Molecular Clip Strategy of Modified Sulfur Cathodes for High-Performance Potassium Sulfur Batteries

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	Molecular Clip Strategy of Modified Sulfur Cathodes for High-Performance Potassium Sulfur Batteries
	Chen Tianyu1 ; Min Zhiwen1 ; Yu Zhenjiang 1; Zheng Menting 2; Jiang Qingbin1 ; Xu Huifang1 ; Sun Yuanmiao 3; Hui Kwan San 4; Zha Chenyang 1; Lu Jun 2; HUI KWUN NAM1
	2024-12
Source Publication	Advanced Science
Pages	2405457
Abstract	Potassium-sulfur (K-S) batteries are severely limited by the sluggish reactionkinetics of the cyclooctasulfur (cyclo-S8 ) electrode with low conductivity,which urgently requires a novel cathode to facilitate activity to improve sulfurutilization. In this study, using the wet chemistry method, the molecular clipof Li+ is created to replace cyclo-S8 molecular with the highly active chain-likeS62− molecular. The molecular clip strategy eﬀectively lowers the reactionbarrier in potassium-sulfur systems, and the stretching of S─S bonds weakensthe binding between sulfur atoms, facilitating the transformation of potassiumpolysulﬁdes (KPSs). The as-prepared cathode exhibits a reversible capacity of894.8 mAh g−1 at a current rate of 0.5 C. It maintains a long cycle life of 1000cycles with a stable coulombic eﬃciency in the potassium–sulfur cells withoutcathode catalysts. Operando XRD and Raman spectra combined with densityfunctional theory (DFT) calculations, revealing the high eﬃciency of enhancedconversion of potassium polysulﬁde for high-performance K-S batteries.
Document Type	Journal article
Collection	INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author	Hui Kwan San; Zha Chenyang; Lu Jun; HUI KWUN NAM
Affiliation	1.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau SAR, 999078, China 2.College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027 China 3.Institute of Technology for Carbon Neutrality, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055 China 4.Department of Mechanical Engineering, College of Engineering, Prince Mohammad Bin Fahd University, P.O. Box 1664, Al Khobar, 31952 Kingdom of Saudi Arabia
First Author Affilication	INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author Affilication	INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation GB/T 7714	Chen Tianyu,Min Zhiwen,Yu Zhenjiang,et al. Molecular Clip Strategy of Modified Sulfur Cathodes for High-Performance Potassium Sulfur Batteries[J]. Advanced Science, 2024, 2405457.
APA	Chen Tianyu., Min Zhiwen., Yu Zhenjiang., Zheng Menting., Jiang Qingbin., Xu Huifang., Sun Yuanmiao., Hui Kwan San., Zha Chenyang., Lu Jun., & HUI KWUN NAM (2024). Molecular Clip Strategy of Modified Sulfur Cathodes for High-Performance Potassium Sulfur Batteries. Advanced Science, 2405457.
MLA	Chen Tianyu,et al."Molecular Clip Strategy of Modified Sulfur Cathodes for High-Performance Potassium Sulfur Batteries".Advanced Science (2024):2405457.

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