Synthesis and electrochemical investigation of highly dispersed ZnO nanoparticles as anode material for lithium-ion batteries

Haipeng Li, Yaqiong Wei, Yongguang Zhang, Fuxing Yin, Chengwei Zhang, Gongkai Wang, Zhumabay Bakenov

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Highly dispersed ZnO nanoparticles were prepared by a versatile and scalable sol-gel synthetic technique. High-resolution transmission electronic microscopy (HRTEM) showed that the as-prepared ZnO nanoparticles are spherical in shape and exhibit a uniform particle size distribution with the average size of about 7 nm. Electrochemical properties of the resulting ZnO were evaluated by galvanostatic discharge/charge cycling as anode for lithium-ion battery. A reversible capacity of 1652 mAh g−1 was delivered at the initial cycle and a capacity of 318 mAh g−1 was remained after 100 cycles. Furthermore, the system could deliver a reversible capacity of 229 mAh g−1 even at a high current density of 1.5 C. This outstanding electrochemical performance could be attributed to the nano-sized features of highly dispersed ZnO particles allowing for the better accommodation of large strains caused by particle expansion/shrinkage along with providing shorter diffusion paths for Li+ ions upon insertion/deinsertion.

Original languageEnglish
Pages (from-to)1387-1393
Number of pages7
JournalIonics
Volume22
Issue number8
DOIs
Publication statusPublished - Aug 1 2016
Externally publishedYes

Keywords

  • Anode
  • Highly dispersed ZnO nanoparticles
  • Lithium ion battery
  • Sol-gel

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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