通过可回收的粘土基电解质膜进行协同的离子和溶解调节,用于稳定的电池
Hai Xu1, Ruanye Zhang1, Derong Luo1
1Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
ACS nano
|December 12, 2023
概括
我们开发了一种基于离子的新型蒙莫里隆 (ZMT) 电解质膜,以稳定可充电的水性-电池. 这种膜有效地抑制了聚化的溶解,并改善了电池的性能和寿命.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 可充电的水性Zn-电池面临着由于聚酸溶解和不稳定的阳极/电解质接口的挑战.
- 这些问题限制了它们的实际应用和长期稳定性.
研究的目的:
- 开发一种以离子为基础的蒙莫里隆石 (ZMT) 电解质膜,以提高电池的性能.
- 为了改善稳定性,研究离子选和溶解调节的机制.
主要方法:
- 制造一个ZMT电解质膜,为Zn2+离子量身定制的溶解罩.
- 使用现场表征技术研究聚化生成和穿效应.
- 用ZMT膜对Zn-电池进行电化学测试.
主要成果:
- 该ZMT膜实现了高的Zn2+转移数 (tZn2+=0.72),促进了均的Zn沉积/剥离.
- 通过ZMT的强烈吸附,有效抑制聚酸穿效应和副作用.
- 证明了高容量 (0.45 mAh cm-2),优异的库伦比克效率 (99.5%) 和长期循环稳定性 (在13500个循环后保持95%).
结论:
- 该ZMT电解质膜显著提高了水性Zn-电池的稳定性和性能.
- 离子和溶解调节的协同效应对于抑制聚硫化物穿至关重要.
- 耐用且可回收的ZMT膜显示出实际应用的前景,包括具有高面积容量 (2.4 mAh cm-2) 的袋式电池.
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