Multifunctional Metal Phosphides as Superior Host Materials for Advanced Lithium-Sulfur Batteries,Chemistry - A European Journal

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Multifunctional Metal Phosphides as Superior Host Materials for Advanced Lithium-Sulfur Batteries
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2021-07-19 , DOI: 10.1002/chem.202101873
Zhuosen Wang ₁ , Xijun Xu ₂ , Zhengbo Liu ₂ , Dechao Zhang ₂ , Jujun Yuan ₃ , Jun Liu _{2,

3}

Affiliation

For the past few years, a new generation of energy storage systems with large theoretical specific capacity has been urgently needed because of the rapid development of society. Lithium–sulfur (Li−S) batteries are regarded as one of the most promising candidates for novel battery systems, since their resurgence at the end of the 20th century Li−S batteries have attracted ever more attention, attributed to their notably high theoretical energy density of 2600 W h kg⁻¹, which is almost five times larger than that of commercial lithium-ion batteries (LIBs). One of the determining factors in Li−S batteries is how to design/prepare the sulfur cathode. For the sulfur host, the major technical challenge is avoiding the shuttling effect that is caused by soluble polysulfides during the reaction. In past decades, though the sulfur cathode has developed greatly, there are still some enormous challenges to be conquered, such as low utilization of S, rapid decay of capacity, and poor cycle life. This article spotlights the recent progress and foremost findings in improving the performance of Li−S batteries by employing multifunctional metal phosphides as host materials. The current state of development of the sulfur electrode of Li−S batteries is summarized by emphasizing the relationship between the essential properties of metal phosphide-based hybrid nanomaterials, the chemical reaction with lithium polysulfides and the latter′s influence on electrochemical performance. Finally, trends in the development and practical application of Li−S batteries are also pointed out.

中文翻译：

多功能金属磷化物作为先进锂硫电池的优质主体材料

近年来，随着社会的快速发展，迫切需要具有大理论比容量的新一代储能系统。锂硫 (Li-S) 电池被认为是新型电池系统最有前途的候选者之一，因为它们在 20 世纪末的复兴引起了越来越多的关注，这归因于其显着的理论能量密度为 2600 W h kg ^-1，几乎是商用锂离子电池 (LIB) 的五倍。Li-S 电池的决定因素之一是如何设计/制备硫正极。对于硫主体，主要的技术挑战是避免在反应过程中由可溶性多硫化物引起的穿梭效应。在过去的几十年里，虽然硫正极得到了很大的发展，但仍然存在一些巨大的挑战有待克服，如硫利用率低、容量衰减快、循环寿命差等。本文重点介绍了通过使用多功能金属磷化物作为主体材料来提高 Li-S 电池性能的最新进展和最重要的发现。通过强调金属磷化物基杂化纳米材料的基本性质、与多硫化锂的化学反应以及后者对电化学性能的影响之间的关系，总结了锂硫电池硫电极的发展现状。最后，还指出了锂硫电池的发展和实际应用趋势。

更新日期：2021-09-24

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