X-ray Absorption Spectroscopy Characterization of a Li/S Cell
AbstractThe X-ray absorption spectroscopy technique has been applied to study different stages of the lithium/sulfur (Li/S) cell life cycle. We have investigated how speciation of S in Li/S cathodes changes upon the introduction of CTAB (cetyltrimethylammonium bromide, CH3(CH2)15N+(CH3)3Br−) and with charge/discharge cycling. The introduction of CTAB changes the synthesis reaction pathway dramatically due to the interaction of CTAB with the terminal S atoms of the polysulfide ions in the Na2Sx solution. For the cycled Li/S cell, the loss of electrochemically active sulfur and the accumulation of a compact blocking insulating layer of unexpected sulfur reaction products on the cathode surface during the charge/discharge processes make the capacity decay. A modified coin cell and a vacuum-compatible three-electrode electro-chemical cell have been introduced for further in-situ/in-operando studies. View Full-Text
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Ye, Y.; Kawase, A.; Song, M.-K.; Feng, B.; Liu, Y.-S.; Marcus, M.A.; Feng, J.; Cairns, E.J.; Guo, J.; Zhu, J. X-ray Absorption Spectroscopy Characterization of a Li/S Cell. Nanomaterials 2016, 6, 14.
Ye Y, Kawase A, Song M-K, Feng B, Liu Y-S, Marcus MA, Feng J, Cairns EJ, Guo J, Zhu J. X-ray Absorption Spectroscopy Characterization of a Li/S Cell. Nanomaterials. 2016; 6(1):14.Chicago/Turabian Style
Ye, Yifan; Kawase, Ayako; Song, Min-Kyu; Feng, Bingmei; Liu, Yi-Sheng; Marcus, Matthew A.; Feng, Jun; Cairns, Elton J.; Guo, Jinghua; Zhu, Junfa. 2016. "X-ray Absorption Spectroscopy Characterization of a Li/S Cell." Nanomaterials 6, no. 1: 14.