Method for pre-lithiation of the negative electrode in lithium ion batteries
AssigneeGM Global Technology Operations LLC
InventorsMeng Jiang, Xingcheng Xiao, Mei Cai, Li Yang, Bob R. Powell, JR.
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Abstract
A Li-ion battery is disclosed, the Li-ion battery including an anode, a cathode, a lithium donor formed from a Li-containing material, and an electrolyte in communication with the anode, the cathode, and the lithium donor. The lithium donor may be incorporated into the anode, incorporated into the cathode, a layer formed on either an anode side or a cathode side of a separator of the battery. The lithium donor is formed from Li-containing material insensitive to oxygen and aqueous moisture.
Claims20
A Li-ion battery comprising:
- an anode;
- a cathode;
- a lithium donor formed from a Li-containing material;
- and
- an electrolyte in communication with the anode, the cathode, and the pre-lithiated donor.
A Li-ion battery comprising:
- an anode;
- a cathode;
- a separator for separating the anode and the cathode;
- a lithium donor formed from a Li-containing material, wherein the lithium donor is one of incorporated in the anode, incorporated in the cathode, a layer formed on the separator adjacent the anode, and a layer formed on the separator adjacent the cathode;
- and
- an electrolyte in communication with the anode, the cathode, and the lithium donor.
A method of forming a Li-ion battery comprising the steps of:
- mixing a powdered Li-containing material with a non-aqueous liquid to form a slurry, the lithium donor formed from one of a compound having a formula of Li3-xMxN (where M is one of Co, Cu, and Ni and where x is from about 0.01 to about 0.6), Li2x-1MNx (where M is one of Mn, Fe, and V and where x is from about 1 to about 4), LixMVO4 (where M is one of Zn, Co, Ni, or Cd and where x is from about 1 to about 8);
- coating the slurry on one of a current collector and a side of a separator of a Li-ion battery;
- and
- drying the slurry coated on one of the current collector and the side of the separator to form a lithium donor.
Dependencies are inferred from the claim text.