The composite electrode of Bi@carbon-texture derived from metal-organic frameworks for aqueous chloride ion battery

Zishuai Zhang, Kaixiang Shen, Yu Zhou, Xianhua Hou, Qiang Ru, Qinyu He, Ching yuan Su, Linfeng Sun, Su Htike Aung, Fuming Chen

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Aqueous rechargeable batteries have been a hot research topic due to their high conductivity, low cost, and operational safety. Bismuth is deemed as a kind of promising anode material owing to its suitable negative working window and highly reversible redox reaction in aqueous chloride ion battery; however, it exhibits poor stability and volume expansion when oxidized to BiOCl during electrochemical process. Herein, we present a novel synthesized method of bismuth metal nanoparticles through the thermal reduction of Bi-MOF under hydrogen atmosphere. The Bi-particles with ~ 100 nm size are uniformly coated with a layer of carbon film. The aqueous chloride ion battery system consists of the synthesized bismuth as the anode, AgCl as the cathode, and 1 M NaCl (pH = 2) as the electrolyte. After 200 cycles, the specific capacity is 87.9 mAh g−1 at the current density of 400 mA g−1. After 1000 cycles, a durable specific capacity of 51.8 mAh g−1 was achieved under the current density of 1200 mA g−1 and the coulombic efficiency is above 99%. The electrochemical mechanism was further investigated by X-ray diffraction. The current work will be significant for the chloride ion energy storage and battery desalination.

Original languageEnglish
Pages (from-to)2395-2403
Number of pages9
JournalIonics
Volume26
Issue number5
DOIs
StatePublished - 1 May 2020

Keywords

  • Aqueous chloride ion electrode material
  • Bismuth-carbon nano-texture composites
  • Chloride ion battery
  • Metal-organic frameworks

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