On the Road to the Frontiers of Lithium-Ion Batteries: A Review and Outlook of Graphene Anodes

Jingxuan Bi, Zhuzhu Du, Jinmeng Sun, Yuhang Liu, Ke Wang, Hongfang Du, Wei Ai, Wei Huang

Research output: Contribution to journalReview articlepeer-review

170 Scopus citations

Abstract

Graphene has long been recognized as a potential anode for next-generation lithium-ion batteries (LIBs). The past decade has witnessed the rapid advancement of graphene anodes, and considerable breakthroughs are achieved so far. In this review, the aim is to provide a research roadmap of graphene anodes toward practical LIBs. The Li storage mechanism of graphene is started with and then the approaches to improve its electrochemical performance are comprehensively summarized. First, morphologically engineered graphene anodes with porous, spheric, ribboned, defective and holey structures display improved capacity and rate performance owing to their highly accessible surface area, interconnected diffusion channels, and sufficient active sites. Surface-modified graphene anodes with less aggregation, fast electrons/ions transportation, and optimal solid electrolyte interphase are discussed, demonstrating the close connection between the surface structure and electrochemical activity of graphene. Second, graphene derivatives anodes prepared by heteroatom doping and covalent functionalization are outlined, which show great advantages in boosting the Li storage performances because of the additionally introduced defect/active sites for further Li accommodation. Furthermore, binder-free and free-standing graphene electrodes are presented, exhibiting great prospects for high-energy-density and flexible LIBs. Finally, the remaining challenges and future opportunities of practically available graphene anodes for advanced LIBs are highlighted.

Original languageEnglish
Article number2210734
JournalAdvanced Materials
Volume35
Issue number16
DOIs
StatePublished - 20 Apr 2023

Keywords

  • anodes
  • doped graphene
  • functionalized graphene
  • graphene
  • lithium-ion batteries

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