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A QUT-led team of international researchers has made a breakthrough in the development of a type of battery that is much safer and cheaper than the batteries currently charging our smart devices.
The factors affecting electron transfer at semiconductor electrodes sensitised with molecules and in contact with redox electrolytes have been studied for decades. Here, the influence of molecular structural factors enhancing or slowing down electron transfer rates at dye-sensitised electrode interfaces are analysed by Marcus theory. Back electron transfer between TiO2 electrons and oxidised redox mediators are slowed down by reducing electronic coupling using alkyl chains or by minimising attractive intermolecular forces. Electron transfer between surface-bound molecules and the electron dono...
Electron transfer is one of the fundamentally important reactions in physics, chemistry, and biology. Numerous chemical and electrochemical reactions require fast electron transfer between an electron donor and an acceptor to successfully convert energy from one form to another. In particular, interfacial electron transfer dyenamics at a substrate decorated with surface-bound dye molecules and immersed in an electrolyte containing redox molecules have obtained great attention, arising in dye-sensitised solar cells and catalytic systems. At such semiconductor-liquid interfaces, efficient conver...