Construction of KB@ZIF-8/PP Composite Separator for Lithium–Sulfur Batteries with Enhanced Electrochemical Performance

Ma, Bingyi; Zhang, Xin; Deng, Xiaoqian; Huang, Sheng; Xiao, Min; Wang, Shuanjin; Han, Dongmei; Meng, Yuezhong

doi:10.3390/polym13234210

Open AccessArticle

Construction of KB@ZIF-8/PP Composite Separator for Lithium–Sulfur Batteries with Enhanced Electrochemical Performance

by

Bingyi Ma

^1,†,

Xin Zhang

^1,†,

Xiaoqian Deng

¹

,

Sheng Huang

²,

Min Xiao

²

,

Shuanjin Wang

²

,

Dongmei Han

^1,* and

Yuezhong Meng

^1,2,*

¹

School of Chemical Engineering and Technology, Sun Yat-sen Univeristy, Zhuhai 519082, China

²

The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China

^*

Authors to whom correspondence should be addressed.

^†

These authors have contributed equally to this work.

Polymers 2021, 13(23), 4210; https://doi.org/10.3390/polym13234210

Submission received: 23 October 2021 / Revised: 5 November 2021 / Accepted: 6 November 2021 / Published: 1 December 2021

(This article belongs to the Special Issue Polymer Materials for Energy Storage and Fuel Cells Applications)

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Abstract

Lithium–sulfur batteries (LSBs) have attracted wide attention, but the shuttle effect of polysulfide hinders their further practical application. Herein, we develop a new strategy to construct a Ketjen black@zeolite imidazole framework-8/polypropylene composite separator. Such a separator consists of Ketjen black (KB), zeolite imidazole framework-8 (ZIF-8) and polypropylene (PP) with a low coating load of 0.06 mg cm⁻² and is denoted as KB@ZIF-8/PP. KB@ZIF-8/PP can absorb polysulfides because of the Lewis acid-base interaction between ZIF-8 and polysulfides. This interaction can reduce the dissolution of polysulfides and suppress the shuttle effect, thereby enhancing the electrochemical performance of the battery. When tested at a current density of 0.1 C, an LSB with a KB@ZIF-8/PP separator exhibits low polarization and achieves a high initial capacity of 1235.6 mAh/g and a high capacity retention rate of 59.27% after 100 cycles.

Keywords: lithium–sulfur battery; separator; shuttle effect; metal-organic framework; chemisorption

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MDPI and ACS Style

Ma, B.; Zhang, X.; Deng, X.; Huang, S.; Xiao, M.; Wang, S.; Han, D.; Meng, Y. Construction of KB@ZIF-8/PP Composite Separator for Lithium–Sulfur Batteries with Enhanced Electrochemical Performance. Polymers 2021, 13, 4210. https://doi.org/10.3390/polym13234210

AMA Style

Ma B, Zhang X, Deng X, Huang S, Xiao M, Wang S, Han D, Meng Y. Construction of KB@ZIF-8/PP Composite Separator for Lithium–Sulfur Batteries with Enhanced Electrochemical Performance. Polymers. 2021; 13(23):4210. https://doi.org/10.3390/polym13234210

Chicago/Turabian Style

Ma, Bingyi, Xin Zhang, Xiaoqian Deng, Sheng Huang, Min Xiao, Shuanjin Wang, Dongmei Han, and Yuezhong Meng. 2021. "Construction of KB@ZIF-8/PP Composite Separator for Lithium–Sulfur Batteries with Enhanced Electrochemical Performance" Polymers 13, no. 23: 4210. https://doi.org/10.3390/polym13234210

APA Style

Ma, B., Zhang, X., Deng, X., Huang, S., Xiao, M., Wang, S., Han, D., & Meng, Y. (2021). Construction of KB@ZIF-8/PP Composite Separator for Lithium–Sulfur Batteries with Enhanced Electrochemical Performance. Polymers, 13(23), 4210. https://doi.org/10.3390/polym13234210

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Construction of KB@ZIF-8/PP Composite Separator for Lithium–Sulfur Batteries with Enhanced Electrochemical Performance

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