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.

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

scholarly journals MnO2/rGO/CNTs Framework as a Sulfur Host for High-Performance Li-S Batteries

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1989 ◽  
Author(s):  
Wei Dong ◽  
Lingqiang Meng ◽  
Xiaodong Hong ◽  
Sizhe Liu ◽  
Ding Shen ◽  
...  
Keyword(s):  
High Performance ◽  
Physical Adsorption ◽  
Rapid Development ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Framework Structure ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Initial Capacity

Lithium-sulfur batteries are very promising next-generation energy storage batteries due to their high theoretical specific capacity. However, the shuttle effect of lithium-sulfur batteries is one of the important bottlenecks that limits its rapid development. Herein, physical and chemical dual adsorption of lithium polysulfides are achieved by designing a novel framework structure consisting of MnO2, reduced graphene oxide (rGO), and carbon nanotubes (CNTs). The framework-structure composite of MnO2/rGO/CNTs is prepared by a simple hydrothermal method. The framework exhibits a uniform and abundant mesoporous structure (concentrating in ~12 nm). MnO2 is an α phase structure and the α-MnO2 also has a significant effect on the adsorption of lithium polysulfides. The rGO and CNTs provide a good physical adsorption interaction and good electronic conductivity for the dissolved polysulfides. As a result, the MnO2/rGO/CNTs/S cathode delivered a high initial capacity of 1201 mAh g−1 at 0.2 C. The average capacities were 916 mAh g−1, 736 mAh g−1, and 547 mAh g−1 at the current densities of 0.5 C, 1 C, and 2 C, respectively. In addition, when tested at 0.5 C, the MnO2/rGO/CNTs/S exhibited a high initial capacity of 1010 mAh g−1 and achieved 780 mAh g−1 after 200 cycles, with a low capacity decay rate of 0.11% per cycle. This framework-structure composite provides a simple way to improve the electrochemical performance of Li-S batteries.

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.

scholarly journals Boron Nitride Nanotube-Based Separator for High-Performance Lithium-Sulfur Batteries

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 11
Author(s):  
Hong-Sik Kim ◽  
Hui-Ju Kang ◽  
Hongjin Lim ◽  
Hyun Jin Hwang ◽  
Jae-Woo Park ◽  
...  
Keyword(s):  
Boron Nitride ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Boron Nitride Nanotube ◽  
Shuttle Effect ◽  
Metal Anode ◽  
Lithium Sulfur Batteries ◽  
The Difference ◽  
Lithium Sulfur

To prevent global warming, ESS development is in progress along with the development of electric vehicles and renewable energy. However, the state-of-the-art technology, i.e., lithium-ion batteries, has reached its limitation, and thus the need for high-performance batteries with improved energy and power density is increasing. Lithium-sulfur batteries (LSBs) are attracting enormous attention because of their high theoretical energy density. However, there are technical barriers to its commercialization such as the formation of dendrites on the anode and the shuttle effect of the cathode. To resolve these issues, a boron nitride nanotube (BNNT)-based separator is developed. The BNNT is physically purified so that the purified BNNT (p−BNNT) has a homogeneous pore structure because of random stacking and partial charge on the surface due to the difference of electronegativity between B and N. Compared to the conventional polypropylene (PP) separator, the p−BNNT loaded PP separator prevents the dendrite formation on the Li metal anode, facilitates the ion transfer through the separator, and alleviates the shuttle effect at the cathode. With these effects, the p−BNNT loaded PP separators enable the LSB cells to achieve a specific capacity of 1429 mAh/g, and long-term stability over 200 cycles.

scholarly journals Properties of S-Functionalized Nitrogen-Based MXene (Ti2NS2) as a Hosting Material for Lithium-Sulfur Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2478
Author(s):  
Chenghao Yao ◽  
Wei Li ◽  
Kang Duan ◽  
Chen Zhu ◽  
Jinze Li ◽  
...  
Keyword(s):  
High Performance ◽  
Specific Capacity ◽  
Host Material ◽  
Sulfur Cathode ◽  
Shuttle Effect ◽  
Lithium Polysulfide ◽  
Lithium Sulfur Batteries ◽  
Calculation Results ◽  
Adsorption Energies ◽  
Lithium Sulfur

Lithium-sulfur (Li-S) batteries have received extensive attention due to their high theoretical specific capacity and theoretical energy density. However, their commercialization is hindered by the shuttle effect caused by the dissolution of lithium polysulfide. To solve this problem, a method is proposed to improve the performance of Li-S batteries using Ti2N(Ti2NS2) with S-functional groups as the sulfur cathode host material. The calculation results show that due to the mutual attraction between Li and S atoms, Ti2NS2 has the moderate adsorption energies for Li2Sx species, which is more advantageous than Ti2NO2 and can effectively inhibit the shuttle effect. Therefore, Ti2NS2 is a potential cathode host material, which is helpful to improve the performance of Li-S batteries. This work provides a reference for the design of high-performance sulfur cathode materials.

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

Different Dimensions of g-C3N4 Nanomaterials on Sulphur Cathode for Lithium Sulfur Batteries

2020 ◽  
Vol 20 (3) ◽  
pp. 1643-1650 ◽  
Author(s):  
Juan Yu ◽  
Nani Ma ◽  
Jiaxin Peng ◽  
Yangyang Dang ◽  
Dongdong Zheng ◽  
...  
Keyword(s):  
Specific Capacity ◽  
Cycling Performance ◽  
Electrochemical Kinetics ◽  
Chemical Adsorption ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Different Dimensions ◽  
Sulfur Battery ◽  
Kinetics Of ◽  
Lithium Sulfur

Lithium sulfur batteries (Li–S) have been deemed to be the promising energy-storage systems. Nevertheless, the shuttle effect caused by diffusion of polysulfides limit their application. In this work, the different dimensions of g-C3N4 nanomaterials (2D g-C3N4 nanosheets and 3D g-C3N4 nanomesh) were doped in S electrode. Because of the large specific surface area of 3D g-C3N4 nanomesh and strong chemical adsorption of polysulfides can provide better effect for inhibition of shuttling effect and its proper electron passage make electrochemical kinetics of lithium–sulfur battery enhanced. The discharge specific capacity of the 3D g-C3N4 battery is up to 731 mAh/g and longer cycling performance with 540 mAh/g after 180 cycles. This experiment paves the way forward for the application of g-C3N4 on Li–S batteries.

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