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Toward “rocking-chair type” Mg–Li dual-salt batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ichitsubo, Tetsu Okamoto, Shinya Kawaguchi, Tomoya Kumagai, Yu Oba, Fumiyasu Yagi, Shunsuke Goto, Natsumi Doi, Takayuki Matsubara, Eiichiro |
| Copyright Year | 2015 |
| Abstract | High energy-density rechargeable batteries are strongly demanded from the viewpoint of energy and environmental concern. This work is devoted to fundamental electrochemistry on a novel concept of rechargeable batteries, “rocking-chair type” Mg–Li dual-salt batteries (DSBs), where both Mg and Li cations are carrier ions. In this system, dangerous dendritic growth is drastically suppressed by co-electrodeposition of Mg and Li, and Mg–Li alloys can be used as anode materials with high electrical capacities. As a DSB cathode material that can accommodate both Mg and Li cations, we use a spinel oxide MgCo2O4, in which an eccentric insertion mechanism, the “intercalation & push-out” process, occurs. Mg insertion occurs at 2.9 V vs. Mg2+/Mg and Li insertion occurs at 3.1 V vs. Li+/Li, being consistent with ab initio calculations, and its capacity approximately amounts to 150–200 mA h g−1. In the combination of MgCo2O4 and Mg50Li50 alloys, the cell voltage during discharge is as high as about 2–3 V. The concept of rocking-chair type DSB systems provides a new strategy for future safe rechargeable batteries combining high energy/power densities. |
| Starting Page | 10188 |
| Ending Page | 10194 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C5TA01365H |
| Volume Number | 3 |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/getauthorversionpdf/C5TA01365H |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c5/ta/c5ta01365h/c5ta01365h1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C5TA01365H |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
