Hollow polyaniline sphere@sulfur composites for prolonged cycling stability of lithium–sulfur batteries

2014 ◽  
Vol 2 (27) ◽  
pp. 10350-10354 ◽  
Author(s):  
Guoqiang Ma ◽  
Zhaoyin Wen ◽  
Jun Jin ◽  
Yan Lu ◽  
Xiangwei Wu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Volume Expansion ◽  
Cycling Stability ◽  
Sulfur Cathode ◽  
Shuttle Effect ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Sulfur cathode with excellent electrochemical performance based on hollow PANI spheres, which can suppress the shuttle effect and buffer the volume expansion.

scholarly journals A Novel Hierarchically Porous Polypyrrole Sphere Modified Separator for Lithium-Sulfur Batteries

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1344 ◽  
Author(s):  
Baoe Li ◽  
Zhenghao Sun ◽  
Yan Zhao ◽  
Zhumabay Bakenov
Keyword(s):  
High Capacity ◽  
Reversible Capacity ◽  
Sulfur Cathode ◽  
Hierarchically Porous ◽  
Shuttle Effect ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Sulfur Battery ◽  
Lithium Sulfur ◽  
Modified Separator

The commercialization of Lithium-sulfur batteries was limited by the polysulfide shuttle effect, and modifying the routine separator was an effective method to solve this problem. In this work, a novel hierarchically porous polypyrrole sphere (PPS) was successfully prepared by using silica as hard-templates. As-prepared PPS was slurry-coated on the separator, which could reduce the polarization phenomenon of the sulfur cathode, and efficiently immobilize polysulfides. As expected, high sulfur utilization was achieved by suppressing the shuttle effect. When tested in the lithium-sulfur battery, it exhibited a high capacity of 855 mAh·g−1 after 100 cycles at 0.2 C, and delivered a reversible capacity of 507 mAh·g−1 at 3 C, showing excellent electrochemical performance.

scholarly journals Co-W Bimetallic Carbides as Sulfur Host for High-Performance Lithium–Sulfur Batteries

2021 ◽  
Author(s):  
Dongke Zhang ◽  
Ting Huang ◽  
Pengfei Zhao ◽  
Ze Zhang ◽  
Xingtao Qi ◽  
...  
Keyword(s):  
High Performance ◽  
Conductive Network ◽  
Rate Performance ◽  
Cycle Stability ◽  
Sulfur Cathode ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur ◽  
Excellent Stability

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.

Flexible freestanding sandwich-structured sulfur cathode with superior performance for lithium–sulfur batteries

2014 ◽  
Vol 2 (23) ◽  
pp. 8623-8627 ◽  
Author(s):  
Jiangxuan Song ◽  
Zhaoxin Yu ◽  
Terrence Xu ◽  
Shuru Chen ◽  
Hiesang Sohn ◽  
...  
Keyword(s):  
Rate Capability ◽  
Cycling Stability ◽  
Superior Performance ◽  
Sulfur Cathode ◽  
Lithium Sulfur Batteries ◽  
Excellent Cycling Stability ◽  
Sulfur Cathodes ◽  
Areal Capacity ◽  
Lithium Sulfur

Flexible freestanding sandwich-structured sulfur cathodes are developed for lithium–sulfur batteries, which exhibit excellent cycling stability and rate capability. A high areal capacity of ∼4 mA h cm−2 is also demonstrated based on this new cathode configuration.

Discarded cigarette filter-derived hierarchically porous carbon@graphene composites for lithium–sulfur batteries

2019 ◽  
Vol 7 (8) ◽  
pp. 3558-3562 ◽  
Author(s):  
Hongbin Xu ◽  
Yang Liu ◽  
Qianyun Bai ◽  
Renbing Wu
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
Mesoporous Carbon ◽  
Cigarette Filter ◽  
Hierarchically Porous ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
High Sulfur Loading

Trash to treasure: discarded cigarette filters have been utilized to fabricate hierarchical macro–micro–mesoporous carbon@graphene composites, which enable high sulfur loading and confine the dissolution of lithium polysulfides, and thus exhibit an excellent electrochemical performance in Li–S batteries.

