PPy‐encapsulated SnS2 Nanosheets Stabilized by Defects on a TiO2 Support as a Durable Anode Material for Lithium‐Ion Batteries

Angewandte Chemie - International Edition - Tập 58 Số 3 - Trang 811-815 - 2019
Ling Wu1,2, Jie Zheng3,2, Liang Wang4,2, Xunhui Xiong3, Yanyan Shao5, Gang Wang3, Jeng‐Han Wang5, Shengkui Zhong1, Minghong Wu4
1School of Iron and Steel, Soochow University, Suzhou, 215021 P. R. China
2these authors contributed equally to this work
3Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
4Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China.
5Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan

Tóm tắt

AbstractNanostructured‐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 SnS2 nanosheets supported on defect‐rich TiO2 nanotubes were produced and investigated as an anode material for LIBs. Both experimental results and theoretical calculations demonstrate that defect‐rich TiO2 provides more chemical adhesions to SnS2 and discharge products, compared to defect‐poor TiO2, 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.

Từ khóa


Tài liệu tham khảo

10.1002/anie.201710555

10.1002/ange.201710555

10.1002/anie.201201429

10.1002/ange.201201429

10.1002/anie.201800363

10.1002/ange.201800363

10.1038/35035045

10.1038/nenergy.2016.71

10.1002/anie.201711366

10.1002/ange.201711366

10.1039/C4CS00442F

10.1002/anie.201303971

10.1002/ange.201303971

10.1039/C5EE03262H

10.1039/C7EE01628J

10.1002/aenm.201700174

10.1021/nn501284q

10.1002/adma.201300071

10.1021/acsnano.6b05653

10.1021/nn501308m

10.1002/adma.201705369

10.1039/C8EE00419F

10.1038/ncomms13065

10.1002/adma.201505918

10.1021/acsami.5b01208

10.1021/nl300173j

10.1016/j.jpowsour.2007.02.040

10.1039/c3ta11269a

10.1039/C3EE42944J

10.1039/c2ra00002d

10.1038/nature06964

Thông tin
Thông tin xuất bản

Angewandte Chemie - International Edition

Tập 58 Số 3

811-815

Thông tin tác giả