3 V Cu-Al Rechargeable Battery Enabled by Highly Concentrated Aprotic Electrolyte
Wang, H; Yu, DYW
| HERO ID | 6310633 |
|---|---|
| In Press | No |
| Year | 2019 |
| Title | 3 V Cu-Al Rechargeable Battery Enabled by Highly Concentrated Aprotic Electrolyte |
| Authors | Wang, H; Yu, DYW |
| Volume | 2 |
| Issue | 7 |
| Page Numbers | 4936-4942 |
| Abstract | Cu and Al foils are commonly used in lithium-ion batteries as current collectors. They are inactive and do not participate in the charge-discharge reactions but take up resources and space within a cell. Herein, we demonstrate a proof of concept to turn the Cu and Al foils into active materials by constructing a Cu-Al full cell, with Cu undergoing stripping/deposition reactions at the cathode and Al alloying with lithium at the anode. Stable cycle performance is possible with the use of a highly concentrated electrolyte; a 3 V cell exhibits excellent cycle stability for more than 200 cycles in 6 M LiTFSI DMC electrolyte. Our Cu-Al battery can give a volumetric energy density in the range 79-156 Wh L-1 comparable to that of state-of-the-art all-vanadium redox-flow batteries. The use of inexpensive Cu and Al as active materials can also potentially reduce the cost of energy storage. |
| Doi | 10.1021/acsaem.9b00627 |
| Wosid | WOS:000477074700041 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal:ACS APPLIED ENERGY MATERIALS 2574-0962 |
| Is Public | Yes |
| Keyword | Cu stripping Cu deposition; Cu-Al battery; aprotic electrolyte; anion-exchange membrane |