Anode-free rechargeable battery
AssigneeBattelle Memorial Institute
InventorsJi-Guang Zhang, Jiangfeng Qian, Wu Xu, Wesley A. Henderson
Life of this patent
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Abstract
An anode-free rechargeable battery is disclosed. The battery includes an anode current collector and a cathode containing an active cation Mn+, where n=1, 2, or 3. The anode-free rechargeable battery further includes a separator placed between the anode current collector and the cathode. The anode-free rechargeable battery also includes an electrolyte including a salt or salt mixture containing an active cation Mn+ dissolved in a solvent or solvent mixture.
Claims36
An anode-free rechargeable battery comprising:
- a. an anode current collector;
- b. a cathode containing an active cation Mn+, where n=1, 2, or 3;
- c. a separator placed between the anode current collector and the cathode;
- and
- d. an electrolyte including a salt or salt mixture dissolved in a solvent, solvent mixture or polymer.
An electrolyte comprising 2.5-8 M concentration of lithium salt LiFSI dissolved in a DME solvent to enable dendrite free Li deposition with a Coulombic efficiency greater than about 95% at current densities greater than about 3 mAh/cm2.
A method of forming an anode-free rechargeable battery comprising:
- a. forming an anode current collector and a cathode;
- and
- b. placing a separator between the anode current collector and the cathode, wherein the separator is infused with an electrolyte including a lithium salt dissolved in a non-aqueous solvent or polymer;
- wherein an anode is formed in situ on an surface of the anode current collector facing the separator during the charging process of the battery, and wherein the anode is consumed during a discharging process of the battery.
An anode-free rechargeable battery comprising:
- a. a copper anode current collector;
- b. a cathode including lithium containing compounds;
- c. a separator placed between the anode current collector and the cathode;
- and
- d. an electrolyte including a lithium salt dissolved in a non-aqueous solvent or polymer, wherein the separator is infused with the electrolyte including the lithium salt dissolved in the non-aqueous solvent or polymer;
- wherein the lithium salt is LiFSI dissolved in a DME solvent, a concentration of the LiFSI in the DME is between 1.1-8 M, and the battery has a Coulombic Efficiency of at least 95% after the first cycle.
A method of forming an anode-free rechargeable battery comprising:
- a. forming a copper anode current collector and a lithium containing cathode;
- b. disposing a separator between the anode current collector and the cathode, wherein the separator is infused with an electrolyte including a LiFSI lithium salt dissolved in a DME solvent;
- wherein an anode is formed in situ at an interface on a surface of the anode current collector facing to the separator during the charging process of the battery, and
- wherein the anode is consumed during a discharging process of the battery.
Dependencies are inferred from the claim text.