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通过微小的协调分散来实现化界面,使得无地铁的金属阳极能够实现化

Chen Liu¹, Wei Zhang², Yiran Yang¹

¹State Key Laboratory of Space Power-Sources, MOE Engineering Research Center for Electrochemical Energy Storage and Carbon Neutrality in Cold Regions, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.

Journal of colloid and interface science

|June 6, 2025

概括

带有S/P/Zn修改的工程铜网可使金属电池 (LMB) 实现统一的涂. 该战略提高了循环稳定性和安全性,解决了高能量密度电池应用的关键挑战.

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:

金属电池 (LMB) 提供高能量密度,但患有树增长和不良循环稳定性.
不受控制的化和消耗导致LMB的容量减弱和安全隐患.

研究的目的:

为LMBs开发一种修改后的电流收集器,以调节沉积并提高电池性能.
为了解决树的扩散,并提高LMBs的循环稳定性和安全性.

主要方法:

使用酸蚀刻和协调制造一个S/P/Zn修改的铜网 (mCu@HCl-Zn-DDTP).
修改网格的特性,以实现统一的涂层和固体电解质间相 (SEI) 形成.
在半电池和全电池 (用LFP阴极) 中对修改后的电流采集器进行电化学测试.

主要成果:

经过修改的铜网为统一的涂层提供了便利,抑制了树岩的形成.
在SEI中观察到增强的石化性和稳定的无机成分 (Li2S,Li3P,Li2O).
在0.5mA/cm2的半细胞中达到1000个稳定周期,在2C和5C的500个周期后,在全细胞中保持超过95%的容量.

结论:

修改S/P/Zn铜网是一种有效的策略,可以提高金属电池的性能.
这种方法成功地减轻了接口挑战,使稳定和安全的高能量密度LMBs成为可能.
目前开发的集电器工程战略为先进的电池技术的实际应用铺平了道路.

关键词:

3D电流收集器 3D电流收集器协调分散的协调分散.甲基二甲基酸盐离子二甲基二甲基酸盐离子金属阳极是一种金属阳极.石质性修饰是一种改造.

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