Realization restrain vanadium dissolution in aqueous zinc-ion batteries with amphoteric ionic polyacrylamide gel electrolyte
Source abstract
Abstract
Layered vanadium-based materials (VBMs) cathode has attracted enormous interest as a prospective candidate for aqueous zinc ion batteries (AZIBs). Whereas, the issues induced by dissolution of VBMs to electrolyte restrict the long cycle life of AZIBs. Herein, a polyacrylamide system’s gel electrolyte, poly acrylamide and 2-acrylamido-2-methylpropane sulfonic acid containing Zn 2+ (referred as ZnPAM-AMPS) is synthesized by thermal polymerization. As-prepared gel electrolyte exhibits a high ionic conductivity of 10.7 mS cm −1, and high electrochemical stability window to 1.6 V. What’s more, the ZnPAM-AMPS enables Zn plating/stripping over 1900 h at 0.1 mA cm −2. The dissolution of VBMs was effectively suppressed by the low free water content of ZnPAM-AMPS, a dissolvable Zn/ (NH 4) 2V 4O 9 cathode assembled battery with ZnPAM-AMPS demonstrate outstanding cycle life, which provides the innovative design for high performance AZIBs.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced battery technologies research · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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