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"氧化硫" - - 通过氧化的酸进行硫化固体电解质的新合成

Xiang Zhu^1,2,3, Pushun Lu^1,4, Yujing Wu^1,4

¹Tianmu Lake Institute of Advanced Energy Storage Technologies, Liyang 213300, Jiangsu, China.

|April 7, 2025

概括

一种新的辅助方法简化了从氧化物中合成硫化物固体电解质 (SEs),提高了空气稳定性,以获得更安全,更具成本效益的全固态电池 (ASSB). 这笔预付款有助于实际的ASSB生产.

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
化学工程是化学工程的重要组成部分.

背景情况:

硫化物固体电解质 (SE) 对于高能,安全的全固态电池 (ASSB) 是至关重要的,因为它们的导电性和可塑性.
目前的合成方法需要惰性大气,由于硫化物材料对空气的敏感性,增加了生产复杂性和成本.

研究的目的:

为各种硫化物固体电解质 (SE) 开发一种易于和空气稳定的合成途径.
从易于获得的氧化物前体中生产硫化物SE.
为了促进硫化物基ASSB的实际应用和大规模制造.

主要方法:

使用辅助硫化工艺从氧化原料中合成硫化SE.
被用来从氧化物前体中结合和去除氧气.
元素硫与剩余的混合物发生反应,形成目标硫化物SEs,包括Li$_{4}$SnS$_{4}$,Na$_{3}$SbS$_{4}$,和Li$_{6}$PS$_{5}$X (X=Cl,Br).

主要成果:

辅助方法成功地从氧化物前体中产生了各种硫化物SE.
该工艺使用无毒的和硫,提高了生产安全性.
组装的对称电池和全固态电池与合成的SEs.一起表现出稳定的循环性能.

结论:

辅助硫化为生产硫化SEs提供了一种实用,具有成本效益和更安全的替代方案.
这种方法解决了与传统硫化物合成相关的空气不稳定性挑战.
这些发现支持基于硫化物的ASSB的更广泛采用和商业化.

关键词:

硫化物固体电解质硫化物固体电解质所有固态电池都是固态电池.硫化过程中的硫化.合成方法的合成方法.

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