Graphene@Nanoporous Nickel Cathode for Li−O2 Batteries

Xianwei Guo, Jiuhui Han, Pan Liu, Yoshikazu Ito, Akihiko Hirata, Mingwei Chen

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Li−O2 batteries are a promising electrochemical energy-storage system with a sufficient energy density for all electric vehicles, with a one-charge driving distance comparable to conventional petrol cars. However, the practical implementations of Li−O2 batteries face many scientific and technological challenges. Among these is the development of high-performance cathode materials that can provide high capacity, low charge/discharge overpotentials and stable cycling stability. Here, we report a nanoporous Ni cathode covered by N-doped graphene and self-grown catalyst for rechargeable Li−O2 batteries. The novel hybrid cathode shows relatively low charge/discharge overpotentials, high volumetric capacity and long cycling lifetime, which may pave a new way for practical implementation of economic nanoporous metals as binder-free cathodes for high-performance Li−O2 batteries.

Original languageEnglish
Pages (from-to)176-181
Number of pages6
JournalChemNanoMat
Volume2
Issue number3
DOIs
Publication statusPublished - 2016 Jan 1
Externally publishedYes

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Keywords

  • Li−O battery
  • nanoporous graphene
  • nanoporous metal
  • nitrogen-doped graphene
  • volumetric capacity

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Biomaterials
  • Materials Chemistry

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