MoS2/MnO2 heterostructured nanodevices for electrochemical energy storage

Xiaobin Liao, Yunlong Zhao, Junhui Wang, Wei Yang, Lin Xu, Xiaocong Tian, Yi Shuang, Kwadwo Asare Owusu, Mengyu Yan, Liqiang Mai

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


Hybrid or composite heterostructured electrode materials have been widely studied for their potential application in electrochemical energy storage. Whereas their physical or chemical properties could be affected significantly by modulating the heterogeneous interface, the underlying mechanisms are not yet fully understood. In this work, we fabricated an electrochemical energy storage device with a MoS2 nanosheet/MnO2 nanowire heterostructure and designed two charge/discharge channels to study the effect of the heterogeneous interface on the energy storage performances. Electrochemical measurements show that a capacity improvement of over 50% is achieved when the metal current collector was in contact with the MnO2 instead of the MoS2 side. We propose that this enhancement is due to the unidirectional conductivity of the MoS2/MnO2 heterogeneous interface, resulting from the unimpeded electrical transport in the MnO2-MoS2 channel along with the blocking effect on the electron transport in the MoS2-MnO2 channel, which leads to reaction kinetics optimization. The present study thus provides important insights that will improve our understanding of heterostructured electrode materials for electrochemical energy storage.

Original languageEnglish
Pages (from-to)2083-2092
Number of pages10
JournalNano Research
Issue number4
Publication statusPublished - 2018 Apr 1
Externally publishedYes


  • electrical transport
  • electrochemical performance
  • energy storage
  • heterostructure
  • nanoscale device

ASJC Scopus subject areas

  • Materials Science(all)
  • Electrical and Electronic Engineering


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