A decade of development in cathode-facing surface modified separators for high-performance Li-S batteries

Waqas, Muhammad; Niu, Yinghua; Tang, Mengjun; Pang, Yashuai; Ali, Shamshad; Dong, Yunfa; Lv, Weiqiang; He, Weidong

doi:10.1016/j.ensm.2024.103682

Energy Storage Materials

2024

DOI: 10.1016/j.ensm.2024.103682

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A decade of development in cathode-facing surface modified separators for high-performance Li-S batteries

Muhammad Waqas,

Yinghua Niu,

Mengjun Tang

et al.

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Cited by 3 publications

References 324 publications

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Constructing a Spider‐Web Polymer Blocking Layer on Separator for the High‐Loading Li‐S Battery

Zhang,

Wan,

Gao

et al. 2024

Batteries & Supercaps

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The cycling performance of high‐loading Li−S batteries is still puzzled by the serious shuttle effect of polysulfides. Modifying the commercial separator with polysulfide anchoring materials has been demonstrated as an economical and effective approach to block the polysulfide shuttle. Herein, a cobweb‐like polymer polysulfide‐blocking layer has been constructed via crosslinking between lithium polysilicate (LP) inorganic oligomer and tannic acid (TA) dendritic polymer. Owing to the strongly polar Si−O and Si=O bonds in LP, the spider‐web polymer possesses robust affinity towards polysulfides, indicated by the theoretical calculations. Dendritic polymer TA as the skeleton contributes to effectively exposing the abundant polar functional groups to powerfully capture the polysulfides. As a result, the cycling stability of high‐loading Li−S batteries has been obviously improved. The Li−S battery with sulfur loading of 3.44 mg cm−2 can stably cycle 100 cycles with a high capacity of 685.1 mAh g−1 and columbic efficiency of 99.82 %. Even the sulfur loading increases to 7.15 mg cm−2, the Li−S battery can still deliver a high areal capacity of 5.26 mAh cm−2 after 50 cycles.

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Constructing a Spider‐Web Polymer Blocking Layer on Separator for the High‐Loading Li‐S Battery

Zhang,

Wan,

Gao

et al. 2024

Batteries & Supercaps

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Highly Electronegative Element-Rich COF Modified Separator Achieves High-Performance of Lithium–Sulfur Batteries

Xu,

Hu,

Sun

et al. 2024

ACS Appl. Polym. Mater.

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In this work, a covalent organic framework (COF) containing high electronegativity (TTBT-COF) was prepared to improve the separator of commercial Celgard lithium−sulfur batteries (LSBs). The LSBs with a TTBT-COF separator had a high initial capacity of 1033 mAh g −1 at 0.1 C and remained at 530 mAh g −1 after 500 cycles at 1 C. The average capacity attenuation rate per cycle is 0.057%. In addition, they exhibit a high initial capacity of 616 mAh g −1 at 2 C. The TTBT-COF improved separator can significantly inhibit the shuttle effect of polysulfides, thereby improving the cycle stability and coulomb efficiency of the battery, providing another strategy for the construction of high-performance LSBs.

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Tungsten oxide nanowire clusters anchored on porous carbon fibers as a sulfur redox mediator for lithium–sulfur batteries

Wang,

Zhang,

Yang

et al. 2025

Nanoscale Adv.

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A decade of development in cathode-facing surface modified separators for high-performance Li-S batteries

Cited by 3 publications

References 324 publications

Constructing a Spider‐Web Polymer Blocking Layer on Separator for the High‐Loading Li‐S Battery

Constructing a Spider‐Web Polymer Blocking Layer on Separator for the High‐Loading Li‐S Battery

Highly Electronegative Element-Rich COF Modified Separator Achieves High-Performance of Lithium–Sulfur Batteries

Tungsten oxide nanowire clusters anchored on porous carbon fibers as a sulfur redox mediator for lithium–sulfur batteries

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