对于高度可逆阳极的超低成本疏水性有机涂层
Shixun Wang1,2, Zhiquan Wei1, Yiqiao Wang1
1Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, S.A.R., P. R. China.
Angewandte Chemie (International ed. in English)
|February 4, 2026
概括
工程化疏水电解质添加剂使得无树的水性离子电池 (ZIB) 具有极低的负载和成本. 这一突破确保了先进的能源存储的稳定,高性能ZIB.
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:
- 水性离子电池 (ZIB) 面临着岩形成和高添加成本的挑战.
- 当前的电解质添加剂通常需要高负载或具有水友性问题,限制ZIB性能和可扩展性.
研究的目的:
- 开发一种具有成本效益和可扩展的方法来创建无树的ZIB.
- 设计一种具有超低负载的疏水电解质添加剂,以提高ZIB性能和寿命.
主要方法:
- 开发了一种易于浸泡的处理方法,在阳极上沉积一个纳米级的疏水性1,3-Di ((o-tolyl) thiourea (DTH) 层.
- 研究了使用硬币和袋式电池配置的DTH修改ZIB的电化学性能.
- 评估了添加剂的成本效益和长期循环稳定性.
主要成果:
- 实现了超低负载 (5.37 × 10-13 M) 的纳米级DTH层沉积,并实现了卓越的成本效益 (1.43 × 10-7 USD Ah-1).
- 在硬币电池中以最小的添加成本在2 A g-1 时经过2500个周期的稳定循环.
- 袋式电池在1200个循环后显示了99.9%的平均库伦比效率和72%的容量保留,其高能量密度为143Wh kg-1 .
结论:
- 疏水性DTH层有效地抑制了树突和寄生反应,优化了 Zn 的电化学作用.
- 这种低成本,可扩展的策略使耐用,高性能水性ZIBs成为可能.
- 这些发现为开发具有成本效益和可扩展的水性电池系统提供了基础.
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