Journal
CHINESE JOURNAL OF MECHANICAL ENGINEERING
Volume 32, Issue 1, Pages -Publisher
SPRINGEROPEN
DOI: 10.1186/s10033-019-0374-2
Keywords
TiO2 nanofibers; Mesoporous structure; Lithium-sulfur batteries; Cathode; Electrochemical property
Categories
Funding
- National Nature Science Foundation of China [61774022]
- Education Department of Jilin Province of China [JJKH20181030KJ]
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Currently, lithium-sulfur batteries suffer from several critical limitations that hinder their practical application, such as the large volumetric expansion of electrode, poor conductivity and lower sulfur utilization. In this work, TiO2 nanofibers with mesoporous structure have been synthesized by electrospinning and heat treating. As the host material of cathode for Li-S battery, the as prepared samples with novelty structure could enhance the conductivity of cathode composite, promote the utilization of sulfur, and relieve volume expansion for improving the electrochemical property. The initial discharge capacity of TiO2/S composite cathode is 703mAh/g and the capacity remained at 652 mAh/g after 200 cycles at 0.1 C, whose the capacity retention remains is at 92.7%, demonstrating great prospect for application in high-performance Li-S batteries.
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