Platinum alloy electrode and method for producing the same

A platinum alloy and electrode technology, applied in the field of dye-sensitized solar cells, can solve the problems of Pt dissolution, poisoning, and high electrode cost, and achieve the effects of stable performance, uniform distribution and dense surface structure

Inactive Publication Date: 2008-09-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost of the Pt counter electrode itself is relatively high, and there are still m

Method used

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  • Platinum alloy electrode and method for producing the same
  • Platinum alloy electrode and method for producing the same
  • Platinum alloy electrode and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Prepare 100ml H 2 PtCl 6 and RuCl 3 mixed aqueous solution, H 2 PtCl 6 The concentration is 1.93×10 -3 mol L -1 , RuCl 3 The concentration is 2.7×10 -3 mol L -1 ;

[0023] (2) 0.5g solid (NH 4 ) 2 HPO 4 and 1.5 g solid Na 2 HPO 4 Add to the above mixed solution in turn, and stir at room temperature;

[0024] (3) Heat the above mixed solution to a near-boiling state, until the smell of ammonia gradually disappears, and the solution changes from yellow to colorless, add 5% NaOH (or Na 2 CO 3 Saturated aqueous solution) the pH value of the solution was adjusted to 8.

[0025] (4) Dilute the solution obtained in the step (3) to 100ml, and conduct electrodeposition with the ITO conductive glass as the cathode. Current density 25mA·cm -2 , the electrodeposition time is 1.5 minutes, and the electrolyte temperature is 70°C;

[0026] (5) In the step (4), the commercial ITO conductive glass is soaked in 0.5% NaOH aqueous solution for 5 hours before use, the...

Embodiment 2

[0031] (1) Prepare 100ml H 2 PtCl 6 and RuCl 3 mixed aqueous solution, H 2 PtCl 6 The concentration is 0.9×10 -3 mol L -1 , RuCl 3 The concentration is 1.5×10 -3 mol L -1 ;

[0032] (2) 0.6g solid (NH 4 ) 2 HPO 4 and 2.0 g solid Na 2 HPO 4 Add to the above mixed solution in turn, and stir at room temperature;

[0033](3) The above-mentioned mixed solution is heated to a near-boiling state until the smell of ammonia gradually disappears, and the solution changes from yellow to colorless, adding Na 2 CO 3 The saturated aqueous solution was adjusted to pH 7.

[0034] (4) Dilute the solution obtained in the step (3) to 100ml, and conduct electrodeposition with the ITO conductive glass as the cathode. Current density 15mA·cm -2 , electrodeposition time 2.0 minutes, electrolyte temperature 80 ℃;

[0035] (5) In the step (4), the commercial ITO conductive glass is soaked with 1% NaOH aqueous solution for 3 hours before use, then washed with distilled water, acetone...

Embodiment 3

[0039] (1) Prepare 100ml H 2 PtCl 6 and RuCl 3 mixed aqueous solution, H 2 PtCl 6 The concentration is 2×10 -3 mol L -1 , RuCl 3 The concentration is 3.5×10 -3 mol L -1 ;

[0040] (2) 0.55g solid (NH 4 ) 2 HPO 4 and 1.7 g solid Na 2 HPO 4 Add to the above mixed solution in turn, and stir at room temperature;

[0041] (3) The above-mentioned mixed solution is heated to a near-boiling state until the smell of ammonia gradually disappears, and the solution changes from yellow to colorless, adding Na 2 CO 3 Adjust the pH value of the saturated aqueous solution to 7.5.

[0042] (4) Dilute the solution obtained in the step (3) to 100ml, and conduct electrodeposition with the ITO conductive glass as the cathode. Current density 30mA·cm -2 , the electrodeposition time is 1.0 minutes, and the electrolyte temperature is 75°C;

[0043] (5) In the described step (4), the commercial ITO conductive glass is soaked with 2% NaOH aqueous solution for 2 hours before use, then...

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Abstract

The invention relates to a platinum alloy electrode and a preparation method of the platinum alloy. Mixed water solution of H2PtCl6 and RuCl3 is prepared and is added with (NH4)2HPO4 and Na2HPO4; the mixed solution is heated to a nearly boiling state when smell of ammonia gradually disappears and the color of solution is changed from yellow into colorless, and 5% of NaOH or Na2CO3 saturated water solution is added and the pH value of the solution is adjusted to 7-8; electrodeposit is carried out by taking ITO conductive glass as a cathode, and the current density is 10-30mAcm<-2>, the electrodeposit time is 1-2 minutes, and the electrolyte temperature is 70-80 DEG C; a deposited Pt-Ru/ITO electrode is cleanly washed by distilled water, dried and kept in a dry environment with normal temperature before the battery is assembled. The dimension of iron particle of the Pt-Ru/ITO of the invention is nano-class, with compact surface structure and uniform distribution; the Pt-Ru/ITO of the invention has good electro-catalytic activity on the electro-chemical deoxidization of I3<->, has more stability performance in DSSC electrolyte compared with a Pt electrode. The platinum alloy electrode of the invention is used as an optical cathode in the dye sensitized solar battery, and the preparation method of the electrode can be applied to the field of fuel battery.

Description

technical field [0001] The invention relates to a platinum alloy electrode and a preparation method thereof, and is particularly applied in the technical field of dye-sensitized solar cells. The electrode preparation method can also be applied to the field of fuel cells. Background technique [0002] Solar energy is an inexhaustible and inexhaustible clean energy source, which is full of charm for human beings. Using solar cells to directly convert solar energy into electrical energy has always been a goal pursued by scientists. [0003] Dye-Sensitized Solar Cells (DSSC) is a new type of solar cells. In the early 1990s, the Swiss Institute of Technology in Lausanne A low cost, high efficiency solar cell based on dye-sensitized collagen TiO published by the professor and his research team 2 film.Nature, 1991, 353:737 Regan B O, M, et al. employing nanoporous TiO with high specific surface area 2 The film is used as a semiconductor electrode, and the organic complex of...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/20H01L31/0224H01L31/18H01M4/86H01M4/88H01M14/00C03C17/06
CPCY02E10/542Y02E60/50Y02P70/50
Inventor 田建华赵沧燕单忠强刘小东
Owner TIANJIN UNIV
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