Patent ID: 8142933
Filing Date: 2012-03-27
Classification: H01M,Y02E,Y02P

Abstract:
1. A battery comprising: a carbonaceous anode comprising graphite particles selected from the group consisting of synthetic graphite particles, carbon-coated graphite particles, carbonized petroleum coke particles, carbon-coated coke particles and mixtures thereof; and a lithium manganese oxide spinel cathode with a valence above 3.5, wherein the carbonaceous anode is obtained by: wherein the cathode is not fully discharged at the cut-off cell voltage and wherein the initial coulombic efficiency of the anode is at least 2% lower than that of the cathode when each electrode is evaluated against a Li metal and wherein the initial coulombic efficiency of the carbonaceous anode is evaluated in a half cell against lithium metal, and the useable specific capacity of the anode is greater than 250 mAh/g measured in a cell against the Li metal at a cut-off voltage of 1.5 volts.