Rechargeable Divalent Metal Batteries Having Fast Interfacial Charge Transfer Kinetics
AssigneeUniversity of Maryland, College Park
InventorsChunsheng WANG, Singyuk HOU, Xiao JI
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Abstract
The present disclosure provides rechargeable divalent metal batteries comprising a multidentate compound. In particular, the presence of a multidentate compound in the electrolyte of the rechargeable divalent metal batteries significantly increases the interfacial charge transfer kinetics and/or suppresses undesired side reactions on both cathodes and metal anodes. It is believed that these effects are at least in part due to solvation sheath reorganization by the multidentate compound. Other aspects of the disclosure include methods for reducing a charge transfer overpotential and methods for increasing a charge transfer kinetics in rechargeable divalent metal batteries.
Claims21
1-42. (canceled)
A rechargeable battery comprising:
- a cathode;
- an anode comprising a divalent metal;
- and
- an electrolyte composition comprising a solvent, an electrolytic salt, and a multidentate compound.
A rechargeable battery having an energy density of at least about 400 Wh kg−1 and an average coulombic efficiency of at least 80%, wherein said rechargeable battery comprises an anode comprising a divalent metal.
A method for reducing an anode charge transfer overpotential for a divalent metal anode in a rechargeable metal battery, said method comprising adding a multidentate compound to an electrolyte of said rechargeable metal battery.
Dependencies are inferred from the claim text.