Lithium metal protection through in-situ formed solid electrolyte interphase in lithium-sulfur batteries: The role of polysulfides on lithium anode

2016 ◽  
Vol 327 ◽  
pp. 212-220 ◽  
Author(s):  
Chong Yan ◽  
Xin-Bing Cheng ◽  
Chen-Zi Zhao ◽  
Jia-Qi Huang ◽  
Shu-Ting Yang ◽  
...  
2020 ◽  
Vol 32 (37) ◽  
pp. 2003012 ◽  
Author(s):  
Jun‐Yu Wei ◽  
Xue‐Qiang Zhang ◽  
Li‐Peng Hou ◽  
Peng Shi ◽  
Bo‐Quan Li ◽  
...  

2017 ◽  
Vol 363 ◽  
pp. 193-198 ◽  
Author(s):  
Yongling An ◽  
Zhen Zhang ◽  
Huifang Fei ◽  
Xiaoyan Xu ◽  
Shenglin Xiong ◽  
...  

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Wei Guo ◽  
Wanying Zhang ◽  
Yubing Si ◽  
Donghai Wang ◽  
Yongzhu Fu ◽  
...  

AbstractThe interfacial instability of the lithium-metal anode and shuttling of lithium polysulfides in lithium-sulfur (Li-S) batteries hinder the commercial application. Herein, we report a bifunctional electrolyte additive, i.e., 1,3,5-benzenetrithiol (BTT), which is used to construct solid-electrolyte interfaces (SEIs) on both electrodes from in situ organothiol transformation. BTT reacts with lithium metal to form lithium 1,3,5-benzenetrithiolate depositing on the anode surface, enabling reversible lithium deposition/stripping. BTT also reacts with sulfur to form an oligomer/polymer SEI covering the cathode surface, reducing the dissolution and shuttling of lithium polysulfides. The Li–S cell with BTT delivers a specific discharge capacity of 1,239 mAh g−1 (based on sulfur), and high cycling stability of over 300 cycles at 1C rate. A Li–S pouch cell with BTT is also evaluated to prove the concept. This study constructs an ingenious interface reaction based on bond chemistry, aiming to solve the inherent problems of Li–S batteries.


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