Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 37, Pages 42285-42293Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c10321
Keywords
supramolecular self-assembly; hydrogels; hydrogel electrolytes; Zn-MnO2 battery
Funding
- National Natural Science Foundation of China [21902044]
- China Postdoctoral Science Foundation [2019M652517]
- Major Project of Science and Technology, Education Department of Henan Province [202102310224]
- 2019 Students Innovative Pilot Plan of Henan University [201910475033, 201910475034]
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Multifunctional metal-organic supramolecular hydrogels have achieved great progress nowadays. However, their applications in aqueous batteries for flexible energy storage devices remain limited due to their unsatisfactory mechanical properties. Here, we report a rapid formation of supramolecular hydrogel by adenosine 5'-monophosphate (AMP) and manganese ions (Mn2+). Additionally, the AMP-Mn hydrogel is combined with chemical cross-linking poly(vinyl alcohol) (PVA) polymer networks to form an AMP-Mn/PVA hybrid hydrogel, which effectively solves the problems with regard to the mechanical properties and stability of metal-organic supramolecular hydrogels as well as self-healing of tough chemical cross-linking polymer networks. The AMP-Mn/PVA hybrid hydrogel served as the hydrogel electrolyte to fabricate flexible Zn-MnO2 batteries, which exhibit fast ion conductivity, excellent electrochemical stability, and robust mechanical strength, indicating feasible practical application prospects. This investigation provides a promising opportunity for the application of metal-organic supramolecular hydrogels in the field of energy storage.
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