Integrated Polypyrrole@Sulfur@Graphene Aerogel 3D Architecture via Advanced Vapor Polymerization for High-Performance Lithium–Sulfur Batteries

2019 ◽  
Vol 11 (20) ◽  
pp. 18448-18455 ◽  
Author(s):  
Hu Tang ◽  
Lei You ◽  
Jianwen Liu ◽  
Shiquan Wang ◽  
Pengyu Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Graphene Aerogel ◽  
Lithium Sulfur Batteries ◽  
3D Architecture ◽  
Lithium Sulfur

scholarly journals Confined Polysulfides in N-Doped 3D-CNTs Network for High Performance Lithium-Sulfur Batteries

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6131
Author(s):  
Donghuang Wang ◽  
Aijun Zhou ◽  
Zhujun Yao ◽  
Xinhui Xia ◽  
Yongqi Zhang
Keyword(s):  
Discharge Capacity ◽  
High Performance ◽  
Synergetic Effect ◽  
Three Dimensional ◽  
Utilization Efficiency ◽  
Lithium Sulfur Batteries ◽  
3D Architecture ◽  
Novel Strategy ◽  
Physical And Chemical ◽  
Lithium Sulfur

Improving the utilization efficiency of active materials and suppressing the dissolution of lithium polysulfides into the electrolyte are very critical for development of high-performance lithium-sulfur batteries. Herein, a novel strategy is proposed to construct a three-dimensional (3D) N-doped carbon nanotubes (CNTs) networks to support lithium polysulfides (3D-NCNT-Li2S6) as a binder-free cathode for high-performance lithium-sulfur batteries. The 3D N-doped CNTs networks not only provide a conductive porous 3D architecture for facilitating fast ion and electron transport but also create void spaces and porous channels for accommodating active sulfur. In addition, lithium polysulfides can be effectively confined among the networks through the chemical bond between Li and N. Owing to the synergetic effect of the physical and chemical confinement for the polysulfides dissolution, the 3D-NCNT-Li2S6 cathodes exhibit enhanced charge capacity and cyclic stability with lower polarization and faster redox reaction kinetics. With an initial discharge capacity of 924.8 mAh g−1 at 1 C, the discharge capacity can still maintain 525.1 mAh g−1 after 200 cycles, which is better than that of its counterparts.

High-Performance Lithium-Sulfur Batteries with a Self-Supported, 3D Li2 S-Doped Graphene Aerogel Cathodes

2015 ◽  
Vol 6 (2) ◽  
pp. 1501355 ◽  
Author(s):  
Guangmin Zhou ◽  
Eunsu Paek ◽  
Gyeong S. Hwang ◽  
Arumugam Manthiram
Keyword(s):  
High Performance ◽  
Graphene Aerogel ◽  
Lithium Sulfur Batteries ◽  
Doped Graphene ◽  
Lithium Sulfur

scholarly journals A three-dimensional self-assembled SnS2-nano-dots@graphene hybrid aerogel as an efficient polysulfide reservoir for high-performance lithium–sulfur batteries

2018 ◽  
Vol 6 (17) ◽  
pp. 7659-7667 ◽  
Author(s):  
Liu Luo ◽  
Sheng-Heng Chung ◽  
Arumugam Manthiram
Keyword(s):  
High Performance ◽  
Three Dimensional ◽  
High Loading ◽  
Graphene Aerogel ◽  
Free Standing ◽  
Lithium Sulfur Batteries ◽  
Self Assembled ◽  
Physical And Chemical ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

A free-standing self-assembled graphene aerogel embedded with SnS2nano-dots (SnS2-ND@G) is established as an efficient substrate for high-loading sulfur cathodes with synergistically physical and chemical polysulfide-trapping capability.

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...

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