Back to results
US 6,319,632 B1Granted
Active material for lithium batteries
AssigneeJapan Storage Battery Co., Ltd.
InventorKhalil Amine
Life of this patent
Estimating the term…
Abstract
An active material of formula LiCu1+xPO4 (0≦x≦1) which could be used as cathode material in lithium primary and secondary batteries.
Claims4
An active material for batteries comprising a meterial expressed by formula LiCu1+xPO4 (0≦x≦1).
A method of preparing the active material comprising the steps of:
- mixing and pressing ground Li2CO3, CuO and (NH4)2HPO4 at 400 kgf/cm2±50 kgf/cm2;
- and
- heating the mixture in at least two steps at 450° C.±50° C. and then at 800° C.±100° C. to produce an active material comprising a meterial expressed by formula LiCu1+xPO4 (0≦x≦1).
Dependencies are inferred from the claim text.