| 聚乙烯醇基导电水凝胶电解质在锌离子电池中的应用 | |
| Application of poly(vinyl alcohol) conductive hydrogel electrolytes in zinc ion batteries | |
| 摘要: 通过加入聚苯胺(PANI)提高聚乙烯醇(PVA)水凝胶电解质的导电性，并引入纳米SiO2，使其与PVA中的羟基形成氢键相互作用，从而改善电解质的力学性能、离子传输能力和结构稳定性。所制备的PVA/PANI/SiO2导电水凝胶电解质表现出高的拉伸应力(15.45 MPa)、应变(516.09%)、离子迁移数(0.56)和离子电导率(0.992 mS·cm-1)，以及宽的电化学窗口(2.56 V)。使用该电解质的对称电池可实现超过1 200 h的稳定循环且锌沉积均匀。改性后的电解质显著提升了电池的电化学和力学性能，同时增强了其循环稳定性和电化学可逆性。 | |
| 关键词: 锌离子电池 聚乙烯醇水凝胶电解质 电化学性能 聚苯胺 二氧化硅 | |
| 基金项目: 国家自然科学基金(No.52062004，52372185)、贵州省高层次创新型人才(黔科合平台人才-GCC[2022]013-1)、贵州省高等学校先进电化学储能器件及关键材料创新团队(黔教技[2023]054号)和贵州省先进电化学储能器件及关键材料科技创新人才团队(黔科合平台人才-CXTD[2023]016)资助。 | |
| Abstract: 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. | |
| Keywords: zinc-ion battery poly(vinyl alcohol) hydrogel electrolyte electrochemical performance polyaniline silica | |
| 投稿时间：2024-10-14 修订日期：2025-04-01 | |
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