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Interface engineering strategies to enable stable Ni-rich cathodes in all-solid-state batteries: A review
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DOI：10.1016/j.jechem.2026.04.066.png)
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Abstract
En 中文
The growing demand for safe, high-energy storage in electric transportation and portable electronics has accelerated interest in all-solid-state lithium batteries (ASSLBs). Solid electrolytes, particularly sulfide-based systems, offer high ionic conductivity and mechanical deformability, enabling robust and chemically stable interfaces with high-voltage nickel (Ni)-rich layered cathodes. However, increasing the Ni content amplifies issues such as surface degradation, microcracking, oxygen release, space-charge-layer formation, and interfacial resistance by compromising long-term cycling stability. Sulfide electrolytes suffer from an intrinsically narrow electrochemical stability window and chemical incompatibility with oxide cathodes, resulting in interfacial reactions and progressive contact deterioration. Therefore, surface coatings have emerged as a crucial strategy for stabilizing the cathode-electrolyte interface by suppressing decomposition, regulating Li+ transport, and mitigating coupled electro-chemo-mechanical degradation. This review summarizes the fundamental challenges at Ni-rich cathode/sulfide-electrolyte interfaces, highlights recent advances in coating materials and interfacial engineering, and outlines prospective pathways toward scalable, durable, and high-performance ASSLBs.
Keywords:
Ni-rich cathodes
sulfide electrolytes
interfacial engineering
all-solid-state batteries
surface coatings
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6.0K
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4.5W
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