Citation: Xinyun Liu, Long Yuan, Xiaoli Peng, Shengjun Lu, Shilan Li, Shengdong Jing, Hua Lei, Yufei Zhang, Haosen Fan. Double-shelled CeO_x/CoS hollow nanobox for synergistic inhibition of polysulfides shuttle effect and lithium dendrites in robust lithium-sulfur battery[J]. Chinese Chemical Letters, ;2026, 37(9): 111438. doi: 10.1016/j.cclet.2025.111438 shu

Double-shelled CeO_x/CoS hollow nanobox for synergistic inhibition of polysulfides shuttle effect and lithium dendrites in robust lithium-sulfur battery

Xinyun Liu ^{a, b, c} ,
Long Yuan ^b ,
Xiaoli Peng ^b ,
Shengjun Lu ^b ,
Shilan Li ^b ,
Shengdong Jing ^b ,
Hua Lei ^{b, *,} ,
Yufei Zhang ^{a, *,} ,
Haosen Fan ^{c, *,}

a.
School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
b.
College of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang 550025, China
c.
School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China

Leihua_gzu@163.com

yfzhang@gdut.edu.cn

hsfan@gzhu.edu.cn

Received Date: 14 May 2025
Revised Date: 9 June 2025
Accepted Date: 10 June 2025
Available Online: 10 June 2025

Figures(7)

Li-S batteries (LSBs) offer significant promise for next-generation energy storage systems on account of their high energy density and the high capacity of sulfur. Nevertheless, the severe shuttle effect of lithium polysulfide (LiPSs) and the sluggish reaction kinetics greatly hinder the further application of LSBs. In this manuscript, Hollow CeO_x/CoS core-shell hybrid were designed and synthesized using ZIF-67 as the self-template to prepare hollow CoS dodecahedral nanoboxs and the subsequent generation of CeO_x nanodots. When used as the polyolefin separator modifier, the unique dodecahedral structure of hollow CoS/CeO_x presents large specific surface area, abundant porous structure and enough active sites, which not only ensures the fast transport of electrolyte/ions and offers numerous active catalytic sites to accelerate the reaction kinetics of LiPSs. In addition, the catalytic activity of the CeO_x/CoS hybrid greatly enhance the uniform ion diffusion and stable growth of lithium nucleation on the lithium metal anode side. The cell with CeO_x/CoS modified separator presented excellent long cycle stability and satisfactory rate performance. The battery can maintain the capacity of 502.2 mAh/g after 900 cycles at the current density of 1 C, accompanying by a minimal 2 decay rate of 0.057%. Even at a current density of 3 C, a high specific capacity of 735.58 mAh/g can still obtained. Besides, when the sulfur loading increase into 4.480 mg/cm², the battery still can maintain excellent cycling stability with the capacity retention ratio of 94.5% after 100 cycles. This study will provide new strategy for the design and preparation of heterostructure with outstanding catalytic performance for LSBs.
- Li-S batteries,
- CeO_x/CoS,
- Separator modification,
- Catalytic conversion and chemisorption,
- CeO_x nanodots
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Double-shelled CeOx/CoS hollow nanobox for synergistic inhibition of polysulfides shuttle effect and lithium dendrites in robust lithium-sulfur battery

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通讯作者: 陈斌, bchen63@163.com

Double-shelled CeO_x/CoS hollow nanobox for synergistic inhibition of polysulfides shuttle effect and lithium dendrites in robust lithium-sulfur battery