• 文献标题:   Electrochemical studies of few-layered graphene as an anode material for Li ion batteries
  • 文献类型:   Article
  • 作  者:   PETNIKOTA S, ROTTE NK, SRIKANTH VVSS, KOTA BSR, REDDY MV, LOH KP, CHOWDARI BVR
  • 作者关键词:   graphene, anode, li ion battery, surface area, reversible capacity
  • 出版物名称:   JOURNAL OF SOLID STATE ELECTROCHEMISTRY
  • ISSN:   1432-8488 EI 1433-0768
  • 通讯作者地址:   Univ Hyderabad
  • 被引频次:   51
  • DOI:   10.1007/s10008-013-2338-2
  • 出版年:   2014

▎ 摘  要

Few-layered graphene (FLG) with specific surface area of only similar to 8.2 m(2) g(-1) was synthesized from graphene oxide (GO) using microwave-assisted exfoliation. GO was prepared using modified Hummers method. Few-layered nature of the exfoliated material was confirmed by electron microscopy, X-ray and electron diffraction, and Raman spectroscopy. Coin cells were fabricated using FLG as an anode and lithium metal as a counter electrode. The cells were tested using cyclic voltammetry and galvanostatic cycling techniques. FLG showed reversible capacity values of similar to 400 and similar to 250 mAh g(-1) at current rates of 0.1 and 1 C, respectively. Columbic efficiency was more than 98 % while cycle to cycle capacity fading was less than 2 %. Maximum discharge or charging capacity was below 0.3 V, a preferable characteristic for achieving ideal anodic behavior.