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Aqueous Zinc‐Ion Batteries: Unraveling the Dissolution‐Mediated Reaction Mechanism of α‐MnO 2 Cathodes for Aqueous Zn‐Ion Batteries (Small 48/2020)
Author(s) -
Kim Sung Joo,
Wu Daren,
Sadique Nahian,
Quilty Calvin D.,
Wu Lijun,
Marschilok Amy C.,
Takeuchi Kenneth J.,
Takeuchi Esther S.,
Zhu Yimei
Publication year - 2020
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202070259
Subject(s) - dissolution , aqueous solution , electrochemistry , zinc , ion , cathode , transmission electron microscopy , inorganic chemistry , reaction mechanism , chemistry , materials science , chemical engineering , electrode , nanotechnology , catalysis , metallurgy , organic chemistry , engineering
In article number 2005406, Esther S. Takeuchi, Yimei Zhu, and co‐workers demonstrate the dissolution‐mediated reaction mechanism of Zn/α‐MnO 2 system for aqueous zinc‐ion batteries via transmission electron microscopy. It involves α‐MnO 2 dissolution that activates the cell by inducing the reversible formation of Zn 4 SO 4 (OH) 6 · x H 2 O and ZnMn 3 O 7 ·3H 2 O upon electrochemical cycling via (de‐)insertion of Mn and Zn ions.