• 文献标题:   Composite Li metal anode with vertical graphene host for high performance Li-S batteries
  • 文献类型:   Article
  • 作  者:   ZHANG YJ, LIU SF, WANG XL, ZHONG Y, XIA XH, WU JB, TU JP
  • 作者关键词:   lithium metal anode, vertical graphene array, electrodeposition, meltinfusion
  • 出版物名称:   JOURNAL OF POWER SOURCES
  • ISSN:   0378-7753 EI 1873-2755
  • 通讯作者地址:   Zhejiang Univ
  • 被引频次:   13
  • DOI:   10.1016/j.jpowsour.2017.10.057
  • 出版年:   2018

▎ 摘  要

Efficient and stable operation of a lithium metal anode has become the enabling factor for next-generation high energy density storage system. Here, vertical graphene (VG) arrays are used as the scaffold structure for high performance Li metal batteries. The melt infusion method is employed to encapsulate Li inside the VG scaffold structure, and the lithiophilic Si layer is coated onto the array surface by magnetron sputtering to assist this melt infusion process. The porous scaffold structure can control the volume expansion and inhibit the formation of dendritic lithium significantly, leading to the excellent electrochemical performance of the Li composite anode. In addition, the Li-S full batteries with the composite anode display enhanced cycling reversibility.