Coin-shaped all solid battery
A coin-shaped all solid battery including: (a) a power generating unit including a first electrode, a second electrode and a solid electrolyte interposed therebetween; (b) a metallic case facing to the first electrode to serve as a first electrode terminal; (c) a metallic sealing plate facing to the second electrode to serve as a second electrode terminal; (d) a gasket insulating the metallic case from the metallic sealing plate; and at least one of (e-1) a first conductive layer interposed between the first electrode and the metallic case to be integrated with the first electrode and (e-2) a second conductive layer interposed between the second electrode and the sealing plate to be integrated with the second electrode, wherein the conductive layer includes porous metal and the porous metal includes a molded metal powder.
1 . A coin-shaped all solid battery comprising:
(a) a power generating unit including a first electrode, a second electrode and a solid electrolyte interposed therebetween;
(b) a metallic case facing to said first electrode to serve as a first electrode terminal;
(c) a metallic sealing plate facing to said second electrode to serve as a second electrode terminal;
(d) a gasket insulating said metallic case from said metallic sealing plate; and
at least one of (e-1) a first conductive layer interposed between said first electrode and said metallic case to be integrated with said first electrode and (e-2) a second conductive layer interposed between said second electrode and said metallic sealing plate to be integrated with said second electrode,
wherein said conductive layer comprises porous metal and said porous metal comprises a molded metal powder.
2 . The coin-shaped all solid battery in accordance with claim 1 , wherein said metal powder comprises primary particles linked in a form of filament.
3 . The coin-shaped all solid battery in accordance with claim 1 , wherein said porous metal comprises at least one selected from the group consisting of aluminum, titanium, iron, cobalt, nickel, copper, zinc, molybdenum, silver and an alloy containing at least one of these elements as a main component.
4 . The coin-shaped all solid battery in accordance with claim 1 , wherein said conductive layer covers 95% or more of a surface of said electrode integrated with the conductive layer on the conductive layer side.
5 . The coin-shaped all solid battery in accordance with claim 1 , wherein said conductive layer covers an entire surface of said electrode integrated with the conductive layer on the conductive layer side.