Mesoporous Carbon Additives for Long Cycle Life Sulfur Cathodes of Li-S Batteries

Bulletin of the Korean chemical society

Min-Sik Park¹  Ki Jae Kim¹  Yongju Jung¹  Seok Kim¹  Young-Jun Kim¹  Jeong Yoon Koh¹  Tae Jeong Kim¹  Eun Hee Kim¹  Ji-Sang Yu¹ 

关键词: Mesoporous carbon additives;    Li-S batteries;    Cycling performance;    Homogeneous distribution;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

We examine the potential use of disordered mesoporous carbon as a functional additive for confining dissolved Li-polysulfides and improving the cycling performance of Li-S batteries. To promote a better understanding of the correlation between the total pore volume of disordered mesoporous carbon and the cycling performance of Li-S batteries, a series of disordered mesoporous carbons with different total pore volumes are successfully synthesized using a commercial silica template. Based on the electrochemical and structural analyses, we suggest that the total pore volume of disordered mesoporous carbon is a predominant factor in determining its capability for either the absorption or adsorption of Li-polysulfides, which is primarily responsible for enhancing the cycling performance. The addition of disordered mesoporous carbon is also effective in enhancing the homogeneous distribution of active sulfur in the cathode, thereby affecting the cycling performance.

【 授权许可】

Unknown