Establishing aqueous zinc-ion batteries for sustainable energy storage

Jingxin Zhao, Hongyu Lu, Jianhong Peng, Xifei Li, Jiujun Zhang, Bingang Xu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)

Abstract

Aqueous rechargeable Zn-ion batteries (ARZIBs) have been becoming a promising candidates for advanced energy storage owing to their high safety and low cost of the electrodes. However, the poor cyclic stability and rate performance of electrodes severely hinder their practical applications. Here, an ARZIBs configuration consisting of Cr3+-substituted Cu-Rich Prussian blue analogues (CuCrFe(CN)6) cathode, electrodeposited zinc nanosheets on copperclad carbon framework (ZnNS@CuCF) anode, and Zn(OTf)2-based electrolyte with ethylene sulfate (DTD) that are proposed. Combining the in situ characterization, ex situ synchrotron radiation and density functional theory (DFT) calculations, the Cr3+-substitution and K+ extraction can effectively lower the band gap of the electrodes and Zn ion diffusion activation energy. Thus, the assembled ARZIBs system delivers the excellent electrochemical performance such as large specific capacity of 183.9 mAh g−1, high energy density of 239.2 Wh kg−1 and impressive cyclic stability with the capacity retention of 92.4% after 13,000 discharging/charging cycles.

Original languageEnglish
Article number102846
JournalEnergy Storage Materials
Volume60
DOIs
Publication statusPublished - Jun 2023

Keywords

  • Cu-Rich Prussian blue analogues
  • Large-capacity
  • Stable Zn electrodeposition
  • Ultralong lifespan
  • Zinc-ion batteries

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Materials Science
  • Energy Engineering and Power Technology

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