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Defect Strategy in Solid-State Lithium Batteries
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DOI：10.1002/smtd.202301162.png)
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摘要
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Solid-state lithium batteries (SSLBs) have great development prospects in high-security new energy fields, but face major challenges such as poor charge transfer kinetics, high interface impedance, and unsatisfactory cycle stability. Defect engineering is an effective method to regulate the composition and structure of electrodes and electrolytes, which plays a crucial role in dominating physical and electrochemical performance. It is necessary to summarize the recent advances regarding defect engineering in SSLBs and analyze the mechanism, thus inspiring future work. This review systematically summarizes the role of defects in providing storage sites/active sites, promoting ion diffusion and charge transport of electrodes, and improving structural stability and ionic conductivity of solid-state electrolytes. The defects greatly affect the electronic structure, chemical bond strength and charge transport process of the electrodes and solid-state electrolytes to determine their electrochemical performance and stability. Then, this review presents common defect fabrication methods and the specific role mechanism of defects in electrodes and solid-state electrolytes. At last, challenges and perspectives of defect strategies in high-performance SSLBs are proposed to guide future research. This review provides a systematic summary of the fundamental working principles of defects and their crucial role in solid-state lithium batteries (SSLBs). It also investigates various methods for manufacturing defects and elucidates the specific mechanisms. Meanwhile, challenges and perspectives for defect strategies in high-performance SSLBs are also highlighted to guide, offering profound insights and valuable guidance for future research endeavors.image
Keyword:
defect strategy
electrodes
ion conductivity
solid-state electrolytes
solid-state lithium battery
期刊
IF:
9.1
论文数:
4.3K
被引数:
2.2W
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