Preparation method of Pd(alpha)Pt fuel cell catalyst for direct formic acid fuel cell
A formic acid fuel cell and fuel cell technology, applied in battery electrodes, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of difficult application of catalyst synthesis and production, and achieve the effect of simple operation and enlarged synthesis scale
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0030] The invention provides a method for preparing a PdPt fuel cell catalyst for a direct formic acid fuel cell, comprising:
[0031] a) The carrier is dispersed in deionized water by alternating ultrasound and stirring to obtain a mixed solution;
[0032] b) adding an aqueous solution of a Pd precursor and a reducing agent to the mixed solution obtained in step a), and carrying out loading and reduction of Pd nanoparticles by using an impregnation reduction method to obtain a carrier suspension after loading Pd;
[0033] c) adding the halogen salt and the Pt precursor to the suspension obtained in step b), heating under stirring, and a displacement reaction occurs;
[0034] d) Use deionized water to wash away the Cl in the suspension obtained in step c) - , to obtain a PdPt fuel cell catalyst after filtration and drying.
[0035] According to the present invention, first, the carrier is stirred and dispersed in deionized water by alternating ultrasound to obtain a mixed s...
Embodiment 1
[0046] Firstly, Pd content of 20wt%Pd / C was prepared, and US CABOT Cabot carrier Vulcan XC-72R was used. The parameters of the carrier are:
[0047] Table 1 Parameters of the carrier
[0048] model
VXC-72
powdery
specific surface area
254
DBP oil absorption value (cc / 100g)
192
Particle size (nm)
30
Tinting strength (ASTM)
87
Density (g / l)
96.1
[0049] First, 80 mg of the carrier was dispersed in 200 mL of deionized water by ultrasonication for 0.5 h. Then add the precursor PdCl 2 aq (4mg Pd / mL, HCl5M), again by 0.5h ultrasonic dispersion. Use concentrated NaOH solution to adjust its pH to 10, add NaBH dropwise 4 solution (NaBH 4 80mg / deionized water 50mL) to reduce the precursor. After the reduction is completed, a replacement step is performed: adding H to the above-mentioned reduced Pd precursor 2 PtCl 6 solution (18.105mg Pt / mL) and KCl0.045g, stirred in a water...
Embodiment 2
[0055] Example 2: The sample preparation method is basically the same as in Example 1, except that KCl is replaced by 0.060 g of KBr. Test method is identical with embodiment 1, 0.5M H 2 SO 4 The cyclic voltammetry curve in solution is as follows figure 2 , CO adsorption and desorption experiments such as Figure 6 , 0.5M H 2 SO 4 The cyclic voltammetry test and chronoamperometry test results carried out with 0.5M HCOOH solution are shown in Figure 7 and Figure 8 ..
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com