| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Stabilization of Zinc Metal Anodes with Polyacrylamide as an Electrolyte Additive |
| LI Xueyan1,*, ZHANG Mengxi1, PEI Wenle2, LI Shasha1, LI Peng1
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1 School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China
2 Engineering Research Center of Heavy Machinery of Ministry of Education, Taiyuan University of Science and Technology, Taiyuan 030024, China |
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Abstract Aqueous zinc-ion batteries are considered as a promising energy storage system due to their low cost and high safety. The zinc metal can be directly used as the anode of aqueous zinc ion batteries because of its high theoretical volume-specific capacity and low redox potential. However, the zinc metal anode has problems such as self-corrosion and zinc dendrite growth, which seriously shorten the battery cycle life and restricts its practical application. In this work, a polymer polyacrylamide (PAM) was designed as an electrolyte additive for zinc ion batteries, and it was found that the batteries showed the optimal cycling performance in the electrolyte system with 2 g/L PAM, and the zinc symmetric batteries remains steady after 2 800 h at 5 mA/cm2 and 1 mAh/cm2. Further electrochemical tests and SEM characterization demonstrated that the PAM additive was able to inhibit metallic zinc dendrites and mitigate zinc electrode corrosion. This work provides a new idea for designing high-performance of aqueous electrolyte additives through functional electrolyte additives.
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Published: 10 August 2024
Online: 2024-08-29
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| Fund:Basic Research Project for Young Scientists of Shanxi Province (202303021212214, 202203021212301, 202203021212316), the Scientific and Technologic Innovation Programs of Higher Education Institutions in Shanxi (2022L322, 2022L273, 2022L309), the Award Fund for Outstanding Doctors Working in Shanxi (20222095, 20222097), and the Doctoral Research Initiation Fund of Taiyuan University of Science and Technology (20222027, 20222030). |
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2024, Vol. 38 
