• 文献标题:   Tuning Pseudocapacitance via C-S Bonding in WS2 Nanorods Anchored on N,S Codoped Graphene for High-Power Lithium Batteries
  • 文献类型:   Article
  • 作  者:   SONG Y, BAI S, ZHU L, ZHAO MY, HAN DW, JIANG SH, ZHOU YN
  • 作者关键词:   ws2, lithiumion batterie, cs bonding graphene, pseudocapacitance
  • 出版物名称:   ACS APPLIED MATERIALS INTERFACES
  • ISSN:   1944-8244 EI 1944-8252
  • 通讯作者地址:   Fudan Univ
  • 被引频次:   13
  • DOI:   10.1021/acsami.8b02506
  • 出版年:   2018

▎ 摘  要

Pseudocapacitance plays an important role in high-power lithium-ion batteries (LIBs). However, it is still lack of effective methods to tailor the pseudocapacitance contribution in electrode materials for LIBs. Herein, pseudocapacitance tuned by the strength of C-S bonding has been rendered in WS2 nanorods anchored on the N,S codoped three-dimensional graphene hybrid (WS2@N,S-3DG) for the first time. The pseudocapacitive contributions in the charge storage can be enhanced effectively with the increased strength of C-S bonding. As expected, the enhanced extrinsic pseudocapacitance makes WS2@N,S-3DG a fascinating electrode material for high-power LIBs, with a high reversible capacity of 509 mA h g(-1) over 500 cycles at a current density as high as 2 A g(-1). These encouraging results of pseudocapacitance opportunities for designing advanced electrode materials.