scholarly journals Excellent Lithium Metal Anode Performance via In Situ Interfacial Layer Induced by Li6.75La3Zr1.75Ta0.25O12@Amorphous Li3OCl Composite Solid Electrolyte

Author(s):  
Yijun Tian ◽  
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.


2019 ◽  
Vol 7 (40) ◽  
pp. 23173-23181 ◽  
Author(s):  
Zhaoshuai Zhang ◽  
Long Zhang ◽  
Yanyan Liu ◽  
Tingting Yang ◽  
Zhiwen Wang ◽  
...  

PO43−–ester interactions realize dendrite-free Li deposition in PCL–LAGP, evidenced by galvanostatic cycling and in situ TEM observations. The corresponding battery achieves high coulombic efficiency ∼100% and a rate capability ≥10C.


2021 ◽  
Vol 9 (15) ◽  
pp. 9826-9836
Author(s):  
Hongli Xu ◽  
Wei Ye ◽  
Qingrong Wang ◽  
Bing Han ◽  
Jun Wang ◽  
...  

The HNT and comb-like PCL-based composite solid electrolyte enables LMBs with extremely stable cycling and high safety.


2021 ◽  
pp. 129911
Author(s):  
Saisai Li ◽  
Yun Huang ◽  
Wenhao Ren ◽  
Xing Li ◽  
Mingshan Wang ◽  
...  

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