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New Materials Replace Platinum For Solar Power Batteries

Author: Source: Datetime: 2016-10-08 13:53:31
Scientists at the University of Michigan have announced that they have developed a low-cost cathode material for inverter solar power generator systems that can replace the precious metal platinum previously required for the production of dye-sensitized solar power batteries. Related research online published in the scientific journal "Applied Chemistry (International Edition)" on. Dye-sensitized solar cells have the characteristics of good stability, high theoretical efficiency, simple process and environmentally friendly production process, and are considered as one of the most promising new solar power batteries technologies. Flexible solar cell based on it is good for flexibility, light weight, easy to produce large area, it is a hot spot in recent years. But in large-scale promotion and application of the technology before there are many obstacles need to clear. Precious metal platinum is one of them. Although platinum in the dye-sensitized solar power batteries PV module wiring patented in the manufacture of small amount, but its price of $ 1,500 an ounce or to a certain extent, pushed up the price of the final product for large-scale promotion of increased difficulty.

To this end, responsible for the study of the University of Michigan Institute of Materials and Engineering, Professor team, specializing in the development of a new stuff can substitute platinum, the researchers call it honeycomb 3D graphene. To create this unique structure of the graphene material, Hu Yunhang team to lithium oxide and carbon monoxide chemical reaction, resulting in a lithium carbonate (Li2CO3) and honeycomb graphene mixture. Then, the lithium carbonate particles in the entire structure are removed with an acid, leaving the honeycomb-like graphene. The researchers found that the honeycomb 3D graphene has excellent electrical conductivity, high catalytic activity, in the energy storage and conversion potential. In order to confirm the conjecture, they will dye-sensitized solar cells in the platinum electrodes replaced by honeycomb 3D graphene electrodes. Under the same sunshine conditions measured results show that the use of new materials, solar cell photoelectric conversion efficiency of 7.8%, and the use of platinum in general dye-sensitized solar power batteries 8% is very close.
solar power generator
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