A 3D conductive network with high loading Li2S@C for high performance lithium–sulfur batteries

2017 ◽  
Vol 5 (36) ◽  
pp. 19358-19363 ◽  
Author(s):  
Dong-huang Wang ◽  
Dong Xie ◽  
Xin-hui Xia ◽  
Xu-qing Zhang ◽  
Wang-jia Tang ◽  
...  
Keyword(s):  
High Performance ◽  
Active Material ◽  
High Loading ◽  
Conductive Network ◽  
Protective Shield ◽  
Lithium Sulfur Batteries ◽  
Material Utilization ◽  
Areal Capacity ◽  
Lithium Sulfur ◽  
Active Material Utilization

We have prepared an integrated CF–CB–Li2S@C cathode with high loading Li2S for high areal-capacity Li–S batteries. The federated conductive network and efficient carbon coating not only provide an efficient electron transport and guarantee high active material utilization but also form a durable protective shield for suppressing polysulfide dissolution.

scholarly journals A core–shell cathode substrate for developing high-loading, high-performance lithium–sulfur batteries

2018 ◽  
Vol 6 (48) ◽  
pp. 24841-24847 ◽  
Author(s):  
Ran Yu ◽  
Sheng-Heng Chung ◽  
Chun-Hua Chen ◽  
Arumugam Manthiram
Keyword(s):  
High Performance ◽  
Active Material ◽  
Three Dimensional ◽  
High Loading ◽  
Core Shell ◽  
Porous Core ◽  
Lithium Sulfur Batteries ◽  
Cathode Substrate ◽  
Dense Shell ◽  
Lithium Sulfur

The internal porous core and external dense shell of the three-dimensional cathode substrate, respectively, accommodate and encapsulate a large amount of active material.

scholarly journals A free-standing PAN/PMMA/rGO carbon paper as an effective interlayer for high performance lithium-sulfur batteries

2020 ◽  
Vol 24 (4) ◽  
pp. 2485-2490
Author(s):  
Ya Li ◽  
Leigen Liu ◽  
Zhenfeng Lin ◽  
Shao-Wen Yao
Keyword(s):  
Active Material ◽  
Cycle Life ◽  
Free Standing ◽  
Simple Modification ◽  
Lithium Sulfur Battery ◽  
Lithium Sulfur Batteries ◽  
Material Utilization ◽  
Sulfur Battery ◽  
Lithium Sulfur ◽  
Active Material Utilization

The limitations of the polysulfides shuttling and lithium dendrites have been obstacles to improve the lithium-sulfur battery technology, resulting in low active material utilization and poor cycle life. Here we report a simple modification of the traditional lithium-sulfur battery configuration to achieve high capacity with a long cycle life and high reversible rate. Great improvement was observed with a carbonized PAN/PMMA/rGO paper between the anode and the separator in the active material utilization and capacity retention. The adding of a free-standing PAN/PMMA/rGO carbon interlayer demonstrated the feasibility of enhancing the performance of lithium-sulfur batteries.

Sulfur vacancies in Co9S8-x/N-doped graphene enhancing electrochemical kinetics to high-performance lithium sulfur batteries

2021 ◽  
Author(s):  
Haojie Li ◽  
Yihua Song ◽  
Kai Xi ◽  
Wei Wang ◽  
Sheng Liu ◽  
...  
Keyword(s):  
Cathode Materials ◽  
High Performance ◽  
Catalytic Conversion ◽  
High Energy ◽  
Electrochemical Kinetics ◽  
Lithium Sulfur Batteries ◽  
Doped Graphene ◽  
Sulfur Battery ◽  
Areal Capacity ◽  
Lithium Sulfur

A sufficient areal capacity is necessary for achieving high-energy lithium sulfur battery, which requires high enough sulfur loading in cathode materials. Therefore, kinetically fast catalytic conversion of polysulfide intermediates is...

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.

Facile Synthesis of Uniform Carbon Coated Li2S/rGO cathode for High-Performance Lithium-Sulfur Batteries

MRS Advances ◽  
2018 ◽  
Vol 3 (60) ◽  
pp. 3501-3506 ◽  
Author(s):  
Gaind P. Pandey ◽  
Joshua Adkins ◽  
Lamartine Meda
Keyword(s):  
High Performance ◽  
Active Material ◽  
Cycling Performance ◽  
High Energy ◽  
High Energy Density ◽  
Shell Nanostructures ◽  
Lithium Sulfur Batteries ◽  
Carbon Coated ◽  
Co Precipitation ◽  
Lithium Sulfur

ABSTRACTLithium sulfide (Li2S) is one of the most attractive cathode materials for high energy density lithium batteries as it has a high theoretical capacity of 1166 mA h g-1. However, Li2S suffers from poor rate performance and short cycle life due to its insulating nature and polysulfide shuttle during cycling. In this work, we report a facile and viable approach to address these issues. We propose a method to synthesize a Li2S based nanocomposite cathode material by dissolving Li2S as the active material, polyvinylpyrrolidone (PVP) as the carbon precursor, and graphene oxide (GO) as a matrix to enhance the conductivity, followed by a co-precipitation and high-temperature carbonization process. The Li2S/rGO cathode yields an exceptionally high initial capacity of 817 mAh g-1 based on Li2S mass at C/20 rate and also shows a good cycling performance. The carbon-coated Li2S/rGO cathode demonstrates the capability of robust core-shell nanostructures for different rates and improved capacity retention, revealing carbon coated Li2S/rGO composites as an outstanding system for high-performance lithium-sulfur batteries.

scholarly journals Free-standing and binder-free highly N-doped carbon/sulfur cathodes with tailorable loading for high-areal-capacity lithium–sulfur batteries

2015 ◽  
Vol 3 (41) ◽  
pp. 20482-20486 ◽  
Author(s):  
A. Schneider ◽  
C. Suchomski ◽  
H. Sommer ◽  
J. Janek ◽  
T. Brezesinski
Keyword(s):  
High Loading ◽  
Carbon Paper ◽  
Free Standing ◽  
Lithium Sulfur Batteries ◽  
Binder Free ◽  
Sulfur Host ◽  
Sulfur Cathodes ◽  
Areal Capacity ◽  
Lithium Sulfur

A practical high-loading Li–S battery is realized by using free-standing and highly conductive N-doped carbon paper as sulfur host.

A “boxes in fibers” strategy to construct a necklace-like conductive network for high-rate and high-loading lithium–sulfur batteries

2020 ◽  
Vol 8 (22) ◽  
pp. 11327-11336 ◽  
Author(s):  
Shiyuan Zhou ◽  
Jiapeng Liu ◽  
Fanxuan Xie ◽  
Yinghao Zhao ◽  
Tao Mei ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
High Rate ◽  
High Loading ◽  
Conductive Network ◽  
Excellent Performance ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur

Following a “boxes in fibers” strategy, a 3D conductive network is constructed by necklace-like N-doped carbon nanofibers with carbon nanoboxes and TiC as an efficient sulfur host, showing excellent performance even under high-rate and high-loading.

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