato. Functionalization of primary amine groups to single-walled carbon nanotubes by reacting fluorinated SWCNTs with ammonia gas at a low temperature. Carbon. 2021. 172. 360-371

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Patents (2)：

Lectures and oral presentations (39)：

Fabrication of Cu-Ag core-shell nanowire films as transparent conductive films based on environment-friendly manner for ITO-free perovskite solar cells
(12th International Colloids Conference 2023)
太陽電池応用に向けたAg-In二重ペロブスカイトのCu添加によるバンドギャップの最適制御
(令和5年度資源・素材学会東北支部春季大会 2023)
Synthesis and morphological control of Fe metal particles by controlling the metal complex condition in basic solution
(2023 ECS Spring Meeting 2023)
二重ペロブスカイトの水溶液中合成を目的とした銅・インジウム-ハロゲン化物錯体構造の最適設計
(資源・素材2022 2022)
塩基性水溶液中での単分散鉄微粒子の高収率合成法の開発
(資源・素材2022 2022)

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Education (3)：

2016 - 2019 Tohoku University Graduate School of Environmental Studies Department of Environmental Studies for Advanced Society
2014 - 2016 Tohoku University Graduate School of Environmental Studies
2010 - 2014 Tohoku University Faculty of Engineering Department of Mechanical and Aerospace Engineering

Professional career (1)：

Work history (3)：

2021/04 - 現在 Tohoku University Graduate School of Environmental Studies Assistant Professor
2019/04 - 2021/03 Panasonic Corporation
2017/04 - 2019/03 Japan Society for the Promotion of Science

Awards (15)：

2023/06 - 資源・素材学会東北支部令和5年度資源・素材学会東北支部春季大会優秀発表賞(銀賞) 太陽電池応用に向けたAg-In二重ペロブスカイトのCu添加によるバンドギャップの最適制御
2022/09 - 第73回コロイドおよび界面化学討論会ポスター賞アスコルビン酸を用いた高安定なヨウ化スズペロブスカイト光吸収材料の大気中・水中合成法の開拓
2022/09 - 資源・素材学会資源・素材2022若手ポスター発表賞塩基性水溶液中での単分散鉄微粒子の高収率合成法の開発
2019/03 - 第55回フラーレン・ナノチューブ・グラフェン総合シンポジウム若手奨励賞
2018/12 - 第45回炭素材料学会年会ポスター賞

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