Review-Li Metal Anode in Working Lithium-Sulfur Batteries
Review-Li Metal Anode in Working Lithium-Sulfur Batteries
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DOI：
10.1149/2.0111801jes
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发表时间：
2018-01-01
影响因子：
3.9
通讯作者：
Zhang, Qiang
中科院分区：
文献类型：
--
作者：
Cheng, Xin-Bing;Huang, Jia-Qi;Zhang, Qiang
锂硫电池由于具有2600 Wh kg(-1)的高理论能量密度，被认为是有前景的下一代储能器件。然而，锂硫电池的实际应用面临着一些障碍，包括硫利用率低和寿命差，部分原因是锂硫电池中多硫化锂的穿梭和锂枝晶的生长。抑制锂枝晶的生长不仅是安全高效的锂金属负极的必要步骤，也是高库仑效率的高容量电池的必要步骤。在此，我们回顾了富含多硫化物环境中的锂金属阳极保护，相对于大多数关于锂金属阳极的评论，没有考虑多硫化物在锂金属电池中的影响。首先，强调了锂金属负极问题在锂硫电池中的重要性和困境，旨在引起人们对锂金属负极保护的关注。特别关注富含多硫化物的锂硫电池中锂金属负极的表面化学。接下来，提出了稳定固体电解质界面和保护锂金属负极的策略。最后，对锂硫电池中锂金属负极的当前局限性进行了总结和展望，并提出了未来的研究方向。 (C) 作者 2017 年。ECS 出版。
Due to the high theoretical energy density of 2600 Wh kg(-1), lithium-sulfur batteries are strongly regarded as the promising next-generation energy storage devices. However, the practical applications of lithium-sulfur batteries are challenged by several obstacles, including the low sulfur utilization and poor lifespan, which are partly attributed to the shuttle of lithium polysulfides and lithium dendrite growth in working lithium-sulfur batteries. Suppressing lithium dendrite growth is a necessary step not only for a safe and efficient Li metal anode, but also for a high capacity cell with a high Coulombic efficiency. Herein we review the lithium metal anode protection in a polysulfide-rich environment, relative to most reviews on lithium metal anode without considering the effect of lithium polysulfides in lithium metal batteries. Firstly, the importance and dilemma of Li metal anode issues in lithium-sulfur batteries are underscored, aiming to arouse the attentions to Li metal anode protection. Specific attentions are paid to the surface chemistry of Li metal anode in a polysulfide-rich lithium-sulfur battery. Next, the proposed strategies to stabilize solid electrolyte interface and protect Li metal anode are included. Finally, a general conclusion and a perspective on the current limitations, as well as recommended future research directions of Li metal anode in lithium-sulfur batteries are presented. (C) The Author(s) 2017. Published by ECS.