Iodine-doped carbon material serving as cathode of dye-sensitized solar cell
A technology for solar cells and dye sensitization, applied in the field of iodine-doped carbon materials, can solve the problems of reducing battery performance, potential loss, complex process and the like, and achieve the effects of low cost, good stability and simple process
Image
Examples
preparation example Construction
[0033] 1) The preparation methods of these iodine-doped carbon materials are simple and can be prepared by different methods.
[0034] 2) The iodine-doped graphitized carbon prepared by high-temperature sintering of graphene oxide not only preserves the layered structure of graphitized carbon, but also has a large specific surface and good electrical conductivity and catalytic activity, and can prepare high-efficiency low cost battery. The iodine-doped carbon material prepared from non-graphitizable carbon has improved its catalytic activity due to the introduction of iodine element, and the efficiency of the prepared battery has also been greatly improved.
[0035] 3) The iodine-doped carbon material prepared by the present invention can be mixed with carbon black in different proportions as the cathode material of the dye-sensitized solar cell, so that the conductivity of the cathode material can be adjusted by adjusting the proportion of iodine element in the cathode and a...
Embodiment 1
[0037] Example 1: Dye-sensitized solar cell prepared with iodine-doped graphite sheet as cathode
[0038] Sinter 200mg of graphite oxide flakes and 1g of elemental iodine in a tube furnace at 900°C for 3 hours under a nitrogen atmosphere, and then place them in an oven at 70°C for 48 hours to allow the remaining elemental iodine to volatilize completely. The measured iodine atoms The content is 3.43%. Iodine-doped graphene was then coated onto conductive glass as a cathode, using TO with adsorbed dye molecules 2 It is the anode of the battery, and the dye molecule is N719.
[0039] figure 1 It is the scanning electron micrograph of the iodine-doped graphene prepared in embodiment 1. The obtained I-V curve is as Figure 4 As shown, the photoelectric conversion efficiency reaches 2.95%, while the photoelectric conversion efficiency of undoped graphene is only 0.06%, and the photoelectric conversion efficiency of the platinum electrode as the cathode is 4.6% under the same co...
Embodiment 2
[0040] Embodiment 2: Prepare iodine-doped graphene with solution reaction
[0041] Dissolve elemental iodine in ethanol, disperse graphene oxide in water, mix the two and react at 50-100°C for 24 hours, then centrifuge and wash with a large amount of ethanol, and dry in an oven at 50°C.
[0042] figure 2 It is the scanning electron micrograph of the iodine-doped graphene prepared in embodiment 2.
PUM
Login to View More Abstract
Description
Claims
Application Information
- IPC
- H01B1/04; H01B13/00; H01G9/042; H01G9/20; H01M14/00; H01L51/44; H01L51/46
- CPC
- Y02E10/50; Y02E10/542; Y02E10/549
- Inventors
- 崔光磊; 段玉龙