Vastly Restraining Polysulfide Shuttle by Designing a Dual Adsorption Structure of Bismuth Encapsulated into Carbon Nanotubes Cavity

Nanoscale ◽  
2021 ◽  
Author(s):  
Xingyan Zeng ◽  
Yakun Tang ◽  
Lang Liu ◽  
QingTao Ma ◽  
Yang Gao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Shuttle Effect ◽  
Adsorption Structure ◽  
Lithium Sulfur ◽  
Polysulfide Shuttle

The shuttle effect derived from the dissolution of lithium polysulfides (LIPs) seriously hinders commercialization of lithium-sulfur (Li-S) batteries. Hence, we skillfully design 1D cowpea-like CNTs@Bi composites with the double adsorption...

scholarly journals Effective Suppression of the Polysulfide Shuttle Effect in Lithium–Sulfur Batteries by Implementing rGO–PEDOT:PSS-Coated Separators via Air-Controlled Electrospray

ACS Omega ◽  
2018 ◽  
Vol 3 (12) ◽  
pp. 16465-16471 ◽  
Author(s):  
Jin Hong Lee ◽  
Jisoo Kang ◽  
Seung-Wan Kim ◽  
Willy Halim ◽  
Margaret W. Frey ◽  
...  
Keyword(s):  
Shuttle Effect ◽  
Effective Suppression ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Polysulfide Shuttle

Inhibiting polysulfide shuttling using dual-functional nanowire/nanotube modified layers for highly stable lithium–sulfur batteries

2019 ◽  
Vol 43 (37) ◽  
pp. 14708-14713 ◽  
Author(s):  
Yizhou Wang ◽  
Wenhui Liu ◽  
Ruiqing Liu ◽  
Peifeng Pan ◽  
Liyao Suo ◽  
...  
Keyword(s):  
High Conductivity ◽  
Shuttle Effect ◽  
Dual Functional ◽  
Strong Adsorption ◽  
Lithium Sulfur Batteries ◽  
Adsorption Capability ◽  
Lithium Sulfur ◽  
Polysulfide Shuttle

Dual-functional MnO2 nanowire/CNT modified layers were prepared to inhibit the polysulfide shuttle effect utilizing their strong adsorption capability and high conductivity.

Reduced Polysulfide Shuttle Effect by Using Polyimide Separators with Ionic Liquid-based Electrolytes in Lithium-Sulfur Battery

2017 ◽  
Vol 255 ◽  
pp. 109-117 ◽  
Author(s):  
Yanqing Wang ◽  
Zengqi Zhang ◽  
Masaki Haibara ◽  
Deye Sun ◽  
Xiaodi Ma ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lithium Sulfur Battery ◽  
Shuttle Effect ◽  
Sulfur Battery ◽  
Lithium Sulfur ◽  
Polysulfide Shuttle

scholarly journals Investigation on Cycling and Calendar Aging Processes of 3.4 Ah Lithium-Sulfur Pouch Cells

2021 ◽  
Vol 13 (16) ◽  
pp. 9473
Author(s):  
Salimeh Gohari ◽  
Vaclav Knap ◽  
Mohammad Reza Yaftian
Keyword(s):  
Specific Capacity ◽  
Open Circuit ◽  
Anode Surface ◽  
Small Scale ◽  
Shuttle Effect ◽  
Cathode Degradation ◽  
Lithium Sulfur Batteries ◽  
Cathode Passivation ◽  
Lithium Sulfur ◽  
Polysulfide Shuttle

Much attention has been paid to rechargeable lithium-sulfur batteries (Li–SBs) due to their high theoretical specific capacity, high theoretical energy density, and affordable cost. However, their rapid c fading capacity has been one of the key defects in their commercialization. It is believed that sulfuric cathode degradation is driven mainly by passivation of the cathode surface by Li2S at discharge, polysulfide shuttle (reducing the amount of active sulfur at the cathode, passivation of anode surface), and volume changes in the sulfuric cathode. These degradation mechanisms are significant during cycling, and the polysulfide shuttle is strongly present during storage at a high state-of-charge (SOC). Thus, storage at 50% SOC is used to evaluate the effect of the remaining degradation processes on the cell’s performance. In this work, unlike most of the other previous observations that were performed at small-scale cells (coin cells), 3.4 Ah pouch Li–SBs were tested using cycling and calendar aging protocols, and their performance indicators were analyzed. As expected, the fade capacity of the cycling aging cells was greater than that of the calendar aging cells. Additionally, the measurements for the calendar aging cells indicate that, contrary to the expectation of stopping the solubility of long-chain polysulfides and not attending the shuttle effect, these phenomena occur continuously under open-circuit conditions.

