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

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)811-815
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number3
DOIs
Publication statusPublished - 2019 Jan 14

Fingerprint

Nanosheets
Lithium
Anodes
Electrodes
Ions
Defects
Oxides
Nanotubes
Demonstrations
Adhesion
Metals
Lithium-ion batteries
Composite materials

Keywords

  • SnS anode
  • TiO support
  • cycle stability
  • lithium-ion battery
  • oxygen defect

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

PPy-encapsulated SnS 2 Nanosheets Stabilized by Defects on a TiO 2 Support as a Durable Anode Material for Lithium-Ion Batteries . / Wu, Ling; Zheng, Jie; Wang, Liang; Xiong, Xunhui; Shao, Yanyan; Wang, Gang; Wang, Jeng Han; Zhong, Shengkui; Wu, Minghong.

In: Angewandte Chemie - International Edition, Vol. 58, No. 3, 14.01.2019, p. 811-815.

Research output: Contribution to journalArticle

Wu, Ling ; Zheng, Jie ; Wang, Liang ; Xiong, Xunhui ; Shao, Yanyan ; Wang, Gang ; Wang, Jeng Han ; Zhong, Shengkui ; Wu, Minghong. / PPy-encapsulated SnS 2 Nanosheets Stabilized by Defects on a TiO 2 Support as a Durable Anode Material for Lithium-Ion Batteries In: Angewandte Chemie - International Edition. 2019 ; Vol. 58, No. 3. pp. 811-815.
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