Gadolinium doped ceria on graphene cathode with enhanced cycle stability for non-aqueous lithium-oxygen batteries

Yuexing Jiang, Lu Zou, Junfang Cheng, Yizhen Huang, Ziling Wang, Bo Chi, Jian Pu, Jian Li

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Cycle stability is crucial for non-aqueous lithium-oxygen batteries, which is dependent with the cathode performance. In this work, gadolinium doped CeO2 nanoparticles are prepared through one-pot hydrothermal process on reduced graphene oxide, and applied as cathode catalyst for non-aqueous lithium-oxygen batteries. With the catalytic effect of Ce0.8Gd0.2O2-δ nanoparticles on Li2O2 formation and decomposition, the battery delivers both low discharge and charge overpotential about 0.18 V and 0.69 V at the current density of 400 mA g−1. Moreover, cycle stability is enhanced for over 100 times at the capacity limitation of 600 mAh·g−1. The superiority may attribute to the enhanced stabilization of Ce0.8Gd0.2O2-δ nanoparticles through doping process, which can preserve the nanoparticles from migration and aggregation during cycle process.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalJournal of Power Sources
Volume400
DOIs
Publication statusPublished - 2018 Oct 1
Externally publishedYes

Keywords

  • Ceria
  • Cycle stability
  • Gadolinium doping
  • Graphene oxide

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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