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A novel battery scheme: Coupling nanostructured phosphorus anodes with lithium sulfide cathodes
Nano Research ( IF 9.9 ) Pub Date : 2020-03-02 , DOI: 10.1007/s12274-020-2645-8
David Sichen Wu , Guangmin Zhou , Eryang Mao , Yongming Sun , Bofei Liu , Li Wang , Jiangyan Wang , Feifei Shi , Yi Cui

Abstract

Lithium-ion batteries are approaching their theoretical limit and can no longer keep up with the increasing demands of human society. Lithium-sulfur batteries, with a high theoretical specific energy, are promising candidates for next generation energy storage. However, the use of Li metal in Li-S batteries compromises both safety and performance, enabling dendrite formation and causing fast capacity degradation. Previous studies have probed alternative battery systems to replace the metallic Li in Li-S system, such as a Si/Li2S couple, with limited success in performance. Recently, there is a focus on red P as a favorable anode material to host Li. Here, we establish a novel battery scheme by utilizing a P/C nanocomposite anode and pairing it with a Li2S coated carbon nanofiber cathode. We find that red P anode can be compatible in ether-based electrolyte systems and can be successfully coupled to a Li2S cathode. Our proof of concept full-cell displays remarkable specific capacity, rate and cycling performances. We expect our work will provide a useful alternative system and valuable insight in the quest for next generation energy storage devices.



中文翻译:

一种新颖的电池方案:将纳米结构的磷阳极与硫化锂阴极耦合

摘要

锂离子电池已接近其理论极限,已无法适应人类社会日益增长的需求。具有高理论比能量的锂硫电池是下一代储能的有希望的候选者。但是,在Li-S电池中使用金属锂会损害安全性和性能,从而形成枝晶并导致容量快速下降。先前的研究已经探究了替代电池系统来代替Li-S系统中的金属Li(例如Si / Li 2 S对),但在性能上取得了有限的成功。近来,人们关注红色P作为承载Li的有利阳极材料。在这里,我们通过利用P / C纳米复合阳极并将其与Li 2配对来建立一种新颖的电池方案S涂层碳纳米纤维阴极。我们发现,红色P阳极可以与基于醚的电解质系统兼容,并且可以成功地耦合到Li 2 S阴极。我们的概念证明全电池展示了非凡的比容量,速率和循环性能。我们希望我们的工作将为寻求下一代储能设备提供有用的替代系统和宝贵的见识。

更新日期:2020-03-02
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