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Corrosion as the origin of limited lifetime of vanadium oxide-based aqueous zinc ion batteries

Nature communications, 2022-05, Vol.13 (1), p.2371-2371, Article 2371 [Peer Reviewed Journal]

2022. The Author(s). ;The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2022 ;ISSN: 2041-1723 ;EISSN: 2041-1723 ;DOI: 10.1038/s41467-022-29987-x ;PMID: 35501314

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  • Title:
    Corrosion as the origin of limited lifetime of vanadium oxide-based aqueous zinc ion batteries
  • Author: Kim, Yangmoon ; Park, Youngbin ; Kim, Minkwan ; Lee, Jimin ; Kim, Ki Jae ; Choi, Jang Wook
  • Subjects: Anodes ; Batteries ; Corrosion ; Electrodes ; Energy storage ; Low currents ; pH control ; pH effects ; Rechargeable batteries ; Storage batteries ; Storage systems ; Sustainability ; Vanadium ; Vanadium oxides ; Zinc
  • Is Part Of: Nature communications, 2022-05, Vol.13 (1), p.2371-2371, Article 2371
  • Description: Aqueous zinc ion batteries are receiving increasing attention for large-scale energy storage systems owing to their attractive features with respect to safety, cost, and scalability. Although vanadium oxides with various compositions have been demonstrated to store zinc ions reversibly, their limited cyclability especially at low current densities and their poor calendar life impede their widespread practical adoption. Herein, we reveal that the electrochemically inactive zinc pyrovanadate (ZVO) phase formed on the cathode surface is the main cause of the limited sustainability. Moreover, the formation of ZVO is closely related to the corrosion of the zinc metal counter electrode by perturbing the pH of the electrolyte. Thus, the dissolution of VO (OH) , the source of the vanadium in the ZVO, is no longer prevented. The proposed amalgamated Zn anode improves the cyclability drastically by blocking the corrosion at the anode, verifying the importance of pH control and the interplay between both electrodes.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2041-1723
    EISSN: 2041-1723
    DOI: 10.1038/s41467-022-29987-x
    PMID: 35501314
  • Source: PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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