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.
Life of this patent
Estimating the term…
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.
Claims16
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 a layer formed on a side of the separator adjacent one of the anode and the cathode, the Li-containing material including 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;
- a compound having a formula of Li2x-1MNx, where M is one of Mn, Fe, and V and where x is from about 1 to about 4;
- and
- a compound having a formula of LixMVO4, where M is one of Zn, Co, Ni, or Cd and where x is from about 1 to about 8;
- 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 Li-containing material 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 a side of a separator of a Li-ion battery;
- and
- drying the slurry coated on the side of the separator to form a lithium donor.
Dependencies are inferred from the claim text.