Highly Stable Aqueous Zinc-Ion Storage Using a Layered Calcium Vanadium Oxide Bronze Cathode

Chuan Xia, Jing Guo, Peng Li, Xixiang Zhang, Husam N. Alshareef*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

736 Scopus citations

Abstract

Cost-effective aqueous rechargeable batteries are attractive alternatives to non-aqueous cells for stationary grid energy storage. Among different aqueous cells, zinc-ion batteries (ZIBs), based on Zn2+ intercalation chemistry, stand out as they can employ high-capacity Zn metal as the anode material. Herein, we report a layered calcium vanadium oxide bronze as the cathode material for aqueous Zn batteries. For the storage of the Zn2+ ions in the aqueous electrolyte, we demonstrate that the calcium-based bronze structure can deliver a high capacity of 340 mA h g−1 at 0.2 C, good rate capability, and very long cycling life (96 % retention after 3000 cycles at 80 C). Further, we investigate the Zn2+ storage mechanism, and the corresponding electrochemical kinetics in this bronze cathode. Finally, we show that our Zn cell delivers an energy density of 267 W h kg−1 at a power density of 53.4 W kg−1.

Original languageEnglish (US)
Pages (from-to)3943-3948
Number of pages6
JournalAngewandte Chemie - International Edition
Volume57
Issue number15
DOIs
StatePublished - Apr 3 2018

Keywords

  • batteries
  • calcium vanadium oxide bronze
  • electrode materials
  • intercalation
  • zinc

ASJC Scopus subject areas

  • General Chemistry
  • Catalysis

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