Electrodeposited Si-O-C as a high-rate performance anode for li-ion capacitor

Seongki Ahn, Toshiyuki Momma*, Wataru Sugimoto, Tetsuya Osaka

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Li-ion capacitors (LIC) which bridge the advantages of supercapacitors and Li-ion batteries have attracted a great deal of attention as a promising energy storage device. In this study, we synthesize the Si-O-C by electrodeposition at low levels of electricity below 2.0 C cm-2 as an anode for LIC. The deposited Si amounts are controlled by charge density during electrodeposition from 0.3 to 1.0 C cm-2. The material and electrochemical characteristics of Si-O-C fabricated at a charge density of 1.0 C cm-2 are studied. The LIC consisting of Si-O-C anode shows an encouraging 95% retention of the initial capacity after 1000 cycles. In addition, the LIC shows a capacity retention ratio of 94% at 140 C-rate. This study reveals the potential prospect to use Si-O-C fabricated by electrodeposition as an anode for a high-rate capability for LIC.

本文言語English
ページ(範囲)A2683-A2688
ジャーナルJournal of the Electrochemical Society
166
12
DOI
出版ステータスPublished - 2019

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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