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タイトル: | Black Phosphorus-Graphite Material Composites with a Low Activation Energy of Interfacial Conductivity |
著者: | JU, Yuhang NASARA, Ralph Nicolai LEE, Changhee MIYAHARA, Yuto ![]() ![]() ![]() ABE, Takeshi MIYAZAKI, Kohei ![]() ![]() |
著者名の別形: | 宮原, 雄人 安部, 武志 宮崎, 晃平 |
キーワード: | Black Phosphorus Activation Energy Lithium Charge Transfer Solvent De-solvation Process |
発行日: | Feb-2022 |
出版者: | The Electrochemical Society of Japan |
誌名: | Electrochemistry |
巻: | 90 |
号: | 2 |
論文番号: | 027007 |
抄録: | The reaction kinetics of electrochemical lithiation/delithiation in a composite consisting of black phosphorus and cup-stacked carbon nanotube (BP-CSCNT) were investigated. Two semicircles were observed in Nyquist plots at the high and low frequency regions, which were attributed to the resistance of lithium-ion transport through the surface film and the resistance of the alloying/dealloying reaction (charge-transfer resistance), respectively. The activation energy using the charge transfer reaction was evaluated from the temperature-dependence of the interfacial conductivity. Even with the use of ethylene carbonate-based and propylene carbonate electrolytes, the activation energy was calculated to be 25–26 kJ mol⁻¹, which is much smaller than that obtained with graphite electrodes and cathode materials. These results indicate that the ionic charge transfer process in BP-CSCNT composite electrodes is not coupled with the desolvation process and suggest that the charge transfer in BP-CSCNT is exceptionally fast compared to that in other insertion materials. |
著作権等: | © The Author(s) 2021. Published by ECSJ. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY), which permits unrestricted reuse of the work in any medium provided the original work is properly cited. |
URI: | http://hdl.handle.net/2433/277041 |
DOI(出版社版): | 10.5796/electrochemistry.21-00132 |
出現コレクション: | 学術雑誌掲載論文等 |

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