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US 9,287,056 B2Granted
Electrolyte for photoelectric conversion element, photoelectric conversion element using the electrolyte, and dye-sensitized solar cell using the electrolyte
AssigneeThe Yokohama Rubber Co., Ltd.
InventorTsukasa Maruyama
Life of this patent
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Abstract
An object of the present invention is to provide an electrolyte for a photoelectric conversion element that can achieve superior moisture resistance. The electrolyte for a photoelectric conversion element of the present invention is an electrolyte for a photoelectric conversion element which contains an organic salt compound (A) and a lamellar clay mineral (B), wherein the above-mentioned organic salt compound (A) contains more than 50 mass %, in terms of cationic weight, of an organic salt compound (a1) having a specific cation.
Claims6
An electrolyte for a photoelectric conversion element comprising:
- an organic salt compound (A) having a cation represented by formula (1) or (2) below, and a lamellar clay mineral (B), wherein
- the organic salt compound (A) comprises more than 50 mass %, in terms of cationic weight, of an organic salt compound (a1), and
- the organic salt compound (a1) is:
- a compound in which at least one of R2, R3 and an optional substituent group on R1 in formula (1) below is a hydrocarbon group having from 5 to 20 carbon atoms and optionally having a hetero atom, or a compound in which at least one of R4, R5, R6 and R7 in formula (2) below is a hydrocarbon group having from 5 to 20 carbon atoms and optionally having a hetero atom:
- wherein, in formula (1), R1 is a hydrocarbon group having from 1 to 20 carbon atoms and optionally having a hetero atom, and may include a substituent having from 1 to 20 carbon atoms and optionally having a hetero atom;
- R2 and R3 are each independently a hydrogen atom or a hydrocarbon group having from 1 to 20 carbon atoms and optionally having a hetero atom;
- however, the R3 moiety is absent if the nitrogen atom contains a double bond;
- in formula (2), Q is a nitrogen atom, an oxygen atom, a phosphorus atom or a sulfur atom, and R4, R5, R6 and R7 are each independently a hydrogen atom or a hydrocarbon group having from 1 to 20 carbon atoms and optionally having a hetero atom;
- however, the R7 moiety is absent if Q is an oxygen atom or a sulfur atom and, if Q is a sulfur atom, R4 and R5 may be linked, and
- the organic salt compound (A) comprises less than or equal to 50 mass % in terms of cationic weight, of an organic salt compound (a2), and
- the organic salt compound (a2) is a compound in which the hydrocarbon groups represented by R2 and R3 in formula (1) above are hydrocarbon groups having from 1 to 4 carbon atoms and optionally having a hetero atom, or a compound in which the hydrocarbon groups represented by R4, R5, R6 and R7 in formula (2) above are hydrocarbon groups having from 1 to 4 carbon atoms and optionally having a hetero atom;
- and either or both of the organic salt compound (a1) and organic salt compound (a2) has a thiocyanate anion.
9 more elements
Dependencies are inferred from the claim text.