Electro‐Chemo‐Mechanical Failure Mechanisms of Solid‐State Electrolytes

Author:

Wu Quan12,Xiong Shizhao2,Li Fujun13,Matic Aleksandar2ORCID

Affiliation:

1. Renewable Energy Conversion and Storage Center (RECAST) Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Nankai University 300071 Tianjin P. R. China

2. Department of Physics Chalmers University of Technology S41296 Göteborg Sweden

3. Haihe Laboratory of Sustainable Chemical Transformations 300192 Tianjin P. R. China

Abstract

AbstractSolid‐state lithium‐metal batteries (SSLMBs) are considered as the next‐generation energy storage systems due to their high theoretical energy density and safety. However, the practical deployment of SSLMBs has been impeded by the failure of solid‐state electrolytes (SSEs) which is indicated by the increased impedance, elevated polarization, and capacity degradation. The failure is commonly a result of lithium (Li) dendrite growth and propagation, inactive Li generation, unstable interface formation, void and pore formation, and crack infiltration. The failure processes can be divided into electric failure, (electro)chemical failure, and mechanical failure based on the different mechanisms. The systematical understanding of SSEs failure is crucial for the development of SSEs. Therefore, this review comprehensively summarizes the details of the three SSEs failure to provide new insights for future studies, shedding light on the design of SSLMBs with high energy density, safety, and cycling stability.

Funder

National Natural Science Foundation of China

Energimyndigheten

Publisher

Wiley

Subject

Electrochemistry,Electrical and Electronic Engineering,Energy Engineering and Power Technology

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