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Mirror-surface-shaped cobalt sulfide counter electrode and application thereof

A cobalt sulfide and electrode technology, which is applied in the field of dye-sensitized solar cells, can solve the problems of restricting the large-scale application of dye-sensitized solar cells, cumbersome preparation steps, and expensive platinum, so as to achieve increased photon capture efficiency, high product purity, Inexpensive effect

Inactive Publication Date: 2021-05-07
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high price and scarcity of platinum, the large-scale application of dye-sensitized solar cells is greatly limited.
Cobalt sulfide has been widely studied as a substitute for platinum electrodes and used in the counter electrode of dye-sensitized solar cells due to its diverse morphology, low price, and high catalytic efficiency. However, in previous methods, cobalt sulfide counter electrodes or The preparation steps are cumbersome, or the inherent dark properties greatly limit its application in the field of indoor solar cells

Method used

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  • Mirror-surface-shaped cobalt sulfide counter electrode and application thereof
  • Mirror-surface-shaped cobalt sulfide counter electrode and application thereof
  • Mirror-surface-shaped cobalt sulfide counter electrode and application thereof

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Embodiment Construction

[0022] A method for preparing a mirror-like cobalt sulfide counter electrode, comprising the following steps:

[0023] 1) Dissolve cobalt sulfate heptahydrate and mercaptobenzimidazole in a molar ratio of 1:2 in ethylene glycol solution, and mix well;

[0024] 2) Transfer the obtained mixed solution to a 50ml polytetrafluoroethylene lining, put a piece of clean ITO conductive glass with a size of 1.5cm×3cm, put it into the reactor and package it;

[0025] 3) Put the packaged reaction kettle in an oven at 180°C for 24 hours, take it out, cool it down to room temperature naturally, wash it three times with water and ethanol as solvents, and then dry it at 60°C to obtain a mirror-like cobalt sulfide Electrode.

[0026] The obtained mirror-like cobalt sulfide counter electrode is used to prepare a dye-sensitized solar cell, and its preparation method comprises:

[0027] 1) 1g P25-TiO 2 The powder is uniformly dispersed in ethanol solution to obtain TiO 2 slurry;

[0028] 2) A...

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Abstract

The invention discloses a mirror-surface-shaped cobalt sulfide counter electrode and application thereof. The mirror-surface-shaped cobalt sulfide counter electrode is prepared by adopting a hydrothermal method under the condition of not adding any surfactant or guiding agent, and the mirror-surface-shaped cobalt sulfide counter electrode is used for preparing a dye-sensitized solar cell. The preparation process is simple, the product purity is high, secondary absorption and utilization of sunlight by a photo-anode can be enhanced through the mirror surface reflection effect, the photoelectric conversion efficiency is improved, and the application potential of the dye-sensitized solar cell in a room is better facilitated.

Description

technical field [0001] The invention belongs to the technical field of dye-sensitized solar cells, and in particular relates to a mirror-shaped cobalt sulfide counter electrode and an application thereof. Background technique [0002] Dye-sensitized solar cells have become the most promising solar cells for indoor applications due to their simple process, environmental friendliness, low energy consumption during preparation, low cost, and high efficiency under weak light conditions. According to the current research results, the platinum electrode has high catalytic activity and relatively low overpotential, and it is an early counter electrode used in dye-sensitized solar cells. However, the high price and scarce reserves of platinum greatly limit the large-scale application of dye-sensitized solar cells. Cobalt sulfide has been widely studied as a substitute for platinum electrodes and used in the counter electrode of dye-sensitized solar cells due to its diverse morpholo...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/042H01G9/00
CPCH01G9/2022H01G9/042H01G9/0029Y02E10/542
Inventor 孙逊昌沈雨谢锋炎
Owner HEFEI UNIV OF TECH
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