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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  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-4662-0996 (unconfirmed)
ABE, Takeshi
MIYAZAKI, Kohei  KAKEN_id  orcid https://orcid.org/0000-0001-5177-3570 (unconfirmed)
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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