Electrical transport properties of [(1 - )succinonitrile:poly(ethylene oxide)]-LiCFSO-Co[tris-(2,2'-bipyridine)](TFSI)-Co[tris-(2,2'-bipyridine)](TFSI) solid redox mediators.

A solid redox mediator (solid electrolyte) with an electrical conductivity () greater than 10 S cm is an essential requirement for a dye-sensitized solar cell in the harsh weather of Gulf countries. This paper reports the electrical properties of solid redox mediators prepared using highly dissociable ionic salts: Co[tris-(2,2'-bipyridine)](TFSI), Co[tris-(2,2'-bipyridine)](TFSI), and LiCFSO as a source of Co, Co, and Li ions, respectively, in a solid matrix: [(1 - )succinonitrile:poly(ethylene oxide)], where = 0, 0.5, and 1 in weight fraction.

Structural, Thermal, and Electrical Properties of Poly(Ethylene Oxide)-Tetramethyl Succinonitrile Blend for Redox Mediators.

An all-solid−state dye-sensitized solar cell is one of the non-fossil fuel-based electrochemical devices for electricity generation in a high-temperature region. This device utilizes a redox mediator, which is a fast ion-conducting solid polymer electrolyte (SPE). The SPE makes the device economical, thinner, and safer in high-temperature regions.

Electrical Transport, Structural, Optical and Thermal Properties of [(1-)Succinonitrile: PEO]-LiTFSI-Co(bpy)(TFSI)-Co(bpy)(TFSI) Solid Redox Mediators.

The solar cell has been considered one of the safest modes for electricity generation. In a dye-sensitized solar cell, a commonly used iodide/triiodide redox mediator inhibits back-electron transfer reactions, regenerates dyes, and reduces triiodide into iodide. The use of iodide/triiodide redox, however, imposes several problems and hence needs to be replaced by alternative redox.

Tetramethyl Succinonitrile as a Solid Plasticizer in a Poly(ethylene oxide) -LiI-I Solid Polymer Electrolyte.

Dye-sensitized solar cell (DSSC) is a promising alternative to the commercially available amorphous silicon-based solar cell because of several advantageous properties. A DSSC with a fast ion conducting solid polymer electrolyte is required for the arid atmosphere of Gulf countries. In this work, a new matrix, poly(ethylene oxide)-tetramethyl succinonitrile blend to synthesize a blend-LiI-I solid polymer electrolyte for the DSSC application has been proposed.