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An Aqueous Dual‐Ion Battery Cathode of Mn 3 O 4 via Reversible Insertion of Nitrate
Author(s) -
Jiang Heng,
Wei Zhixuan,
Ma Lu,
Yuan Yifei,
Hong Jessica J.,
Wu Xianyong,
Leonard Daniel P.,
Holoubek John,
Razink Joshua James,
Stickle William F.,
Du Fei,
Wu Tianpin,
Lu Jun,
Ji Xiulei
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201814646
Subject(s) - aqueous solution , extended x ray absorption fine structure , xanes , cathode , electrochemistry , manganese , battery (electricity) , ion , nitrate , oxide , high resolution transmission electron microscopy , chemistry , inorganic chemistry , materials science , electrode , spectroscopy , nanotechnology , absorption spectroscopy , transmission electron microscopy , organic chemistry , power (physics) , physics , quantum mechanics
We report reversible electrochemical insertion of NO 3 − into manganese(II, III) oxide (Mn 3 O 4 ) as a cathode for aqueous dual‐ion batteries. Characterization by TGA, FTIR, EDX, XANES, EXAFS, and EQCM collectively provides unequivocal evidence that reversible oxidative NO 3 − insertion takes place inside Mn 3 O 4 . Ex situ HRTEM and corresponding EDX mapping results suggest that NO 3 − insertion de‐crystallizes the structure of Mn 3 O 4 . Kinetic studies reveal fast migration of NO 3 − in the Mn 3 O 4 structure. This finding may open a new direction for novel low‐cost aqueous dual‐ion batteries.