A novel separator modified by titanium dioxide nanotubes/carbon nanotubes composite for high performance lithium-sulfur batteries

2019 ◽  
Vol 12 (02) ◽  
pp. 1950016 ◽  
Author(s):  
Ao Chen ◽  
Weifang Liu ◽  
Jun Yan ◽  
Kaiyu Liu
Keyword(s):  
Carbon Nanotubes ◽  
High Performance ◽  
Physical Adsorption ◽  
Storage System ◽  
Energy Storage System ◽  
Cycling Performance ◽  
Shuttle Effect ◽  
Volumetric Expansion ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

The rechargeable lithium-sulfur batteries were investigated as the most promising energy storage system. Although the composites of carbonaceous materials and metal oxides as the hosts of sulfur have been applied to improve the performance, their structures usually collapsed due to huge volumetric expansion of sulfur. Therefore, interlayer reported as a novel cell configuration could efficiently restrict the shuttle effect of polysulfide. Here, we design a unique separator modified by a functional “polysulfide trapping net” which consists of intertwined TiO2 nanotubes and carbon nanotubes to improve the electrochemical performance of lithium sulfur batteries. Benefiting from the network structure, there are abundant ion pathways, meanwhile, TiO2 nanotubes provide strong chemical and physical adsorption, carbon nanotubes serve as a conductive network which accelerates the transport of electrons. With the modified separator, the electrode exhibits an initial capacity of 936[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 1[Formula: see text]C rate and maintains a stable cycling performance over 200 cycles.

Suppressing the Polysulfide Shuttle Effect by Heteroatom-Doping for High-Performance Lithium–Sulfur Batteries

2018 ◽  
Vol 6 (6) ◽  
pp. 7545-7557 ◽  
Author(s):  
Manfang Chen ◽  
Shu Zhao ◽  
Shouxin Jiang ◽  
Cheng Huang ◽  
Xianyou Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Heteroatom Doping ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Polysulfide Shuttle

scholarly journals Dual-Atoms Iron Sites Boost the Kinetics of Reversible Conversion of Polysulfide for High-Performance Lithium-Sulfur Batteries

2021 ◽  
Author(s):  
Yue Qiu ◽  
Xun Sun ◽  
Maoxu Wang ◽  
Xian Wu ◽  
Bo Jiang ◽  
...  
Keyword(s):  
High Performance ◽  
Iron Catalyst ◽  
High Rate ◽  
Single Atom ◽  
Efficient Catalyst ◽  
Shuttle Effect ◽  
Adsorption Structure ◽  
Lithium Sulfur Batteries ◽  
Kinetics Of ◽  
Lithium Sulfur

Abstract Atomically dispersed metal catalysts have offered significant potential for accelerating sluggish kinetics of transformation of lithium polysulfide(LiPS) and inhibiting the shuttle effect to achieve the long-life cycling and high rate of lithium sulfur batteries. However, the end-on adsorption structure between single metal site and polysulfide limits the adsorption capacity and catalytic activity of single atom catalysts. Here, we construct dual-atoms iron sites on nitrogen doped graphene to serve as highly efficient catalyst for lithium sulfur batteries. As expected, the dual-atoms sites can firmly bound polysulfides by forming double Fe-S bonds between polysulfides and the two adjacent iron atoms. Such double-bond adsorption structure is also favorable for the electron transfer and polysulfides activation, so as to reduce the energy barrier and accelerate the reaction kinetics. As a result, the as-obtained dual-atoms iron catalyst can effectively alleviate the shuttle effect and improve the utilization of active sulfur, thus the batteries present high initial capacity of 1615 mAh g-1 at 0.05 C and long-cycle life with a decay rate per cycle as low as 0.015% at 2C over 1000 cycles.

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