Akichika Kumatani
Tohoku University
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Publication
Featured researches published by Akichika Kumatani.
Japanese Journal of Applied Physics | 2014
Akichika Kumatani; Susumu Shiraki; Yoshitaka Takagi; Tohru Suzuki; Takeo Ohsawa; Xiang Gao; Yuichi Ikuhara; Taro Hitosugi
We fabricated Li4Ti5O12(111) epitaxial thin films on α-Al2O3(0001) substrates by RF magnetron sputtering. Thin films of amorphous Li4Ti5O12 were deposited at room temperature, and then the films were annealed at high temperatures for the formation of epitaxial thin films. Furthermore, we investigated the effect of niobium (Nb) incorporation into Li4Ti5O12. The Nb-incorporated Li4Ti5O12 thin films showed an improvement in crystallinity with a narrower rocking curve full width at half-maximum of 0.36° for the Li4Ti5O12(111) peak. Further, the resistivity of the Nb-incorporated film dropped three orders of magnitude on the Nb incorporation.
Journal of Power Sources | 2014
Susumu Shiraki; Hideki Oki; Yoshitaka Takagi; Tohru Suzuki; Akichika Kumatani; Ryota Shimizu; Masakazu Haruta; Takeo Ohsawa; Yukio Sato; Yuichi Ikuhara; Taro Hitosugi
Acta Materialia | 2013
Shijian Zheng; Craig A. J. Fisher; Taro Hitosugi; Akichika Kumatani; Susumu Shiraki; Yumi H. Ikuhara; Akihide Kuwabara; Hiroki Moriwake; Hideki Oki; Yuichi Ikuhara
Electrochemistry | 2014
Yasufumi Takahashi; Komachi Ito; Xiongwei Wang; Yoshiharu Matsumae; Hirokazu Komaki; Akichika Kumatani; Kosuke Ino; Hitoshi Shiku; Tomokazu Matsue
Solid State Ionics | 2016
Masakazu Haruta; Susumu Shiraki; Takeo Ohsawa; Tohru Suzuki; Akichika Kumatani; Yoshitaka Takagi; Ryota Shimizu; Taro Hitosugi
Physical Chemistry Chemical Physics | 2017
Yasufumi Takahashi; Hiroki Ida; Yoshiharu Matsumae; Hirokazu Komaki; Yuanshu Zhou; Akichika Kumatani; Makoto Kanzaki; Hitoshi Shiku; Tomokazu Matsue
Surface and Interface Analysis | 2018
Akichika Kumatani; Yasufumi Takahashi; Chiho Miura; Hiroki Ida; Hirotaka Inomata; Hitoshi Shiku; Hirokazu Munakata; Kiyoshi Kanamura; Tomokazu Matsue
Electrochimica Acta | 2017
Li Ma; Han Zhou; Yao Sun; Shuli Xin; Chunhui Xiao; Akichika Kumatani; Tomokazu Matsue; Penghui Zhang; Shujiang Ding; Fei Li
PRiME 2016/230th ECS Meeting (October 2-7, 2016) | 2016
Akichika Kumatani; Tetsuya Watanabe; Takahashi Yasufumi; Kei Kubota; Hiroki Ida; Hitoshi Shiku; Shinichi Komaba; Tomokazu Matsue
228th ECS Meeting (October 11-15, 2015) | 2015
Akichika Kumatani; Yasufumi Takahashi; Hirotaka Inomata; Tetsuya Watanabe; Kuniko Yamamoto; Masakazu Haruta; Susumu Shiraki; Hitoshi Shiku; Taro Hitosugi; Tomokazu Matsue
