Charge-discharge performance of rechargeable organic-magnesium batteries using glyme-based electrolytes

H. Senoh, H. Sakaebe, H. Tokiwa, M. Uchida, H. Sano, M. Yao, T. Kiyobayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationBatteries Beyond Lithium-Ion
EditorsD. A. Steingart, V. Thangadurai, V. Kalra, Y. Xing, V. Di Noto
PublisherElectrochemical Society Inc.
Pages33-39
Number of pages7
Edition19
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2015
Externally publishedYes
EventSymposium on Batteries Beyond Lithium-Ion - 228th ECS Meeting - Phoenix, United States
Duration: Oct 11 2015Oct 15 2015

Publication series

NameECS Transactions
Number19
Volume69
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Batteries Beyond Lithium-Ion - 228th ECS Meeting
Country/TerritoryUnited States
CityPhoenix
Period10/11/1510/15/15

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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