Revamping Lithium–Sulfur Batteries for High Cell‐Level Energy Density by Synergistic Utilization of Polysulfide Additives and Artificial Solid‐Electrolyte Interphase Layers

2021 ◽  
pp. 2104246
Author(s):  
Peng Wu ◽  
Mingxin Dong ◽  
Jian Tan ◽  
Dongyun Aiden Kang ◽  
Choongho Yu
Keyword(s):  
Energy Density ◽  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Level Energy ◽  
High Cell ◽  
Cell Level ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Cathode-Supported All-Solid-State Lithium–Sulfur Batteries with High Cell-Level Energy Density

2019 ◽  
Vol 4 (5) ◽  
pp. 1073-1079 ◽  
Author(s):  
Ruochen Xu ◽  
Jie Yue ◽  
Sufu Liu ◽  
Jiangping Tu ◽  
Fudong Han ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Level Energy ◽  
High Cell ◽  
Cell Level ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

scholarly journals A chemically stabilized sulfur cathode for lean electrolyte lithium sulfur batteries

2020 ◽  
Vol 117 (26) ◽  
pp. 14712-14720 ◽  
Author(s):  
Chao Luo ◽  
Enyuan Hu ◽  
Karen J. Gaskell ◽  
Xiulin Fan ◽  
Tao Gao ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Carbon Matrix ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Sulfur Batteries ◽  
Low Sulfur ◽  
Lithium Sulfur

Lithium sulfur batteries (LSBs) are promising next-generation rechargeable batteries due to the high gravimetric energy, low cost, abundance, nontoxicity, and high sustainability of sulfur. However, the dissolution of high-order polysulfide in electrolytes and low Coulombic efficiency of Li anode require excess electrolytes and Li metal, which significantly reduce the energy density of LSBs. Quasi-solid-state LSBs, where sulfur is encapsulated in the micropores of carbon matrix and sealed by solid electrolyte interphase, can operate under lean electrolyte conditions, but a low sulfur loading in carbon matrix (<40 wt %) and low sulfur unitization (<70%) still limit the energy density in a cell level. Here, we significantly increase the sulfur loading in carbon to 60 wt % and sulfur utilization to ∼87% by dispersing sulfur in an oxygen-rich dense carbon host at a molecular level through strong chemical interactions of C–S and O–S. In an all-fluorinated organic lean electrolyte, the C/S cathode experiences a solid-state lithiation/delithiation reaction after the formation of solid electrolyte interphase in the first deep lithiation, completely avoiding the shuttle reaction. The chemically stabilized C/S composite retains a high reversible capacity of 541 mAh⋅g−1(based on the total weight of the C/S composite) for 200 cycles under lean electrolyte conditions, corresponding to a high energy density of 974 Wh⋅kg−1. The superior electrochemical performance of the chemical bonding-stabilized C/S composite renders it a promising cathode material for high-energy and long-cycle-life LSBs.

The effect of a solid electrolyte interphase on the mechanism of operation of lithium–sulfur batteries

2015 ◽  
Vol 3 (39) ◽  
pp. 19873-19883 ◽  
Author(s):  
E. Markevich ◽  
G. Salitra ◽  
A. Rosenman ◽  
Y. Talyosef ◽  
F. Chesneau ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Surface Films ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

The formation of surface films on sulfur–carbon cathodes is responsible for a quasi-solid-state mechanism of sulfur lithiation in the micropores.

Shielding Polysulfide Intermediates by an Organosulfur‐Containing Solid Electrolyte Interphase on the Lithium Anode in Lithium–Sulfur Batteries

2020 ◽  
Vol 32 (37) ◽  
pp. 2003012 ◽  
Author(s):  
Jun‐Yu Wei ◽  
Xue‐Qiang Zhang ◽  
Li‐Peng Hou ◽  
Peng Shi ◽  
Bo‐Quan Li ◽  
...  
Keyword(s):  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Lithium Anode ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur
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