PPy-encapsulated SnS 2 Nanosheets Stabilized by Defects on a TiO 2 Support as a Durable Anode Material for Lithium-Ion Batteries

Ling Wu, Jie Zheng, Liang Wang, Xunhui Xiong, Yanyan Shao, Gang Wang, Jeng Han Wang, Shengkui Zhong, Minghong Wu

研究成果: 雜誌貢獻文章

120 引文 斯高帕斯(Scopus)

摘要

Nanostructured-alloy-type anodes have received great interest for high-performance lithium-ion batteries (LIBs). However, these anodes experience huge volume fluctuations during repeated lithiation/delithiation and are easily pulverized and subsequently form aggregates. Herein, an efficient method to stabilize alloy-type anodes by creating defects on the surface of the metal oxide support is proposed. As a demonstration, PPy-encapsulated SnS 2 nanosheets supported on defect-rich TiO 2 nanotubes were produced and investigated as an anode material for LIBs. Both experimental results and theoretical calculations demonstrate that defect-rich TiO 2 provides more chemical adhesions to SnS 2 and discharge products, compared to defect-poor TiO 2 , and then effectively stabilizes the electrode structure. As a result, the composite exhibits an unprecedented cycle stability. This work paves the way to designing durable and active nanostructured-alloy-type anodes on oxide supports.

原文英語
頁(從 - 到)811-815
頁數5
期刊Angewandte Chemie - International Edition
58
發行號3
DOIs
出版狀態已發佈 - 2019 一月 14

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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