NiO/C nanocapsules with onion-like carbon shell as anode material for lithium ion batteries

Xianguo Liu, Siu Wing Or, Chuangui Jin, Yaohui Lv, Chao Feng, Yuping Sun

Research output: Journal article publicationJournal articleAcademic researchpeer-review

75 Citations (Scopus)

Abstract

The synthesis of NiO/C nanocapsules with NiO nanoparticles as the core and onion-like carbon layers as the shell is reported. The NiO/C nanocapsules deliver an initial discharge capacity of 1689.4 mAh g-1at 0.5 C and maintain a high reversible capacity of 1157.7 mAh g-1after 50 cycles compared to the NiO nanoparticles of 383.5 mAh g-1. As an anode material for lithium ion batteries, the NiO/C nanocapsules exhibit a remarkable discharge capacity, a high rate charge-discharge capability and an excellent cycling stability. The improvements are ascribed to the fact that the onion-like carbon shells not only can provide enough voids to accommodate the volume change of NiO nanoparticles but also can prevent the formation of solid electrolyte interface (SEI) films on the surface of the NiO nanoparticles and hence the direct contact of Ni and SEI films upon lithium extraction.
Original languageEnglish
Pages (from-to)215-220
Number of pages6
JournalCarbon
Volume60
DOIs
Publication statusPublished - 1 Aug 2013

ASJC Scopus subject areas

  • Chemistry(all)

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