Nickel substituted LiMn2O4 cathode with durable high-rate capability for Li-ion batteries

Yun Xu, Gen Chen, Engang Fu, Meng Zhou, Marco Dunwell, Ling Fei, Shuguang Deng, Paul Andersen, Yongqiang Wang, Quanxi Jia, Hongmei Luo

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Spinel LiMn2-xNixO4 (x = 0, 0.1, 0.2) nanoparticles were prepared through a simple one-step polymer-assisted chemical solution method. When x = 0.1, the cathode exhibited the best durable rate capability, with 100% of the capacity retained (∼100 mAh g-1) after 400 cycles at 10 C current rate. The excellent cyclability and rate capability originate from the thin carbon layer automatically formed from incomplete depolymerisation of polymers and the improved conductivity due to the nickel dopant. The improved conductivity was confirmed by less polarization at high current rate.

Original languageEnglish (US)
Pages (from-to)18441-18445
Number of pages5
JournalRSC Advances
Volume3
Issue number40
DOIs
StatePublished - Oct 28 2013
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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