Direct View for the Deformation Evolution of Sulfur Electrode during Li-S Battery Cycling

【Author】

WANG Yu-Hui;JIN Jun;GUO Zhan-Sheng;WEN Zhao-Yin

【Institution】

Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University;CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences;CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences;Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University;CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences

【Abstract】

An experimental set-up was developed which could observe electrode deformation and electrochemical reaction in-situ during the charge-discharge cycling of lithium-sulfur battery. The positive bending deformation during charge and discharge was monitored in real time. It was found that the positive curvature increased during discharge and reduced during open circuit. The curvature would recover to the original state during charge period. As electrochemical reaction proceeds, the electrolyte near positive electrode gradually became yellow and deepened due to polysulfide dissolution of discharge products. Results of surface and section morphology observation on sulfur electrode before and after cycle using scanning electron microscope (SEM) were consistent with curvature changes during cycling and verified the volumetric expansion of sulfur electrode.

【Keywords】

lithium-sulfur battery;bending deformation;electrode expansion;transparent battery;sulfur electrode

References

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Springer Journals Database

Total: 25 articles

  • [1] Shin-Ichi Tobishima;;Hideo Yamamoto;;Minoru Matsuda, Study on the reduction species of sulfur by alkali metals in nonaqueous solvents, Electrochimica Acta,
  • [2] Yajuan Li;;Hui Zhan;;Suqin Liu;;Kelong Huang;;Yunhong Zhou, Electrochemical properties of the soluble reduction products in rechargeable Li/S battery, Journal of Power Sources,
  • [3] Xiangming He;;Jianguo Ren;;Li Wang;;Weihua Pu;;Changyin Jiang;;Chunrong Wan, Expansion and shrinkage of the sulfur composite electrode in rechargeable lithium batteries, Journal of Power Sources,
  • [4] Jun Jin;;Zhaoyin Wen;;Guoqiang Ma;;Yan Lu;;Kun Rui, Mesoporous carbon/sulfur composite with polyaniline coating for lithium sulfur batteries, Solid State Ionics,

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