Citation: Zhaoxuan ZHU, Lixin WANG, Xiaoning TANG, Long LI, Yan SHI, Jiaojing SHAO. Application of poly(vinyl alcohol) conductive hydrogel electrolytes in zinc ion batteries[J]. Chinese Journal of Inorganic Chemistry, ;2025, 41(5): 893-902. doi: 10.11862/CJIC.20240368 shu

Application of poly(vinyl alcohol) conductive hydrogel electrolytes in zinc ion batteries

School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China

Corresponding author: Yan SHI, shiyan1262006@126.com Jiaojing SHAO, shaojiao_jing@163.com
Received Date: 14 October 2024
Revised Date: 1 April 2025

Figures(6)

By adding polyaniline (PANI) to improve the conductivity of poly(vinyl alcohol) (PVA) hydrogel electrolyte and introducing nano-SiO₂ to form hydrogen bond interaction with the hydroxyl group in PVA, the mechanical properties, ion transport capacity, and structural stability of the electrolyte were improved. The prepared PVA/PANI/ SiO₂ conductive hydrogel electrolytes showed high tensile stress (15.45 MPa), strain (516.09%), high ion mobility (0.56), ionic conductivity (0.992 mS·cm^-1), and wide electrochemical window (2.56 V). A symmetrical battery using this electrolyte could achieve a stable cycle of more than 1 200 h with uniform deposition of zinc. The modified electrolyte significantly improves both the electrochemical and mechanical properties, while enhancing cycle stability and electrochemical reversibility.
- zinc-ion battery,
- poly(vinyl alcohol) hydrogel electrolyte,
- electrochemical performance,
- polyaniline,
- silica
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