Conductive cobalt doped niobium nitride porous spheres as an efficient polysulfide convertor for advanced lithium-sulfur batteries

2020 ◽  
Vol 8 (13) ◽  
pp. 6276-6282 ◽  
Author(s):  
Weini Ge ◽  
Lu Wang ◽  
Chuanchuan Li ◽  
Chunsheng Wang ◽  
Debao Wang ◽  
...  
Keyword(s):  
Niobium Nitride ◽  
Cycle Stability ◽  
Lithium Sulfur Batteries ◽  
And Performance ◽  
Sulfur Hosts ◽  
Porous Spheres ◽  
Lithium Sulfur ◽  
High Sulfur Loading

Porous Co-NbN spheres with excellent conductivity are used as sulfur hosts for lithium-sulfur batteries, which deliver excellent long-term cycle stability and performance with a high sulfur loading and lean electrolyte.

scholarly journals Construction of ultrathin MnO2 decorated graphene/carbon nanotube nanocomposites as efficient sulfur hosts for high-performance lithium–sulfur batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 6346-6355 ◽  
Author(s):  
Nan Wang ◽  
Sikan Peng ◽  
Xiang Chen ◽  
Jixian Wang ◽  
Chen Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Cycling Performance ◽  
High Rate ◽  
Rate Performance ◽  
Lithium Sulfur Batteries ◽  
Sulfur Hosts ◽  
High Rate Performance ◽  
Nano Size ◽  
Lithium Sulfur

Ultrathin MnO2 nanosheets and nano size sulfur particles distributed uniformly on the surface of G/CNT hybrids, which exhibit high rate performance and long-term cycling performance.

scholarly journals A saccharide-based binder for efficient polysulfide regulations in Li-S batteries

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yingyi Huang ◽  
Mahdokht Shaibani ◽  
Tanesh D. Gamot ◽  
Mingchao Wang ◽  
Petar Jovanović ◽  
...  
Keyword(s):  
Cycle Stability ◽  
Binder System ◽  
Sulfur Cathode ◽  
Capacity Retention ◽  
Practical Applications ◽  
Energy Storage Technology ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Reducing Properties

AbstractThe viability of lithium-sulfur batteries as an energy storage technology depends on unlocking long-term cycle stability. Most instability stems from the release and transport of polysulfides from the cathode, which causes mossy growth on the lithium anode, leading to continuous consumption of electrolyte. Therefore, development of a durable cathode with minimal polysulfide escape is critical. Here, we present a saccharide-based binder system that has a capacity for the regulation of polysulfides due to its reducing properties. Furthermore, the binder promotes the formation of viscoelastic filaments during casting which endows the sulfur cathode with a desirable web-like microstructure. Taken together this leads to 97% sulfur utilisation with a cycle life of 1000 cycles (9 months) and capacity retention (around 700 mAh g−1 after 1000 cycles). A pouch cell prototype with a specific energy of up to 206 Wh kg−1 is produced, demonstrating the promising potential for practical applications.

Lean-electrolyte lithium–sulfur electrochemical cells with high-loading carbon nanotube/nanofiber–polysulfide cathodes

2021 ◽  
Vol 57 (16) ◽  
pp. 2009-2012 ◽  
Author(s):  
Yin-Ju Yen ◽  
Sheng-Heng Chung
Keyword(s):  
Carbon Nanotube ◽  
Failure Mechanism ◽  
High Loading ◽  
Electrochemical Cells ◽  
Cycle Stability ◽  
Lithium Sulfur ◽  
High Sulfur Loading

A carbon-nanotube/nanofiber–polysulfide cathode achieves long-term cycle stability and explores the failure mechanism of a lithium–sulfur cell with high sulfur loading/content at a lean electrolyte condition.

“Pea-pod-like” nitrogen-doped hollow porous carbon cathode hosts decorated with polar titanium dioxide nanocrystals as efficient polysulfide reservoirs for advanced lithium–sulfur batteries

2018 ◽  
Vol 6 (37) ◽  
pp. 18191-18205 ◽  
Author(s):  
Weiqi Yao ◽  
Chenjie Chu ◽  
Weizhong Zheng ◽  
Liang Zhan ◽  
Yanli Wang
Keyword(s):  
Titanium Dioxide ◽  
Porous Carbon ◽  
High Capacity ◽  
Rate Capability ◽  
Cycle Stability ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
Pea Pod ◽  
Lithium Sulfur

The peculiar “pea-pod-like” rod-TiO2@C/S cathodes deliver high capacity, superior rate capability and long-term cycle stability.

Pomegranate-like microclusters organized by ultrafine Co nanoparticles@nitrogen-doped carbon subunits as sulfur hosts for long-life lithium–sulfur batteries

2018 ◽  
Vol 6 (29) ◽  
pp. 14178-14187 ◽  
Author(s):  
Peng Wang ◽  
Zhian Zhang ◽  
Xiaolin Yan ◽  
Ming Xu ◽  
Yuxiang Chen ◽  
...  
Keyword(s):  
Cycling Stability ◽  
Nitrogen Doped ◽  
Trapping Effect ◽  
Lithium Sulfur Batteries ◽  
Long Life ◽  
Co Nanoparticles ◽  
Nitrogen Doped Carbon ◽  
Sulfur Hosts ◽  
Lithium Sulfur

Long-term cycling stability of 80S/Co-NPC-MCs electrode at 1 and 2C and the schematic of the trapping effect of sulfur and PSs in Co-NPC-MCs.

Sign in / Sign up

Export Citation Format

Share Document