Functional Mesoporous Carbon-Coated Separator for Long-Life, High-Energy Lithium-Sulfur Batteries

2015 ◽  
Vol 25 (33) ◽  
pp. 5285-5291 ◽  
Author(s):  
Juan Balach ◽  
Tony Jaumann ◽  
Markus Klose ◽  
Steffen Oswald ◽  
Jürgen Eckert ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
High Energy ◽  
Lithium Sulfur Batteries ◽  
Carbon Coated ◽  
Long Life ◽  
Coated Separator ◽  
Lithium Sulfur

Crab shell-derived nitrogen-doped micro-/mesoporous carbon as an effective separator coating for high energy lithium–sulfur batteries

2017 ◽  
Vol 5 (37) ◽  
pp. 19892-19900 ◽  
Author(s):  
Hongyuan Shao ◽  
Fei Ai ◽  
Weikun Wang ◽  
Hao Zhang ◽  
Anbang Wang ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
High Energy ◽  
Crab Shell ◽  
Nitrogen Doped ◽  
Charge Process ◽  
Lithium Sulfur Batteries ◽  
Coated Separator ◽  
Lithium Sulfur

The synthesis of N-MIMEC from crab shell and the LiPS-trapping mechanisms of the N-MIMEC-coated separator during the discharge/charge process are demonstrated.

A compact 3D interconnected sulfur cathode for high-energy, high-power and long-life lithium-sulfur batteries

2019 ◽  
Vol 20 ◽  
pp. 14-23 ◽  
Author(s):  
Xiaoliang Yu ◽  
Jiaojiao Deng ◽  
Ruitao Lv ◽  
Zheng-Hong Huang ◽  
Baohua Li ◽  
...  
Keyword(s):  
High Power ◽  
High Energy ◽  
Sulfur Cathode ◽  
Lithium Sulfur Batteries ◽  
Long Life ◽  
Lithium Sulfur

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.

Mesoporous Carbon Interlayers with Tailored Pore Volume as Polysulfide Reservoir for High-Energy Lithium–Sulfur Batteries

2015 ◽  
Vol 119 (9) ◽  
pp. 4580-4587 ◽  
Author(s):  
Juan Balach ◽  
Tony Jaumann ◽  
Markus Klose ◽  
Steffen Oswald ◽  
Jürgen Eckert ◽  
...  
Keyword(s):  
Pore Volume ◽  
Mesoporous Carbon ◽  
High Energy ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

scholarly journals TiO2/GO-coated functional separator to suppress polysulfide migration in lithium–sulfur batteries

2019 ◽  
Vol 10 ◽  
pp. 1726-1736 ◽  
Author(s):  
Ning Liu ◽  
Lu Wang ◽  
Taizhe Tan ◽  
Yan Zhao ◽  
Yongguang Zhang
Keyword(s):  
Rate Capability ◽  
High Energy ◽  
High Energy Density ◽  
Cyclic Performance ◽  
Chemical Absorption ◽  
Lithium Sulfur Batteries ◽  
Excellent Adhesion ◽  
Coated Separator ◽  
Enhanced Conductivity ◽  
Lithium Sulfur

Lithium–sulfur batteries render a high energy density but suffer from poor cyclic performance due to the dissolution of intermediate polysulfides. Herein, a lightweight nanoporous TiO2 and graphene oxide (GO) composite is prepared and utilized as an interlayer between a Li anode and a sulfur cathode to suppress the polysulfide migration and improve the electrochemical performance of Li/S batteries. The interlayer can capture the polysulfides due to the presence of oxygen functional groups and formation of chemical bonds. The hierarchically porous TiO2 nanoparticles are tightly wrapped in GO sheets and facilitate the polysulfide storage and chemical absorption. The excellent adhesion between TiO2 nanoparticles and GO sheets resulted in enhanced conductivity, which is highly desirable for an efficient electron transfer process. The Li/S battery with a TiO2/GO-coated separator exhibited a high initial discharge capacity of 1102.8 mAh g−1 and a 100th cycle capacity of 843.4 mAh g−1, which corresponds to a capacity retention of 76.48% at a current rate of 0.2 C. Moreover, the Li/S battery with the TiO2/GO-coated separator showed superior cyclic performance and excellent rate capability, which shows the promise of the TiO2/GO composite in next-generation Li/S batteries.

Single-atom catalysis enables long-life, high-energy lithium-sulfur batteries

Nano Research ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1856-1866 ◽  
Author(s):  
Zechao Zhuang ◽  
Qi Kang ◽  
Dingsheng Wang ◽  
Yadong Li
Keyword(s):  
High Energy ◽  
Single Atom ◽  
Lithium Sulfur Batteries ◽  
Long Life ◽  
Lithium Sulfur
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