Simple Analysis and Possible Solutions of the Unusual Interfacial Reactions in Li-S batteries

Authors

Xin-Ping AI
Yu-Liang CAO
Han-Xi YANG

Corresponding Author

Han-Xi YANG(hxyang@whu.edu.cn)

Abstract

Rechargeable Li-S batteries are a promising power source with realizable energy densities several times higher than current Li-ion batteries. However, the capacity utilization and cycling stability of the existing Li-S technologies are still insufficient for battery applications. The causes for the electrochemical instability of this redox system arise probably from the changes in the surface structures and electrochemical microenvironments of the Li anode and sulfur cathode during charge-discharge reactions, which includes the frustrated electron transfer in the sulfur-carbon interface, the dissoluble diffusion of the polysulfide intermediates, and the shuttle reaction inbetween the sulfur and Li electrodes. To deal with these problems, this paper tries to reveal the underlying chemistry affecting the charge-discharge stability of Li-S system and describe possible strategies to construct electrochemically stable Li anode and sulfur cathode, so as to achieve high efficiency Li-S batteries.

Graphical Abstract

Keywords

rechargeable Li-S batteries, interfacial reactions, electrochemical microenviornments

DOI Link

https://doi.org/10.61558/2993-074X.2907

Publication Date

2012-06-28

Online Available Date

2012-02-25

Revised Date

2012-02-20

Received Date

2011-11-08

Recommended Citation

Xin-Ping AI, Yu-Liang CAO, Han-Xi YANG. Simple Analysis and Possible Solutions of the Unusual Interfacial Reactions in Li-S batteries[J]. Journal of Electrochemistry, 2012 , 18(3): Article 5.
DOI: 10.61558/2993-074X.2907
Available at: https://jelectrochem.xmu.edu.cn/journal/vol18/iss3/5

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