| abstract |
The invention concerns a device for storing electric power comprising an electrode layer (3, 11) and a collector layer (1) associated with the electrode layer, characterized in that it also comprises a barrier layer (2, 12) made of metal nitride, the barrier layer (2, 12) being interposed between the electrode layer (3, 11) and the collector layer (1), the barrier layer (2, 12) being adapted to prevent diffusion of ions contained in an electrolyte (14, 16) up to the collector layer (1). |