TY - GEN
T1 - Charge-discharge performance of rechargeable organic-magnesium batteries using glyme-based electrolytes
AU - Senoh, H.
AU - Sakaebe, H.
AU - Tokiwa, H.
AU - Uchida, M.
AU - Sano, H.
AU - Yao, M.
AU - Kiyobayashi, T.
N1 - Publisher Copyright:
© 2015 The Electrochemical Society.
PY - 2015
Y1 - 2015
N2 - Rechargeable batteries composed of metallic Mg negative electrode, glyme-based electrolytes and organic positive electrode (2,5-dimethoxy-1,4-benzoquinone (DMBQ)) were proposed. The charge-discharge performance of the batteries was investigated at 30°C. The discharge capacity reaches ca. 200 mAh g(DMBQ)-1 in Mg(TFSA)2/monoglyme and diglyme electrolytes. This capacity suggests that a multi-electron redox reaction takes place in these electrolytes. Although the hysteresis between charge-discharge voltage plateaus are quite large in Mg(TFSA)2/diglyme, triglyme and tetraglyme electrolytes, the discharge voltage increases drastically after a few cycles in Mg(TFSA)2/monoglyme electrolyte. One of the reasons is that the overpotential of the Mg negative electrode for the Mg-dissolution is quite small. Although the capacity substantially decreases upon cycling, the cell using Mg(TFSA)2/monoglyme retains the high voltage at the discharge even after 20 cycles.
AB - Rechargeable batteries composed of metallic Mg negative electrode, glyme-based electrolytes and organic positive electrode (2,5-dimethoxy-1,4-benzoquinone (DMBQ)) were proposed. The charge-discharge performance of the batteries was investigated at 30°C. The discharge capacity reaches ca. 200 mAh g(DMBQ)-1 in Mg(TFSA)2/monoglyme and diglyme electrolytes. This capacity suggests that a multi-electron redox reaction takes place in these electrolytes. Although the hysteresis between charge-discharge voltage plateaus are quite large in Mg(TFSA)2/diglyme, triglyme and tetraglyme electrolytes, the discharge voltage increases drastically after a few cycles in Mg(TFSA)2/monoglyme electrolyte. One of the reasons is that the overpotential of the Mg negative electrode for the Mg-dissolution is quite small. Although the capacity substantially decreases upon cycling, the cell using Mg(TFSA)2/monoglyme retains the high voltage at the discharge even after 20 cycles.
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U2 - 10.1149/06919.0033ecst
DO - 10.1149/06919.0033ecst
M3 - Conference contribution
AN - SCOPUS:84959419077
T3 - ECS Transactions
SP - 33
EP - 39
BT - Batteries Beyond Lithium-Ion
A2 - Steingart, D. A.
A2 - Thangadurai, V.
A2 - Kalra, V.
A2 - Xing, Y.
A2 - Di Noto, V.
PB - Electrochemical Society Inc.
T2 - Symposium on Batteries Beyond Lithium-Ion - 228th ECS Meeting
Y2 - 11 October 2015 through 15 October 2015
ER -