Direct synthesis of lithium-intercalated graphene for electrochemical energy storage application.

Kumar, Ashavani; Reddy, Arava Leela Mohana; Mukherjee, Arnab; Dubey, Madan; Zhan, Xiaobo; Singh, Neelam; Ci, Lijie; Billups, W Edward et al. · ACS Nano · 2011

basic_science · Level V

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Abstract

A novel approach for bulk synthesis of lithium-intercalated graphene sheets through the reduction of exfoliated graphene oxide in liquid ammonia and lithium metal is reported. It is demonstrated here that as-synthesized lithiated graphite oxide sheets (Li-RGO) can be directly used as an electrode material in lithium batteries. The electrochemical studies on Li-RGO electrodes show a significant enhancement in the specific capacity of the lithium battery over commercially available graphite electrodes. Partial intercalation of lithium ions in between graphene layers makes this material a good candidate for electrochemical energy storage applications.