动态聚化捕获和质子捕获双网络工程,用于高实际容量,长周期和高温Zn─I电池
Yi Tan1, Weihua Xu1, Fan Yang2
1University Engineering Research Center of Green Chemical New Materials, Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China.
Advanced materials (Deerfield Beach, Fla.)
|January 12, 2026
概括
氨基酸 (AMI) 有效地捕获聚化并缓冲水性-电池中的pH值. 这种双网络策略增强了稳定性,并使电网规模的能源存储能够承受高负载.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 水性- (Zn-I2) 电池为电网规模的能源存储提供了潜力.
- 挑战包括聚化穿和接口反应,限制高负载的性能.
研究的目的:
- 为了解决水性Zn-I2电池中的聚化穿和接口反应.
- 引入氨基尼古丁酸 (AMI) 作为双重功能电解质添加剂.
主要方法:
- 使用AMI的活性位点来抑制溶解和迁移的动态聚化捕获.
- 通过AMI捕获质子和缓冲pH以抑制阳极的副作用.
主要成果:
- 艾米有效地捕获三化离子 (I3-).
- 艾米减轻了pH值波动,抑制了阳极上的界面副作用.
- Zn//Zn对称电池显示>7000小时的稳定性.
- -I2电池在超高负荷 (23.8 mg cm-2) 时达到>2800个循环,在50°C时达到>3000个循环.
结论:
- 艾米作为一种新的电解质添加剂用于聚酸捕获和pH缓冲.
- 这一策略使能耗密集,耐用,高温的水性Zn-I2电池成为可能.
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