scholarly journals Creating Effective Nanoreactors on Carbon Nanotubes with Mechanochemical Treatments for High-Areal-Capacity Sulfur Cathodes and Lithium Anodes

2018 ◽  
Vol 28 (32) ◽  
pp. 1800595 ◽  
Author(s):  
Gang Yang ◽  
Jian Tan ◽  
Ho Jin ◽  
Young Heon Kim ◽  
Xinyu Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Mechanochemical Treatments ◽  
Sulfur Cathodes ◽  
Areal Capacity

High areal capacity flexible sulfur cathode based on multi-functionalized super-aligned carbon nanotubes

Nano Research ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 1105-1113 ◽  
Author(s):  
Lujie Jia ◽  
Jian Wang ◽  
Zijin Chen ◽  
Yipeng Su ◽  
Wei Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Sulfur Cathode ◽  
Aligned Carbon Nanotubes ◽  
Areal Capacity

scholarly journals Nickel sulfide nanocrystals on nitrogen-doped porous carbon nanotubes with high-efficiency electrocatalysis for room-temperature sodium-sulfur batteries

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Zichao Yan ◽  
Jin Xiao ◽  
Weihong Lai ◽  
Li Wang ◽  
Florian Gebert ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Porous Carbon ◽  
Density Functional ◽  
Room Temperature ◽  
Lewis Base ◽  
Nitrogen Doped ◽  
High Electronic Conductivity ◽  
Sulfur Host ◽  
Sodium Sulfur ◽  
Sulfur Cathodes

Abstract Polysulfide dissolution and slow electrochemical kinetics of conversion reactions lead to low utilization of sulfur cathodes that inhibits further development of room-temperature sodium-sulfur batteries. Here we report a multifunctional sulfur host, NiS2 nanocrystals implanted in nitrogen-doped porous carbon nanotubes, which is rationally designed to achieve high polysulfide immobilization and conversion. Attributable to the synergetic effect of physical confinement and chemical bonding, the high electronic conductivity of the matrix, closed porous structure, and polarized additives of the multifunctional sulfur host effectively immobilize polysulfides. Significantly, the electrocatalytic behaviors of the Lewis base matrix and the NiS2 component are clearly evidenced by operando synchrotron X-ray diffraction and density functional theory with strong adsorption of polysulfides and high conversion of soluble polysulfides into insoluble Na2S2/Na2S. Thus, the as-obtained sulfur cathodes exhibit excellent performance in room-temperature Na/S 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.

Cobalt nanoparticles shielded in N-doped carbon nanotubes for high areal capacity Li–S batteries

2020 ◽  
Vol 56 (20) ◽  
pp. 3007-3010 ◽  
Author(s):  
Lei Wei ◽  
Wanlong Li ◽  
Teng Zhao ◽  
Nanxiang Zhang ◽  
Li Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Synergistic Effect ◽  
Reaction Kinetics ◽  
Redox Reaction ◽  
Cobalt Nanoparticles ◽  
Lithium Polysulfide ◽  
Co Nanoparticles ◽  
Areal Capacity

The doped N species and embedded Co nanoparticles of Co-NCNTs have a synergistic effect on lithium polysulfide capture and conversion, leading to enhanced redox reaction kinetics.

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.

Hydroxylated carbon nanotube enhanced sulfur cathodes for improved electrochemical performance of lithium–sulfur batteries

2015 ◽  
Vol 51 (71) ◽  
pp. 13682-13685 ◽  
Author(s):  
Joo Hyun Kim ◽  
Kun Fu ◽  
Junghyun Choi ◽  
Seho Sun ◽  
Jeonghyun Kim ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

Hydroxylated multi-walled carbon nanotubes were introduced into sulfur cathodes to utilize the hydrophilic attraction between the OH group and polysulfides as well as to increase the utilization of sulfur.

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