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Construction of SnS2/SnO2 heterostructures with enhanced potassium storage performance

  • Guoquan Suo
  • , Dan Li
  • , Lei Feng
  • , Xiaojiang Hou
  • , Xiaohui Ye
  • , Li Zhang
  • , Qiyao Yu
  • , Yanling Yang*
  • , Wei (Alex) Wang
  • *Corresponding author for this work
  • Shaanxi University of Science and Technology
  • Beijing Institute of Technology
  • Peking University

Research output: Contribution to journal › Article › peer-review

Abstract

Increasing attention has been focused on potassium ion batteries (KIBs) as promising energy-storage system (ESS) owing to the abundance and low-cost of potassium resources. Here, SnS2/SnO2 heterostructures were successfully fixed onto stainless steel mesh (SnS2/SnO2/SSM) through a facile two-step hydrothermal method and used as anodes for KIBs. Due to the advantages of SnS2/SnO2 heterostructures and good conductivity of SSM substrate, the SnS2/SnO2/SSM anodes display enhanced electrochemical performance. The SnS2/SnO2/SSM anodes deliver specific capacity of 394 mA h g−1 at 50 mA g−1 over 100 cycles, better than SnO2/SSM. Even at 500 mA g-1 after 250 cycles, high capacity of 155 mA h g−1 can still be obtained.

Original languageEnglish
Pages (from-to)167-172
Number of pages6
JournalJournal of Materials Science and Technology
Volume55
DOIs
Publication statusPublished - 15 Oct 2020
Externally publishedYes

Keywords

  • Anode
  • Heterostructures
  • Potassium-ion batteries
  • SnS/SnO

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