期刊
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
卷 35, 期 11, 页码 3331-3335出版社
WILEY-V C H VERLAG GMBH
DOI: 10.5012/bkcs.2014.35.11.3331
关键词
Mesoporous carbon additives; Li-S batteries; Cycling performance; Homogeneous distribution
资金
- Technology Innovation Center, SK Holdings
- Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry & Energy, Republic of Korea [20132020000260]
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.
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