Improved Rate Performance of Lithium Sulfur Batteries by In-Situ Anchoring of Lithium Iodide in Carbon/Sulfur Cathode

Abstract Due to the low conductivity of sulfur and the dissolution of polysulfides, the research and application of lithium-sulfur (Li-S) batteries have encountered certain resistance. Increasing conductivity and introducing polarity into the sulfur host can effectively overcome these long-standing problems. Herein, We first prepared Co3W3C@ C@ CNTs / S material and used it in the cathode of lithium-sulfur batteries, The existence of carboxylated CNTs can form a conductive network, accelerate the transmission of electrons and improve the rate performance, and polar Co3W3C can form a strong interaction with polysulfide intermediates, effectively inhibiting its shuttle effect, improving the utilization of sulfur cathode electrodes, and improving the capacity and cycle stability. The Co3W3C@C@CNTs / S electrode material has a capacity of 1,093 mA h g-1 at a 0.1 A g− 1 and 482 mA h g-1 at 5 A g− 1. Even after 500 cycles of 2 A g− 1, the capacity of each cycle is only reduced by 0.08%. The excellent stability of this material can provide a new idea for the future development of lithium-sulfur batteries.

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Efficient polysulfide barrier of a graphene aerogel–carbon nanofibers–Ni network for high-energy-density lithium–sulfur batteries with ultrahigh sulfur content

Journal of Materials Chemistry A ◽

10.1039/c8ta08048h ◽

2018 ◽

Vol 6 (42) ◽

pp. 20926-20938 ◽

Cited By ~ 26

Author(s):

Yongzheng Zhang ◽

Ruochen Wang ◽

Weiqiang Tang ◽

Liang Zhan ◽

Shuangliang Zhao ◽

...

Keyword(s):

Energy Density ◽

Reversible Capacity ◽

High Energy ◽

High Energy Density ◽

Rate Performance ◽

Sulfur Cathode ◽

Graphene Aerogel ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur ◽

Modified Separator

The GA–CNFs–Ni modified separator endows the “double high” sulfur cathode (5–10 mg cm−2, 90%) with a stable reversible capacity and superior rate performance.

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Carbon-nanotube/sulfur cathode with in-situ assembled Si3N4/graphene interlayer for high-rate and long cycling-life lithium-sulfur batteries

Electrochimica Acta ◽

10.1016/j.electacta.2018.11.040 ◽

2019 ◽

Vol 296 ◽

pp. 155-164 ◽

Cited By ~ 13

Author(s):

Long Qu ◽

Pei Liu ◽

Peng Zhang ◽

Tao Wang ◽

Yikun Yi ◽

...

Keyword(s):

Carbon Nanotube ◽

High Rate ◽

Sulfur Cathode ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur ◽

Cycling Life

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In situ coating of Poly(3,4-ethylenedioxythiophene) on sulfur cathode for high performance lithium–sulfur batteries

Journal of Power Sources ◽

10.1016/j.jpowsour.2016.09.092 ◽

2016 ◽

Vol 332 ◽

pp. 72-78 ◽

Cited By ~ 19

Author(s):

Jongchan Song ◽

Hyungjun Noh ◽

Jinhong Lee ◽

In-Wook Nah ◽

Won-Il Cho ◽

...

Keyword(s):

High Performance ◽

Sulfur Cathode ◽

Lithium Sulfur Batteries ◽

In Situ Coating ◽

Lithium Sulfur

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In situ protection of a sulfur cathode and a lithium anode via adopting a fluorinated electrolyte for stable lithium-sulfur batteries

Science China Materials ◽

10.1007/s40843-020-1621-8 ◽

2021 ◽

Author(s):

Xue Chen ◽

Haijin Ji ◽

Weilun Chen ◽

Jingyi Wu ◽

Fei Hu ◽

...

Keyword(s):

Sulfur Cathode ◽

Lithium Anode ◽

Lithium Sulfur Batteries ◽

Fluorinated Electrolyte ◽

Lithium Sulfur

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Boosting Rate Performance of Li–S Batteries under High-Mass-Loading Sulfur based on Hierarchical NCNT@Co-CoP Nanowires Integrated Electrode

Journal of Materials Chemistry A ◽

10.1039/d1ta00959a ◽

2021 ◽

Author(s):

Jianbo Li ◽

Wenfu Xie ◽

Shimeng Zhang ◽

Simin Xu ◽

Mingfei Shao

Keyword(s):

Storage Systems ◽

High Mass ◽

Mass Loading ◽

Rate Performance ◽

Next Generation ◽

Practical Application ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

Lithium−sulfur batteries (Li–S) has been gradual becoming one of the most promising next-generation storage systems, but its practical application is still limited by the extremely low S loading as well...

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