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Towards high-performance solid-state Li-S batteries: from fundamental understanding to engineering design.
Chemical Society Reviews ( IF 40.4 ) Pub Date : 2020-03-02 , DOI: 10.1039/c9cs00635d
Xiaofei Yang 1 , Jing Luo 1 , Xueliang Sun 1
Affiliation  

Solid-state lithium-sulfur batteries (SSLSBs) with high energy densities and high safety have been considered among the most promising energy storage devices to meet the demanding market requirements for electric vehicles. However, critical challenges such as lithium polysulfide shuttling effects, mismatched interfaces, Li dendrite growth, and the gap between fundamental research and practical applications still hinder the commercialization of SSLSBs. This review aims to combine the fundamental and engineering perspectives to seek rational design parameters for practical SSLSBs. The working principles, constituent components, and practical challenges of SSLSBs are reviewed. Recent progress and approaches to understand the interfacial challenges via advanced characterization techniques and density functional theory (DFT) calculations are summarized and discussed. A series of design parameters including sulfur loading, electrolyte thickness, discharge capacity, discharge voltage, and cathode sulfur content are systematically analyzed to study their influence on the gravimetric and volumetric energy densities of SSLSB pouch cells. The advantages and disadvantages of recently reported SSLSBs are discussed, and potential strategies are provided to address the shortcomings. Finally, potential future directions and prospects in SSLSB engineering are examined.

中文翻译:

迈向高性能固态锂电池:从基本了解到工程设计。

具有高能量密度和高安全性的固态锂硫电池(SSLSB)已被认为是最有前途的储能设备,可以满足电动汽车的苛刻市场需求。然而,诸如多硫化锂的穿梭效应,不匹配的界面,锂枝晶的生长以及基础研究与实际应用之间的差距等关键挑战仍然阻碍了SSLSB的商业化。本文旨在结合基础和工程学的观点,为实用的SSLSB寻找合理的设计参数。回顾了SSLSB的工作原理,组成部分和实际挑战。总结和讨论了通过先进的表征技术和密度泛函理论(DFT)计算来了解界面挑战的最新进展和方法。系统分析了包括硫负载,电解质厚度,放电容量,放电电压和阴极硫含量在内的一系列设计参数,以研究它们对SSLSB袋式电池的重量和体积能密度的影响。讨论了最近报告的SSLSB的优缺点,并提供了解决这些缺点的潜在策略。最后,研究了SSLSB工程的潜在未来方向和前景。对阴极硫含量和阴极硫含量进行了系统分析,以研究其对SSLSB袋式电池重量和体积能量密度的影响。讨论了最近报告的SSLSB的优缺点,并提供了解决这些缺点的潜在策略。最后,研究了SSLSB工程的潜在未来方向和前景。对阴极硫含量和阴极硫含量进行了系统分析,以研究其对SSLSB袋式电池重量和体积能量密度的影响。讨论了最近报告的SSLSB的优缺点,并提供了解决这些缺点的潜在策略。最后,研究了SSLSB工程的潜在未来方向和前景。
更新日期:2020-04-24
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