Ultrafine nano-sulfur particles anchored on in situ exfoliated graphene for lithium–sulfur batteries

2017 ◽  
Vol 5 (19) ◽  
pp. 9412-9417 ◽  
Author(s):  
Zhaoling Ma ◽  
Li Tao ◽  
Dongdong Liu ◽  
Zhen Li ◽  
Yiqiong Zhang ◽  
...  
Keyword(s):  
Cycle Life ◽  
Dbd Plasma ◽  
Graphene Composite ◽  
Exfoliated Graphene ◽  
Lithium Sulfur Batteries ◽  
One Step ◽  
Lithium Sulfur

Ultrafine sulfur/graphene composite was synthesized in one step with the assistance of DBD plasma and showed enhanced cycle life in Li–S batteries.

One-pot pyrolysis of lithium sulfate and graphene nanoplatelet aggregates: in situ formed Li2S/graphene composite for lithium–sulfur batteries

Nanoscale ◽  
2015 ◽  
Vol 7 (34) ◽  
pp. 14385-14392 ◽  
Author(s):  
Zhe Li ◽  
Shiguo Zhang ◽  
Ce Zhang ◽  
Kazuhide Ueno ◽  
Tomohiro Yasuda ◽  
...  
Keyword(s):  
Low Cost ◽  
High Capacity ◽  
Lithium Sulfate ◽  
One Pot ◽  
Graphene Nanoplatelet ◽  
Graphene Composite ◽  
Lithium Sulfide ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Lithium sulfide/graphene composite as high capacity cathode material is facilely obtained by one-pot pyrolysis of graphene nanoplatelet aggregates and low-cost lithium sulfate.

An in situ encapsulation approach for polysulfide retention in lithium–sulfur batteries

2020 ◽  
Vol 8 (14) ◽  
pp. 6902-6907 ◽  
Author(s):  
Y. X. Ren ◽  
H. R. Jiang ◽  
C. Xiong ◽  
C. Zhao ◽  
T. S. Zhao
Keyword(s):  
Rate Capability ◽  
Carbon Composite ◽  
Cycle Life ◽  
Composite Cathodes ◽  
Lithium Sulfur Batteries ◽  
A Minor ◽  
Lithium Sulfur

An in situ encapsulation strategy is adopted for protecting sulfur/carbon composite cathodes, extending the cycle life with a minor sacrifice in the rate capability.

Sulfur synchronously electrodeposited onto exfoliated graphene sheets as a cathode material for advanced lithium–sulfur batteries

2015 ◽  
Vol 3 (32) ◽  
pp. 16513-16519 ◽  
Author(s):  
Liyuan Zhang ◽  
Hui Huang ◽  
Hailin Yin ◽  
Yang Xia ◽  
Jianmin Luo ◽  
...  
Keyword(s):  
Cathode Material ◽  
Graphene Sheets ◽  
Exfoliated Graphene ◽  
Novel Synthesis ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

A novel synthesis of graphene–sulfur composites is designed by electrolytic exfoliation of graphite coupled with in situ electrodeposition of sulfur.

One step production of in situ nitrogen doped mesoporous carbon confined sulfur for lithium–sulfur batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (40) ◽  
pp. 31629-31636 ◽  
Author(s):  
Yajin Hao ◽  
Zhiqiang Shi ◽  
Jing Wang ◽  
Qiang Xu
Keyword(s):  
Specific Surface ◽  
Pore Volume ◽  
Mesoporous Carbon ◽  
High Specific Surface Area ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
One Step ◽  
Large Pore Volume ◽  
Lithium Sulfur

Nitrogen doped mesoporous carbon (NMC) with high specific surface area, large pore volume and stable nitrogen content has been prepared by in situ doping through one step carbonization to immobilize sulfur for lithium–sulfur batteries.

An in situ chemically and physically confined sulfur–polymer composite for lithium–sulfur batteries with carbonate-based electrolytes

2018 ◽  
Vol 54 (100) ◽  
pp. 14093-14096 ◽  
Author(s):  
Jingjing Ma ◽  
Guangri Xu ◽  
Yuanchao Li ◽  
Chuangye Ge ◽  
Xiaobo Li
Keyword(s):  
Polymer Composite ◽  
Cycling Stability ◽  
Lithium Sulfur Batteries ◽  
One Step ◽  
Lithium Sulfur

A sulfur–polymer composite synthesized by one-step thermal sulfurization of PANI is proposed to show excellent long-term cycling stability in carbonate-based electrolytes.

Ad hoc solid electrolyte on acidized carbon nanotube paper improves cycle life of lithium–sulfur batteries

2017 ◽  
Vol 10 (12) ◽  
pp. 2544-2551 ◽  
Author(s):  
Guiyin Xu ◽  
Akihiro Kushima ◽  
Jiaren Yuan ◽  
Hui Dou ◽  
Weijiang Xue ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Solid Electrolyte ◽  
Ad Hoc ◽  
Cycling Performance ◽  
Cycle Life ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

The in situ polymerized solid barrier stops sulfur transport while still allowing bidirectional Li+ transport, alleviating the shuttle effect and increasing the cycling performance.

Cellulose Separators with Integrated Carbon Nanotube Interlayers for Lithium-Sulfur Batteries: An Investigation into the Complex Interplay Between Cell Components

2019 ◽  
Author(s):  
Yu-Chuan Chien ◽  
Ruijun Pan ◽  
Ming-Tao Lee ◽  
Leif Nyholm ◽  
Daniel Brandell ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Solid Electrolyte Interphase ◽  
Holistic Approach ◽  
Cycle Life ◽  
Complex Interplay ◽  
Positive Electrodes ◽  
Lithium Sulfur Batteries ◽  
Cell Components ◽  
Redox Shuttle ◽  
Lithium Sulfur

This work aims to address two major roadblocks in the development of lithium-sulfur (Li-S) batteries: the inefficient deposition of Li on the metallic Li electrode and the parasitic "polysulfide redox shuttle". These roadblocks are here approached, respectively, by the combination of a cellulose separator with a cathode-facing conductive porous carbon interlayer, based on their previously reported individual benefits. The cellulose separator increases cycle life by 33%, and the interlayer by a further 25%, in test cells with positive electrodes with practically relevant specifications and a relatively low electrolyte/sulfur (E/S) ratio. Despite the prolonged cycle life, the combination of the interlayer and cellulose separator increases the polysulfide shuttle current, leading to reduced Coulombic efficiency. Based on XPS analyses, the latter is ascribed to a change in the composition of the solid electrolyte interphase (SEI) on Li. Meanwhile, electrolyte decomposition is found to be slower in cells with cellulose-based separators, which explains their longer cycle life. These counterintuitive observations demonstrate the complicated interactions between the cell components in the Li-S system and how strategies aiming to mitigate one unwanted process may exacerbate another. This study demonstrates the value of a holistic approach to the development of Li-S chemistry.<br>

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