TY - JOUR
T1 - Reaction behavior of a silicide electrode with lithium in an ionic-liquid electrolyte
AU - Domi, Yasuhiro
AU - Usui, Hiroyuki
AU - Sugimoto, Kai
AU - Gotoh, Kazuma
AU - Nishikawa, Kei
AU - Sakaguchi, Hiroki
N1 - Funding Information:
This work was partially supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant numbers JP19K05649, JP19H02817, JP20H00399, JP17K06017, and JP18K04965) and the NIMS Joint Research Hub Program. The authors thank K. Shinoda for his assistance with the TEM observations.
Publisher Copyright:
Copyright © 2020 American Chemical Society.
PY - 2020/9/8
Y1 - 2020/9/8
N2 - Silicides are attractive novel active materials for use in the negative-electrodes of next-generation lithium-ion batteries that use certain ionic-liquid electrolytes; however, the reaction mechanism of the above combination is yet to be clarified. Possible reactions at the silicide electrode are as follows: deposition and dissolution of Li metal on the electrode, lithiation and delithiation of Si, which would result from the phase separation of the silicide, and alloying and dealloying of the silicide with Li. Herein, we examined these possibilities using various analysis methods. The results revealed that the lithiation and delithiation of silicide occurred.
AB - Silicides are attractive novel active materials for use in the negative-electrodes of next-generation lithium-ion batteries that use certain ionic-liquid electrolytes; however, the reaction mechanism of the above combination is yet to be clarified. Possible reactions at the silicide electrode are as follows: deposition and dissolution of Li metal on the electrode, lithiation and delithiation of Si, which would result from the phase separation of the silicide, and alloying and dealloying of the silicide with Li. Herein, we examined these possibilities using various analysis methods. The results revealed that the lithiation and delithiation of silicide occurred.
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U2 - 10.1021/acsomega.0c03357
DO - 10.1021/acsomega.0c03357
M3 - Article
AN - SCOPUS:85091034621
SN - 2470-1343
VL - 5
SP - 22631
EP - 22636
JO - ACS Omega
JF - ACS Omega
IS - 35
ER -
