Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 17, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202200809
Keywords
Aqueous Batteries; Manganese-Ion Batteries; Proton Intercalation; Vanadium Oxide
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Funding
- National Natural Science Foundation of China [51822205, 21875121]
- Natural Science Foundation of Tianjin [18JCJQJC46300, 19JCZDJC31900]
- Ministry of Education of China [B12015]
- Frontiers Science Center for New Organic Matter, Nankai University [63181206]
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This study introduces proton intercalation chemistry in aqueous manganese-ion batteries, utilizing layered AlVO cathode to achieve enhanced electrochemical performance. It provides a new approach for the design of high-performance aqueous MIBs.
Aqueous manganese-ion batteries (MIBs) are promising energy storage systems because of the distinctive merits of Mn metal, in terms of high abundance, low cost, nontoxicity, high theoretical capacity and low redox potential. Conventional MIBs are based on the Mn2+ ion storage mechanism, whereas the capacity in cathode materials is generally limited due to the high charge density and large solvated ionic radius of Mn2+ ions in aqueous electrolytes. Herein, proton intercalation chemistry is introduced in aqueous MIBs, in which the layered Al0.1V2O5.1.5 H2O (AlVO) cathode exhibits a consequent Mn2+ and H+ ion intercalation/extraction process. Such an energy storage mechanism contributes to enhanced electrochemical performance, including high capacity, fast reaction kinetics and stable cycling behavior. Benefiting from this proton intercalation chemistry, the aqueous Mn||AlVO cells could deliver high specific energy and power simultaneously. This work provides a route for the design of high-performance aqueous MIBs.
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