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Counter electrode of nickel iron selenide dye-sensitized solar cell

A technology for solar cells and dye sensitization, which is applied in the field of counter electrodes of iron-nickel selenide dye-sensitized solar cells to achieve the effects of superior catalytic performance, enhanced contact force, and reduced dosage

Active Publication Date: 2018-11-23
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention synthesizes a ternary compound in situ by a one-step hydrothermal method——iron-nickel selenide dye-sensitized solar cell counter electrode, and can obtain a photoelectric conversion efficiency equivalent to that of a platinum electrode, but there is no relevant literature report so far

Method used

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  • Counter electrode of nickel iron selenide dye-sensitized solar cell
  • Counter electrode of nickel iron selenide dye-sensitized solar cell
  • Counter electrode of nickel iron selenide dye-sensitized solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 12mL of deionized water, put it in a beaker with a volume of 50mL, and add 0.025 mmol NiCl 2 ·6H 2 O, 0.05 mmol FeCl 3 ·6H 2 O and 0.1 mmol Se, 10 mL NH was added dropwise with constant stirring 3 ·H 2 O, 3mL N 2 H 4 ·H 2 O, after continuing to stir for 15min, transfer the solution in the beaker to the autoclave, place a piece of 1.5×3cm ITO glass conductive side down and place it at an angle of 45° with the inner wall of the reactor, the reactor is covered with a shell and placed in In a 120°C oven for 12 hours, the reaction was carried out at a constant temperature, cooled to room temperature naturally, taken out, rinsed with deionized water and ethanol for several times, and then air-dried to obtain a black iron-nickel-selenide counter electrode.

[0017] The remaining black precipitate in the kettle was centrifuged, washed three times with deionized water and ethanol, and freeze-dried for subsequent characterization.

[0018] figure 1 It is the XRD pat...

Embodiment 2

[0022] Take 10mL of deionized water, put it in a beaker with a volume of 50mL, and add 0.025 mmol NiCl 2 ·6H 2 O, 0.05 mmol FeCl 3 ·6H 2 O and 0.1 mmol Se, 10 mL NH was added dropwise with constant stirring 3 ·H 2 O, 2mL N 2 H 4 ·H 2 O, after continuing to stir for 15min, transfer the solution in the beaker to the autoclave, place a piece of 1.5×3cm ITO glass conductive side down and place it at an angle of 45° with the inner wall of the reactor, the reactor is covered with a shell and placed in In a 120°C oven for 12 hours, the reaction was carried out at a constant temperature, cooled to room temperature naturally, taken out, rinsed with deionized water and ethanol for several times, and then air-dried to obtain a black iron-nickel-selenide counter electrode.

Embodiment 3

[0024] Take 15mL of deionized water, put it in a beaker with a volume of 50mL, and add 0.025 mmol NiCl 2 ·6H 2 O, 0.05 mmol FeCl 3 ·6H 2 O and 0.1 mmol Se, 10 mL NH was added dropwise with constant stirring 3 ·H 2 O, 5mL N 2 H 4 ·H 2 O, after continuing to stir for 15min, transfer the solution in the beaker to the autoclave, place a piece of 1.5×3cm ITO glass conductive side down and place it at an angle of 45° with the inner wall of the reactor, the reactor is covered with a shell and placed in In a 100°C oven for 12 hours, the reaction was carried out at a constant temperature, cooled to room temperature naturally, washed several times with deionized water and ethanol, and then air-dried to obtain a black iron-nickel selenide counter electrode.

[0025] with commercial TiO 2 The slurry was used as a photoanode, and N719 was used as a sensitizer, and was assembled with the iron-nickel selenide counter electrode prepared in Example 1 to form a sandwich structure batter...

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Abstract

The invention discloses a counter electrode of a nickel iron selenide dye-sensitized solar cell. The counter electrode is fabricated by taking nickel chloride, iron chloride and selenium as raw materials and through in-situ synthesis by a one-step method. The raw materials are available, the fabrication method is simple, the obtained counter electrode of the nickel iron selenide dye-sensitized solar cell has relatively good photoelectric conversion efficiency and is expected to substitute a platinum electrode.

Description

technical field [0001] The invention belongs to the field of electrode materials, in particular to a counter electrode of an iron-nickel-selenide dye-sensitized solar cell. Background technique [0002] Due to the advantages of low battery cost, high photoelectric conversion efficiency, and no pollution to the environment, dye-sensitized solar cells have been favored by researchers from all over the world since their development. It is very likely to replace silicon cells and become the pillar of the next generation photovoltaic industry product. The platinum electrode has good electrical conductivity, electrocatalytic activity and excellent stability, and proved to be a good counter electrode for dye-sensitized solar cells. However, as a precious metal, platinum has low reserves and high price, and is especially vulnerable to I 3 - / I - Electrolyte corrosion not only deteriorates the battery performance, but also limits the large-scale commercial application of dye-sens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/042
CPCH01G9/2022Y02E10/542
Inventor 李亚峰毛海娟魏明灯
Owner FUZHOU UNIV
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