Affiliation:
1. Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education) School of Materials Science and Engineering Tianjin University Tianjin 300072 China
2. Tianjin Key Laboratory of Composite and Functional Material Department of Materials Science and Engineering Tianjin University Tianjin 300072 China
3. Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China
Abstract
AbstractThe advent of wearable electronics has strongly stimulated advanced research into the exploration of flexible zinc−air batteries (ZABs) with high theoretical energy density, high inherent safety, and low cost. However, the half‐open battery structure and the high concentration of alkaline aqueous environment pose great challenges on the electrolyte retention capability and the zinc anode stability. Herein, a starch‐based superabsorbent hydrogel polymer electrolyte (SSHPE) with high ionic conductivity, electrolyte absorption and retention capabilities, strong alkaline resistance and high zinc anode stability has been designed and applied in ZABs. Experimental and calculational analyses probe into the root of the superiority of SSHPEs, confirming the significance of the carboxyl functional groups along their polymer chains. These features endow the as‐fabricated ZAB a long cycle life of 300 h, much longer than that with commonly used poly(vinyl alcohol)‐based electrolyte.
Subject
General Chemistry,Catalysis
Cited by
7 articles.
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