使用 LiOH 水溶液降低钴酸锂的烧结温度

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL Solid State Ionics Pub Date : 2024-10-16 DOI:10.1016/j.ssi.2024.116717

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引用次数: 0

摘要

为了实现基于氧化物的全固态锂离子电池，在电池制造过程中降低钴酸锂正极的烧结温度是防止与其他成分发生不良化学反应的重要课题。在此，我们报告了在钴酸锂粉末烧结过程中加入 LiOH 水溶液可提高电池性能。通过原位透射电子显微镜对加入和未加入 LiOH 溶液的样品以及加入纯水的样品进行比较研究发现，加入 LiOH 溶液的样品在更低的温度下出现液相，从而改善了钴酸锂颗粒的连通性。

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Lowering the sintering temperature of LiCoO2 using LiOH aqueous solution

For realizing oxide-based all-solid-state lithium-ion batteries, lowering sintering temperature of LiCoO₂ cathode during battery fabrication is important subject to prevent undesired chemical reaction with other constituent substances. Here we report that the addition of LiOH aqueous solution to the LiCoO₂ powder upon sintering improves the battery performance. Comparative study for the samples with and without LiOH solution, and with pure water by in situ transmission electron microscopy reveals that the liquid phase appears at much lower temperatures for the sample with the LiOH addition that improves the connectivity of LiCoO₂ particles.

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来源期刊

Solid State Ionics 物理-物理：凝聚态物理

CiteScore

6.10

自引率

3.10%

发文量

152

审稿时长

58 days

期刊介绍： This interdisciplinary journal is devoted to the physics, chemistry and materials science of diffusion, mass transport, and reactivity of solids. The major part of each issue is devoted to articles on: (i) physics and chemistry of defects in solids; (ii) reactions in and on solids, e.g. intercalation, corrosion, oxidation, sintering; (iii) ion transport measurements, mechanisms and theory; (iv) solid state electrochemistry; (v) ionically-electronically mixed conducting solids. Related technological applications are also included, provided their characteristics are interpreted in terms of the basic solid state properties. Review papers and relevant symposium proceedings are welcome.