Beyond Conventional Coatings: Melt-Infiltration of Antiperovskites for High-Voltage All-Solid-State Batteries

IF 3.5 4区化学 Q2 ELECTROCHEMISTRY

ChemElectroChem Pub Date : 2025-08-21 DOI:10.1002/celc.202500286

Philip Henkel, Ruizhuo Zhang, Rajib Sahu, Christian Kübel, Jürgen Janek, Aleksandr Kondrakov, Torsten Brezesinski

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Abstract

Solid-state batteries (SSBs) have emerged as promising candidates for next-generation energy-storage solutions, particularly for electric vehicle applications. To overcome challenges related to interfacial stability and electro-chemo-mechanical degradation during operation, the development of protective surface coatings for cathode active materials (CAMs) is essential. Lithium-rich antiperovskites (LiRAPs) exhibit a unique set of beneficial properties, notably a high ionic partial conductivity at room temperature, enabling the deployment of advanced coating techniques via cost-effective and environmentally benign methods. In the present work, the application of LiRAP coatings to a layered Ni-rich CAM, namely LiNi_0.85Co_0.₁Mn_0.05O₂ (NCM85), is examined, utilizing a low-temperature and solvent-free approach. The effectiveness of the procedure is evaluated through microscopy analyses and electrochemical performance assessments. The results demonstrate a significant improvement in cyclability, highlighting the potential of LiRAP-based surface coatings for enhancing the performance and longevity of high-capacity cathodes in SSB systems.

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超越传统涂层：高压全固态电池用反钙钛矿熔融渗透

固态电池（SSBs）已成为下一代储能解决方案的有希望的候选者，特别是在电动汽车应用中。为了克服与界面稳定性和运行过程中电化学-机械降解相关的挑战，阴极活性材料（CAMs）保护表面涂层的开发至关重要。富锂反钙钛矿（lirap）表现出一系列独特的有益特性，特别是在室温下具有高离子部分电导率，使先进的涂层技术能够通过经济高效和环保的方法部署。在本工作中，利用低温和无溶剂的方法，研究了LiRAP涂层在层状富镍CAM （LiNi0.85Co0.1Mn0.05O2 (NCM85)）上的应用。通过显微镜分析和电化学性能评估来评估该方法的有效性。结果表明，循环性能有了显著改善，突出了基于lirap的表面涂层在提高SSB系统中高容量阴极的性能和寿命方面的潜力。

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来源期刊

ChemElectroChem ELECTROCHEMISTRY-

CiteScore

7.90

自引率

2.50%

发文量

515

审稿时长

1.2 months

期刊介绍： ChemElectroChem is aimed to become a top-ranking electrochemistry journal for primary research papers and critical secondary information from authors across the world. The journal covers the entire scope of pure and applied electrochemistry, the latter encompassing (among others) energy applications, electrochemistry at interfaces (including surfaces), photoelectrochemistry and bioelectrochemistry.