Li/graphene oxide primary battery system and mechanism

Denis Kornilov, Tirupathi Rao Penki, Andrey Cheglakov, Doron Aurbach

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

A novel type of Li/graphene oxide (Li/GO) battery based on a spontaneous redox reaction between Li metal and GO cathode is introduced as an alternative viable primary battery system. Here, we present an efficient synthesis of GO by the modified Hummers method and focus on a comprehensive study of the reduction mechanism. The Li/GO battery was thoroughly analyzed by various physical and electrochemical methods. GO rich in oxygen-bearing functional groups on graphene layers provided lithium storage sites and delivered a high discharge capacity of around 720 mAh/g at 12 mA/g. Products formed on the surface during reduction were analyzed, and a mechanism was proposed. The results uncovered the reasons underlying the improved electrochemical properties and the contribution of the irreversible capacity of reduced GO in graphene-based composite electrode materials for metal-ion batteries. The Li/GO concept is expected to shed light on the design of similar M/GO batteries based on other active metal anodes (e.g., M = Na, Mg, Al, Zn).

Original languageEnglish
Article number20210002
JournalBattery Energy
Volume1
Issue number2
DOIs
StatePublished - Apr 2022

Bibliographical note

Publisher Copyright:
© 2022 The Authors. Battery Energy published by Xijing University and John Wiley & Sons Australia, Ltd.

Keywords

  • Grafenika
  • electrochemical reduction
  • graphene oxide
  • primary Li batteries
  • reduced graphene oxide

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