A kind of alkaline system direct urea fuel cell anode catalyst and preparation method thereof
A fuel cell and urea technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of low uniform dispersion of active component nickel, affect the electrochemical reaction activity of urea oxidation, and complex preparation methods, etc. Chemical reactivity, good electrical conductivity, and the effect of improving catalytic activity
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Embodiment 1
[0028] Weigh 0.0364g (0.21mmol) of triaminophenyl borate hydrochloride (ABA), and dissolve it in 835µL of 6mol / L hydrochloric acid solution to prepare an ABA solution.
[0029]Add the above-mentioned ABA solution, 274µL (3mmol) aniline (AN) and 241µL deionized water to 2mL of 10wt% polyvinyl alcohol (PVA) solution in sequence, stir in a water bath at 55°C for 30min, until the solution is clear, place in an ice-water bath , cooled to 0°C, 1.65mL 2mol / L ammonium persulfate (APS) solution was added dropwise, stirred quickly and evenly, poured into the mold, and polymerized at room temperature for 12 hours to prepare polyvinyl alcohol-polyaniline conductive hydrogel polymer film.
[0030] After the formed polymer film was washed with deionized water, 0.3g was weighed and placed in 15mL solution containing 0.067mol / L nickel chloride and 0.4mol / L urea, and placed in a polytetrafluoroethylene-lined In a high-pressure reactor, after heating to 80°C for 18 hours of hydrothermal reacti...
Embodiment 2
[0034] Weigh 0.0303g (0.175mmol) of triaminophenyl borate hydrochloride (ABA), and dissolve it in 835µL of 6mol / L hydrochloric acid solution to prepare an ABA solution.
[0035] