Cuprous oxide/copper particles prepared by a facile wet-chemical reduction approach as anode material for Li Ion batteries

Yajuan Bian, Meng Yang, Xiangyu Zhao, Liqun Ma, Chuanwei Jin, Yi Ding, Xiaodong Shen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Cu 2O/Cu composite particles were successfully synthesized by a novel facile template-free chemical reduction route at room temperature. X-ray diffraction (XRD) results showed that the sample mainly consisted of the Cu 2O phase coexisting with a few Cu phases. Scanning electron microscopy (SEM) images indicated that the regular particles with a cubic shape about 2-3 μm is Cu 2O. In addition, the electrochemical behavior of the Cu 2O/Cu composite electrode and copper electrode during the charging and discharging process were both investigated. It was found that the first discharge capacity of Cu 2O/Cu composite electrode was up to 650 mAh·g -1, which is much higher than the theoretical capacity of Cu 2O (about 375 mAh·g -1). The additional capacity is attributed to the electrodeposition of lithium on pure copper, confirmed by the electrochemical property of copper as the anode material of the lithium-ion battery. The copper electrode presented a high discharge capacity of 280 mAh·g -1 during the first cycle. However, a large irreversible capacity as same as the cuprous oxide electrode was observed during the first charging process. It is indicated that deposition of lithium on the Cu particle surface acts as a barrier preventing the contact between the Cu and the electrolyte. Furthermore, the Cu 2O/Cu composite electrode can exhibit reversible capacity of 210 mAh·g -1 at a charge-discharge rate of 30 mA·g -1 after 40 cycles.

Original languageEnglish
Title of host publicationLatest Development of Applied Materials Technology
Pages28-35
Number of pages8
DOIs
StatePublished - 2012
Event6th Cross-Strait Conference on Advanced Engineering Materials - Nanjing, China
Duration: 8 Nov 201111 Nov 2011

Publication series

NameAdvanced Materials Research
Volume509
ISSN (Print)1022-6680

Conference

Conference6th Cross-Strait Conference on Advanced Engineering Materials
Country/TerritoryChina
CityNanjing
Period8/11/1111/11/11

Keywords

  • Charge and discharge testing
  • Copper
  • Cu O/Cu composite
  • Electrochemical property
  • Electrodeposition of lithium

Fingerprint

Dive into the research topics of 'Cuprous oxide/copper particles prepared by a facile wet-chemical reduction approach as anode material for Li Ion batteries'. Together they form a unique fingerprint.

Cite this