| abstract |
(57) [PROBLEMS] To provide an electrolyte composition excellent in durability and charge transport ability, and a photoelectric conversion element and a photoelectrochemical cell exhibiting excellent durability and photoelectric conversion characteristics due to the use of this electrolyte composition. provide. An electrolyte composition comprising a quaternary salt electrolyte represented by the following general formula (I): [Chemical 1] In general formula (I), Q represents an atomic group that forms a 5- or 6-membered aromatic cation with a nitrogen atom, R 1 represents a hydrogen atom or a substituent, R 2 represents a substituent, and n1 represents represents an integer of 0 to 5, X 1 represents a counter ion, n2 represents an integer of 0 to 4. n1 When R is 2 or more, the plurality of R 2 may be the same or different, and at least one of R 1 and R 2 is a substituent represented by the following general formula (II). [Chemical 2] In the general formula (II), L represents a divalent linking group that links the aromatic cation and V, and V represents a carboxylic acid group, a sulfonic acid group, It represents a proton dissociation product of a phosphonic acid group or a phosphoric acid group. |