Halide segregation to boost all-solid-state lithium-chalcogen batteries.

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-05-15 DOI:10.1126/science.adt1882

Jieun Lee,Shiyuan Zhou,Victoria C Ferrari,Chen Zhao,Angela Sun,Sarah Nicholas,Yuzi Liu,Chengjun Sun,Dominik Wierzbicki,Dilworth Y Parkinson,Jianming Bai,Wenqian Xu,Yonghua Du,Khalil Amine,Gui-Liang Xu

引用次数: 0

Abstract

Mixing electroactive materials, solid-state electrolytes, and conductive carbon to fabricate composite electrodes is the most practiced but least understood process in all-solid-state batteries, which strongly dictates interfacial stability and charge transport. We report on universal halide segregation at interfaces across various halogen-containing solid-state electrolytes and a family of high-energy chalcogen cathodes enabled by mechanochemical reaction during ultrahigh-speed mixing. Bulk and interface characterizations by multimodal synchrotron x-ray probes and cryo-transmission electron microscopy show that the in situ segregated lithium halide interfacial layers substantially boost effective ion transport and suppress the volume change of bulk chalcogen cathodes. Various all-solid-state lithium-chalcogen cells demonstrate utilization close to 100% and extraordinary cycling stability at commercial-level areal capacities.

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卤化物分离促进全固态锂-锂电池。

混合电活性材料、固态电解质和导电碳来制造复合电极是全固态电池中最常用但最不了解的工艺，它强烈地决定了界面稳定性和电荷输运。我们报道了在各种含卤素固态电解质的界面上普遍存在的卤化物偏析，以及在超高速混合过程中通过机械化学反应实现的高能硫阴极族。通过多模态同步x射线探针和低温透射电镜对本体和界面的表征表明，原位分离的卤化锂界面层显著提高了离子的有效输运，抑制了本体阴极的体积变化。各种全固态锂-锂电池的利用率接近100%，并且在商业水平的面积容量下具有非凡的循环稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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