A new cathode material synthesized by a thiol-modified metal–organic framework (MOF) covalently connecting sulfur for superior long-cycling stability in lithium–sulfur batteries

2019 ◽  
Vol 7 (42) ◽  
pp. 24515-24523 ◽  
Author(s):  
Xu Liu ◽  
Shi Wang ◽  
Ailian Wang ◽  
Zhinan Wang ◽  
Jie Chen ◽  
...  
Keyword(s):  
Cathode Material ◽  
Metal Organic Framework ◽  
Cycling Stability ◽  
Sulfur Cathode ◽  
Lithium Sulfur Batteries ◽  
Metal Organic ◽  
First Time ◽  
Lithium Sulfur ◽  
Organic Framework

A stabilized sulfur cathode with CNT@MOF covalently connected with sulfur was fabricated for the first time.

Rational design of exfoliated 1T MoS2@CNT-based bifunctional separators for lithium sulfur batteries

2017 ◽  
Vol 5 (45) ◽  
pp. 23909-23918 ◽  
Author(s):  
Y. C. Jeong ◽  
J. H. Kim ◽  
S. H. Kwon ◽  
J. Y. Oh ◽  
J. Park ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Rational Design ◽  
Tandem Configuration ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

1T exfoliated MoS2@CNT-based bifunctional separators in a tandem configuration delivered excellent electrochemical performance, and rational guidelines for preparing bifunctional separators for lithium sulfur batteries were suggested.

Enhancing Polysulfides Confining and Converting in Meso-/microporous Core-shelled MoC/NC Microspheres for Lithium-Sulfur Batteries

2021 ◽  
Author(s):  
Wanli Li ◽  
Xiangfeng Jin ◽  
Liangping Xiao ◽  
XINGYUN Li ◽  
Qingchi Xu ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Volume Expansion ◽  
Sulfur Cathode ◽  
Lithium Sulfur Batteries ◽  
Sulfur Hosts ◽  
Lithium Sulfur ◽  
Carbon Based

Since porous carbon-based materials are employed as sulfur hosts, the problems of insulating nature and volume expansion during lithiation of the sulfur cathode in lithium-sulfur (Li-S) batteries have been overcome...

Cubic MnSe2 microcube enabling high-performance sulfur cathode for lithium-sulfur batteries

2021 ◽  
Author(s):  
Jian Bao ◽  
Xin-Yang Yue ◽  
Rui-Jie Luo ◽  
Yong-Ning Zhou
Keyword(s):  
Strong Interaction ◽  
High Performance ◽  
Sulfur Cathode ◽  
Shuttle Effect ◽  
Lithium Polysulfide ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

Cubic MnSe2 microcubes are introduced into sulfur cathodes to prevent the shuttle effect of lithium polysulfide through binding with polysulfide via the strong interaction between Se and S, thus alleviate...

A high tenacity electrode by assembly of a soft sorbent and a hard skeleton for lithium–sulfur batteries

2017 ◽  
Vol 5 (43) ◽  
pp. 22459-22464 ◽  
Author(s):  
Xiaonan Tang ◽  
Zhenhua Sun ◽  
Ji Liang ◽  
Jinping Zhao ◽  
Hui-Ming Cheng ◽  
...  
Keyword(s):  
Composite Structure ◽  
Volume Expansion ◽  
Sulfur Cathode ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

The volume expansion of a sulfur cathode can be accommodated by fabricating a composite structure with a soft sorbent (graphene) and a hard skeleton (SiC) material in lithium sulfur batteries.

Synthesis of carbon nanoflake/sulfur arrays as cathode materials of lithium-sulfur batteries

2018 ◽  
Vol 11 (06) ◽  
pp. 1840001 ◽  
Author(s):  
Fan Wang ◽  
Xinqi Liang ◽  
Minghua Chen ◽  
Xinhui Xia
Keyword(s):  
Cathode Materials ◽  
Cycling Performance ◽  
High Rate ◽  
Synthetic Method ◽  
Sulfur Cathode ◽  
Dual Roles ◽  
High Quality ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

It is of great importance to develop high-quality carbon/sulfur cathode for lithium-sulfur batteries (LSBs). Herein, we report a facile strategy to embed sulfur into interconnected carbon nanoflake matrix forming integrated electrode. Interlinked carbon nanoflakes have dual roles not only as a highly conductive matrix to host sulfur, but also act as blocking barriers to suppress the shuttle effect of intermediate polysulfides. In the light of these positive characteristics, the obtained carbon nanoflake/S cathode exhibit good LSBs performances with high capacities (1117[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 0.2[Formula: see text]C, and 741[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 0.6[Formula: see text]C) and good high-rate cycling performance. Our synthetic method provides a novel way to construct enhanced carbon/sulfur cathode for LSBs.

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