DENDRITE-FREE LITHIUM ELECTRODE AND METHOD OF MAKING THE SAME

摘要

The present invention provides a method of modifying a surface of a lithium electrode, e.g. a negative lithium electrode, for a battery cell. The method comprises the step of applying a thin layer of a carbonaceous material onto the surface of the lithium electrode. The method further comprises the step of applying a pressure to the thin layer and to the surface to promote tight contact between the surface and the thin layer. The method further comprises the step of storing the thin layer and the lithium electrode in an atmosphere comprising carbon dioxide (CO2) gas for a period of time sufficient to significantly lithiate carbon of the carbonaceous material into an intercalation compound having the formula LixC6. A battery cell, e.g. a secondary (rechargeable) battery cell, comprises the lithium electrode made by the method of the present invention.