• 文献标题:   Hierarchically structured reduced graphene oxide/WO3 frameworks for an application into lithium ion battery anodes
  • 文献类型:   Article
  • 作  者:   PARK SK, LEE HJ, LEE MH, PARK HS
  • 作者关键词:   nanostructure, wo3, graphene, nanocomposite, lithium ion battery
  • 出版物名称:   CHEMICAL ENGINEERING JOURNAL
  • ISSN:   1385-8947 EI 1873-3212
  • 通讯作者地址:   Sungkyunkwan Univ SKKU
  • 被引频次:   33
  • DOI:   10.1016/j.cej.2015.07.009
  • 出版年:   2015

▎ 摘  要

In this study, we demonstrate the synthesis of WO3 particle deposited on three-dimensional (3D) macroporous reduced graphene oxide (RGO) frameworks for lithium ion battery anodes. WO3 particles are uniformly deposited on the surface of RGO sheets and the resulting RGO/WO3 frameworks reveal hierarchically structured, 3D networks assembled during a hydrothermal process. The hierarchically architectured RGO/WO3 hybrid frameworks achieve a discharge capacity of 487 mA h g(-1) even after 100 cycles at 150 mA g(-1) and reversible capacity as high as 356 mA h g(-1) at a high rate of 300 mA g(-1). Such the improved battery performances of RGO/WO3 frameworks are attributed to uniform dispersion of discrete WO3 particles and 3D macroporous continuity, which provides a high accessible area, easy accessibility to redox sites, short ion diffusion length, and rapid charge and mass transport. (C) 2015 Elsevier B.V. All rights reserved.