Effect of mass balancing on cell performance and electrochemical investigation of sn-ni alloy as anode for li-ion capacitors

Seongki Ahn, Yusuke Nakamura, Hiroki Nara, Toshiyuki Momma*, Wataru Sugimoto, Tetsuya Osaka

*この研究の対応する著者

研究成果査読

1 被引用数 (Scopus)

抄録

Lithium-ion capacitors (LICs) have been attracting research interest over the past years as promising electrochemical energy devices because they show higher energy densities than supercapacitors and higher power densities than batteries. In this study, we synthesized an Sn-Ni alloy by electrodeposition and applied it as an anode for LICs. To optimize the full-cell configuration, we controlled the mass balancing between the loading amounts of active materials in the cathode and anode with different mass ratios of 16:1, 8:1, and 4:1. In addition, the Sn-Ni alloy was investigated using electrochemical impedance spectroscopy under different depth of discharge (DOD) levels. The LICs assembled with a mass ratio of 4:1 between the cathode and anode exhibited good cyclability, rate performance, energy, and power density. This study not only improved the cycle performance of LICs full cell by mass balancing, but also revealed the relationship between the electrochemical characteristics of LICs and DOD levels of the Sn-Ni anode.

本文言語English
論文番号130512
ジャーナルJournal of the Electrochemical Society
167
13
DOI
出版ステータスPublished - 2020 1 10

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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