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通过涂层性金属来使分离器具有功能,用于无基无阳极的金属电池

Ai Qin Thang^1,2, Shuen Tso¹, Bei-Er Jia¹

¹School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.

Chemistry, an Asian journal

|December 5, 2023

概括

一种新型的反涂层分离器增强了无阳极金属电池的稳定性. 这改善了涂层,导致电池寿命显著延长和容量保留更高.

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:

无阳极金属电池 (AFLMB) 提供高能量密度,但遭受不稳定的循环.
树岩的形成和不均的涂层是限制AFLMB性能的主要挑战.

研究的目的:

通过改善涂 behaviour 来开发一个稳定的 AFLMB.
通过一种新的分离器修改来增强AFLMBs的循环寿命.

主要方法:

用无形反 (Sb) 涂层的分离器 (SbSC) 的制造.
使用SbSC用LiNi_0.8 Mn_0.1 Co_0.1 O₂ (NMC811) 阴极对全细胞进行电化学测试.
在现场半细胞沉积和密度功能理论 (DFT) 计算.

主要成果:

SbSC 证明了低核化过强的潜力,并促进了紧,无树,均的涂层.
使用SbSC的全电池在60个周期后实现了99.8%的库存保留率 (LIRR) 和93.6%的容量保留率.
使用原始分离器的对照细胞显示循环性能差,LIRR低.

结论:

用金属涂层对分离器进行功能化是AFLMBs的一个可行的策略.
采用SbSC方法显著提高了涂层的均性,并延长了AFLMB循环寿命.
这种方法为开发实用,持久的AFLMB提供了一个有希望的途径.

关键词:

没有阳极的无极体.抗氧化是最重要的.具有功能化的分离器.这是一种性性化物.核形成和生长的增长.

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