Abstract: The invention provides a lithium-ion battery electrode piece and a lithium-ion battery including the same. The electrode piece includes an electrode active material layer disposed on the surface of the current collector and a protective layer disposed on the surface of the electrode active material layer. The protective layer is composed of metal oxide layers and conductive layers alternately stacked in the horizontal direction. The area ratio of the metal oxide layers to the conductive layers is 4:1-1:4, and the thickness ratio is 0.5:1-1:1. According to the invention, by regulating the shape and ratio of the high temperature stability material and the conductive active material on the electrode piece in the process of coating the protective layer, the amount of the two coating materials is precisely controlled to implement the precise regulation of the high temperature stability and rate performance of the electrode piece.

Abstract: An electrical energy storage module for a vehicle includes at least one electrical energy storage battery that has at least one negative electrode at least partially composed of lithium-metal nitride. The electrical energy storage module also includes at least one ammonia sensor for detecting a release of ammonia due to the decomposition of the lithium-metal nitride of the negative electrode in the presence of air or humidity.