Patent ID: 7235328

Claim:
An electrochemical generator element ( 102 ) successively comprising a first electrode layer of one polarity ( 114 ), a first electrolyte layer ( 110 ), an electrode layer of a reverse polarity ( 108 ), a second electrolyte layer ( 112 ) and a second electrode layer of said one polarity ( 116 ), said electrode layers of said one polarity ( 114 , 116 ) being connected by a connection in parallel, the element further comprising current collectors ( 118 , 120 ) connected to the first and second electrode layers of said one polarity ( 114 , 116 ), characterized in that the thickness of said first electrode layer of said one polarity ( 114 ) is different from the thickness of said second electrode layer of said one polarity ( 116 ), in that the first and second electrode layers of said one polarity are positive electrode layers ( 114 , 116 ), and in that the electrode layer of said reverse polarity is a negative electrode layer, in that said negative electrode layer ( 108 ) is made of lithium or of a lithium-based alloy, and said electrolyte layers ( 110 , 112 ) are made of a solid polymer, and in that the thickness of said first positive electrode layer ( 114 ) is between 80 μm and 200 μm.