Mesoporous graphite/silicon dioxide composite counter electrode for dye sensitized solar cells and method for preparing mesoporous graphite/silicon dioxide composite counter electrode

The invention discloses a mesoporous graphite/silicon dioxide composite counter electrode for dye sensitized solar cells and a method for preparing the mesoporous graphite/silicon dioxide compound counter electrode, the composite counter electrode consists of an electric conduction substrate and a mesoporous graphite/silicon dioxide composite membrane, and is prepared in the following steps that: firstly, adding silicon dioxide nano-particles into graphite oxide suspension, and putting in the hydrazine hydrate solution after ultrasonic dispersion for reduction, and heating the mixture at 60-110 DEG C for reaction for 1-12 hours, thus forming the mesoporous graphite/silicon dioxide nanocomposite suspension; and dripping the suspension onto the clean electric conduction substrate for forming the mesoporous graphite/silicon dioxide membrane, regulating the thickness of the membrane to 1-20mum through repeating the operation, namely forming the composite counter electrode. The mesoporous graphite/silicon dioxide