Casting amorphorized SnO2/MoO3 hybrid into foam-like carbon nanoflakes towards high-performance pseudocapacitive lithium storage

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Hongkang Wang
  • Sanmu Xie
  • Tianhao Yao
  • Jinkai Wang
  • Yiyi She
  • Jian-Wen Shi
  • Guangcun Shan
  • Qiaobao Zhang
  • Xiaogang Han

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)299-308
Journal / PublicationJournal of Colloid and Interface Science
Volume547
Early online date2 Apr 2019
Publication statusPublished - 1 Jul 2019

Abstract

We report an amorphorization-hybridization strategy to enhance lithium storage by casting atomically mixed amorphorized SnO2/MoO3 into porous foam-like carbon nanoflakes (denote as SnO2/MoO3@CNFs, or SMC in short), which are simply prepared by annealing tin(II)/molybdenum(IV) 2-ethylhexanoate within CNFs under ambient atmosphere at a low temperature (300 °C). The SnO2/MoO3 loading amount within CNFs can be easily adjusted by controlling the Sn/Mo/C precursors. When examined as lithium ion battery (LIB) anode materials, the amorphorized SnO2/MoO3@CNFs with carbon content of 32 wt% (also denote as SMC-32, in which the number represents the carbon content) deliver a high reversible capacity of 1120.5 mA h/g after 200 cycles at 200 mA/g and then 651.5 mA h/g after another 300 cycles at 2000 mA/g, which is much better than that of the crystalline SnO2/CNFs (carbon content of 34 wt%), MoO3/CNFs (carbon content of 22.7 wt%), or SnO2/MoO3@CNFs (with lower carbon contents of 11 and 25 wt%). The electrochemical measurements as well as the ex situ structure characterization clearly suggest that combination of amorphorization and hybridization of SnO2/MoO3 with CNFs synergistically contributes to the superior lithium storage performance with high pseudocapacitive contribution.

Research Area(s)

  • Amorphorization-hybridization, Foam-like carbon nanoflakes, Lithium ion batteries, Pseudocapacitive contribution, SnO 2 /MoO 3 atomic scale mixture

Citation Format(s)

Casting amorphorized SnO2/MoO3 hybrid into foam-like carbon nanoflakes towards high-performance pseudocapacitive lithium storage. / Wang, Hongkang; Xie, Sanmu; Yao, Tianhao; Wang, Jinkai; She, Yiyi; Shi, Jian-Wen; Shan, Guangcun; Zhang, Qiaobao; Han, Xiaogang; Leung, Micheal KH.

In: Journal of Colloid and Interface Science, Vol. 547, 01.07.2019, p. 299-308.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review