Cathode compositions and method for lithium-ion cell construction having a lithum compound additive, eliminating irreversible capacity loss
Cathode compositions for use in lithium-ion cells and other metal-ion cells, which have a lithium compound or other metal compound additives, matching the selected chemistry of the cell, which additives eliminate irreversible capacity loss.
1 . A cathode composition for use in the cathode of lithium-ion cells, which has a lithiated cathode material and a lithium compound additive therein, and said additive reduces or eliminates irreversible capacity loss of said cells.
2 . A cathode composition for use in the cathode of lithium-ion cells which has a lithiated cathode material and a lithium compound additive therein, which additive is selected from a group comprising: lithium carbonate, lithium sulfite, lithium oxide, lithium nitride, lithium borate, lithium boride, lithium fluoride, lithium oxolate, and their mixtures.
3 . A cathode composition as defined in claim 1 or 2 in which said lithium compound additive is present in the range of 0.1% to 10% by weight.
4 . A cathode composition as defined in claim 1 in which, said cathode composition includes:
a. Polyvinylidene Fluoride/Hexafluoropropylene
b. Plasticizer or an electrolyte
c. LiCoO 2
d. Li 2 CO 3
e. Super-P carbon
5 . A cathode composition as defined in claim 1 or 2 in which said composition contains a lithium compound additive in the range molecularly equivalent to 2% to 40% of the lithium ions contained in the lithiated cathode material.
6 . A cathode composition for lithium-ion cells as described in claim 1 , in which said lithium compound additive contains more than 10% of lithium by weight.
7 . A cathode composition for metal-ion cells, which has a metal compound additive and said additive reduces or eliminates irreversible capacity loss of said cells.
8 . A cathode composition for metal-ion cells, which has a metal compound additive, which is selected from a group comprising:
Na 2 CO 3 , Na 2 SO 3 , Na 2 O, Na 3 BO 3 , and NaF, and their mixtures.
9 . A lithium-ion cell which includes a composite cathode having a composition as described in clams 1, or 2, or 3, or 4, or 5, or 6.
10 . A lithium-ion cell as described in claims 1 to 6 , which has balanced electrical capacities of electrodes.
11 . A metal-ion cell which includes a composite cathode having a composition as described in claims 7 , or 8 .
12 . A metal-ion cell as described in claims 7 , or 8 , which has balanced electrical capacities of electrodes.