Review—Li Metal Anode in Working Lithium-Sulfur Batteries

By Xin‐Bing Cheng, Jia-qi Huang, Qiang Zhang. 2018

239 citations recorded by the source corpus.

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. behavior with solid-state elec- trolyte and rationally design hybrid solid electrolyte. (6) The current researches of Li − S batteries are mostly based on the coin-cell format with a small current density, which conceals the problems resulting from Li metal anode. Some conclusions based on the small coin-cell format are inaccurate when they are applied to pouch cells. Evalua- tions based on the pouch-cell format seem more reliable for practical Li − S batteries.

Subfields: Automotive Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/c8b583dd497810c0f6c9405057e63090624ddb1b

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In Automotive Engineering

1. Qiang Zhang
2. Xue‐Qiang Zhang
3. Chong Yan
4. Bo‐Quan Li
5. Jiaqi Huang
6. Xin‐Bing Cheng
7. Jia-qi Huang
8. Hong‐Jie Peng

In Electrical and Electronic Engineering

1. Qiang Zhang
2. Xue‐Qiang Zhang
3. Chong Yan
4. Bo‐Quan Li
5. Jiaqi Huang
6. Peng Chen
7. Yu-Xing Yao
8. Xin‐Bing Cheng

Citations in the corpus

• A compact inorganic layer for robust anode protection in lithium‐sulfur batteries (2020, background): “A key prerequisite for a Li anode protection layer in Li-S batteries is that Li must be protected in the presence of Li polysulfides compared with the battery systems adopting insoluble intercalation cathodes.(25-27) Li polysulfides react with Li and involve into SEI constituents, which complexes th”