Solid electrolyte cell
AssigneeSony Corporation
InventorsShuji Goto, Mamoru Hosoya, Takahiro Endo
Life of this patent
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Abstract
A solid electrolyte cell in which cell characteristics are not deteriorated even on overdischarge to the cell voltage of 0V, such that the shape of the cell encapsulated in the laminate film is maintained. The cell includes a cathode containing a compound represented by the general formula LixFe1-yMyPO4 where 0.05≦x≦1.2, 0≦y≦0.8, and M is at least one selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, an anode and a solid electrolyte. An electrode unit 1 comprised of the cathode and the anode layered together with interposition of the solid electrolyte is encapsulated with a laminate film 2.
Claims4
A solid electrolyte cell comprising:
- a cathode containing a compound represented by the general formula LixFe1-yMyPO4 where 0.05≦x≦1.2, 0≦y≦0.8, and M is at least one selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb;
- an anode;
- and
- a solid electrolyte;
- wherein an electrode unit comprised of said cathode and the anode are layered together with interposition of said solid electrolyte is encapsulated with a laminate film;
- and
- wherein said cathode contains, as a cathode active material having a discharge potential nobler than that of the compound represented by the general formula LixFe1-yMyPO4, at least one of a compound represented by the general formula LixCo1-yMyO2, where 0<x<2, 0≦y<1 and M is at least one selected from the group consisting of Ni, Fe, Mn, Cu, Zn, Al, Sn, B, Ga, Cr, V, Ti, Mo, W, Mg, Ca, Sr and Hb, a compound represented by the general formula LixNi1-yMyO2, where 0<x<2, 0≦y<1 and M is at least one selected from the group consisting of Co, Fe, Mn, Cu, Zn, Al, Sn, B, Ga, Cr, V, Ti, Mo, W, Mg, Ca, Sr and Hb, and a compound represented by the general formula LixMn2-yMyO4, where 0<x<2, 0≦y<2 and M is at least one selected from the group consisting of Ni, Fe, Co, Cu, Zn, Al, Sn, B, Ga, Cr, V, Ti, Mo, W, Mg, Ca, Sr and Hb.
Dependencies are inferred from the claim text.