• 文献标题:   Porous and Low-Crystalline Manganese Silicate Hollow Spheres Wired by Graphene Oxide for High-Performance Lithium and Sodium Storage
  • 文献类型:   Article
  • 作  者:   ZHU JX, TANG CJ, ZHUANG ZC, SHI CW, LI NR, ZHOU L, MAI LQ
  • 作者关键词:   hollow sphere, manganese silicate, graphene oxide, lowcrystalline, lithiumion battery, sodiumion battery
  • 出版物名称:   ACS APPLIED MATERIALS INTERFACES
  • ISSN:   1944-8244 EI 1944-8252
  • 通讯作者地址:   Wuhan Univ Technol
  • 被引频次:   27
  • DOI:   10.1021/acsami.7b06088
  • 出版年:   2017

▎ 摘  要

Herein, a graphene oxide (GO)-wired manganese silicate (MS) hollow sphere (MS/GO) composite is successfully synthesized. Such an architecture possesses multiple advantages in lithium and sodium storage. The hollow MS structure provides a sufficient free space for volume variation accommodation; the porous and low crystalline features facilitate the diffusion of lithium ions; meanwhile, the flexible GO sheets enhance the electronic conductivity of the composite to a certain degree. When applied as the anode material for lithium-ion batteries (LIBs), the as-obtained MS/GO composite exhibits a high reversible capacity, ultrastable cyclability, and good rate performance. Particularly, the MS/GO composite delivers a high capacity of 699 mA h g(-1) even after 1000 cycles at 1 A g(-1). The sodium-storage performance of MS/GO has been studied for the first time, and it delivers a stable capacity of 268 mA h g(-1) after 300 cycles at 0.2 A g(-1). This study suggests that the rational design of metal silicates would render them promising anode materials for LIBs and SIBs.