High coulombic efficiency and high-rate capability lithium sulfur batteries with low-solubility lithium polysulfides by using alkylene radicals to covalently connect sulfur

Nano Energy ◽  
2017 ◽  
Vol 41 ◽  
pp. 758-764 ◽  
Author(s):  
Xuejun Liu ◽  
Na Xu ◽  
Tao Qian ◽  
Jie Liu ◽  
Xiaowei Shen ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Rate Capability ◽  
High Rate ◽  
High Rate Capability ◽  
Lithium Sulfur Batteries ◽  
Low Solubility ◽  
Lithium Sulfur ◽  
High Coulombic Efficiency

Sulfur-infiltrated graphene-backboned mesoporous carbon nanosheets with a conductive polymer coating for long-life lithium–sulfur batteries

Nanoscale ◽  
2015 ◽  
Vol 7 (17) ◽  
pp. 7569-7573 ◽  
Author(s):  
Yanfeng Dong ◽  
Shaohong Liu ◽  
Zhiyu Wang ◽  
Yang Liu ◽  
Zongbin Zhao ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Polymer Coating ◽  
Conductive Polymer ◽  
High Capacity ◽  
Rate Capability ◽  
High Rate ◽  
High Rate Capability ◽  
Carbon Nanosheets ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Sulfur-infiltrated graphene-backboned mesoporous carbon nanosheets with a conductive polymer coating exhibit a long lifespan of 400 cycles with a high capacity and an excellent high-rate capability for Li–S batteries.

scholarly journals Ultra-Stable Lithium-Sulfur Batteries Using Nickel Phosphide@Carbon Fabric Interlayer

2021 ◽  
Author(s):  
Kyeong min Yang ◽  
Soochan Kim ◽  
Kaiwei Yang ◽  
Sungsik Choi ◽  
Misuk Cho ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Low Cost ◽  
Rate Capability ◽  
High Rate ◽  
Carbon Fabric ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Lithium Sulfur Batteries ◽  
Electrochemically Deposited ◽  
Lithium Sulfur

Abstract Lithium-sulfur batteries (LSB) are highly promising candidates for next generation energy storage devices due to their high theoretical capacity and the low cost of sulfur. However, dissolution of lithium polysulfides (LPS) into electrolyte causes undesirable effects, resulting in loss of active materials, low Coulombic efficiency, and fast capacity fading. To address these issues, designed interlayers are inserted between a separator and S cathode to evaluate the effect of blocking of long chain LPS and catalytic conversion of LPS to Li2S2/Li2S on battery performance. In order to amplify the effect of interlayer, the Ni2P nanoparticles are electrochemically deposited on carbon fabric (CF) which exhibit excellent adsorption and conversion effect of LPS. A cell fabricated with the Ni2P@CF interlayer allows remarkable improvement in the capacity decay of 0.04% per cycle at 1 C for 1000 cycles and outstanding high rate capability. The cell delivered a capacity retention of 64% employing a current density of 8C.

A 2D/2D graphitic carbon nitride/N-doped graphene hybrid as an effective polysulfide mediator in lithium–sulfur batteries

2019 ◽  
Vol 3 (9) ◽  
pp. 1807-1815 ◽  
Author(s):  
Junsheng Ma ◽  
Mingpeng Yu ◽  
Huanyu Ye ◽  
Hongquan Song ◽  
Dongxue Wang ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Coulombic Efficiency ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Lithium Sulfur Batteries ◽  
Doped Graphene ◽  
Template Free ◽  
Lithium Sulfur ◽  
High Coulombic Efficiency

A heterostructured host composed of porous g-C3N4 and N-doped graphene was fabricated by a template-free strategy. The hybrid display excellent cyclability and high coulombic efficiency due to the enhanced polysulfide anchoring-conversion capability.

scholarly journals Electroconductive Additives for High-Rate Capability of High-Areal-Capacity Lithium–Sulfur Batteries Using Metal-Foam Current Collector

2019 ◽  
Author(s):  
Hiroki Nara ◽  
Tokihiko Yokoshima ◽  
Hitoshi Mikuriya ◽  
Shingo Tsuda ◽  
Tetsuya Osaka
Keyword(s):  
Energy Density ◽  
Aluminum Foam ◽  
Metal Foam ◽  
Rate Capability ◽  
Current Collector ◽  
High Rate ◽  
Lithium Sulfur Batteries ◽  
Areal Capacity ◽  
Lithium Sulfur ◽  
High Sulfur Loading

Various types of electroconductive additives were evaluated for high C-rate capability in an attempt to extend practical application of high-areal-capacity lithium–sulfur batteries that employ an aluminum-foam current collector. Carbon nanofibers (CNFs) were found to be the most effective additive, with the ability to attain a high-sulfur-loading of 40 mg cm−2. A CNF-containing cell exhibited gravimetric capacities of 1094 and 758 mAh gsulfur−1 (46.8 and 32.4 mAh cm−2) at 0.05 and 0.1 C-rate, respectively, in an ether-based electrolyte. Because a CNF-containing slurry exhibits low viscosity even at a high solid ratio, it could be filled into the aluminum foam. Additionally, a lithium–sulfur battery with high-sulfur-loading had an energy density of ~120 Wh kg−1, a value that was calculated from the weight of the components of the cathode, anode, current collectors, electrolyte, and separator. Assuming that the amount of electrolyte decreases and that the energy density of cells accumulate, a theoretical energy density of 522 Wh kg−1 was estimated. Moreover, it was found that even if a high-areal-capacity was achieved, the discharge capacity converged at a high C-rate, unless there was an improvement in ion diffusion in the bulk electrolyte. This is considered a limitation of sulfur cathodes with high-sulfur-loading.

Flexible all-carbon interlinked nanoarchitectures as cathode scaffolds for high-rate lithium–sulfur batteries

2014 ◽  
Vol 2 (28) ◽  
pp. 10869-10875 ◽  
Author(s):  
Jia-Qi Huang ◽  
Hong-Jie Peng ◽  
Xin-Yan Liu ◽  
Jing-Qi Nie ◽  
Xin-Bing Cheng ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Mechanical Strength ◽  
High Capacity ◽  
Rate Capability ◽  
High Rate ◽  
Sulfur Cathode ◽  
High Mechanical Strength ◽  
Cathode Electrode ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

A flexible sulfur cathode electrode based on interlinked carbon nanotubes/carbon nanocages with superior conductivity and high mechanical strength was fabricated, which presented an high capacity of 1354 mAh g−1 and exhibited a high electrochemical rate capability.

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