Cell for electric double layer capacitors and process for manufacturing such a cell
First Claim
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1. A cell for an electric double layer capacitor, comprising:
- a membrane formed of a solid protonic conducting electrolyte separating two electrodes; and
two electrodes each comprising a composite electrode including a mixture of predetermined proportions of at least one electronic conductor and at least one solid electrolyte, said solid electrolyte of said composite electrode comprising a protonic conductor chosen from a group consisting of uranyl phosphate H3 OUO2 PO4.3H2 O, zirconium phosphate Zr(HOP4)2 nH2 O, derivatives of these compounds and protonic conductors with high protonic conductivity having a low electronic conductivity.
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Abstract
A method for forming a cell and a cell for an electric double layer capacitor includes a membrane formed from a solid protronic conducting electrolyte separating two electrodes. Each electrode is a composite electrode formed by a mixture of at least one electronic conductor and a solid electrolyte. Preferably, the solid electrolyte of the composite electrodes and the membrane is chosen from a group consisting of uranyl phosphate H3 O UO2 PO4 3H2), zirconium phosphate Zr(HPO4)2 nH2 O, or derivatives of these compounds.
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Citations
24 Claims
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1. A cell for an electric double layer capacitor, comprising:
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a membrane formed of a solid protonic conducting electrolyte separating two electrodes; and two electrodes each comprising a composite electrode including a mixture of predetermined proportions of at least one electronic conductor and at least one solid electrolyte, said solid electrolyte of said composite electrode comprising a protonic conductor chosen from a group consisting of uranyl phosphate H3 OUO2 PO4.3H2 O, zirconium phosphate Zr(HOP4)2 nH2 O, derivatives of these compounds and protonic conductors with high protonic conductivity having a low electronic conductivity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of manufacturing a cell for an electric double layer capacitor, comprising the following steps:
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forming a composite electrode powder comprising an electronic conductor and a solid electrolyte; forming a membrane powder including a solid protonic conducting electrolyte; preforming a membrane by pressing said membrane powder; simulteanously sintering two electrodes having said composite electrode powder, and said membrane; positioning two metal terminators on said electrodes, respectively; and encapsulating said cell. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A cell for an electric double layer capacitor comprising:
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a membrane formed of a solid protonic conducting electrolyte separating two electrodes, said solid protonic conducting electrolyte of said membrane comprising a protonic conductor chosen from a group consisting of uranyl phosphate H3 OUO2 PO4.3H2 O, zirconium phosphate Zr(HPO4)2 nH2 O, derivatives of these compounds and protonic conductors with high protonic conductivity having a low electronic conductivity; and two electrodes each comprising a composite electrode including a mixture of predetermined proportions of at least one electronic conductor and at least one solid electrolyte. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification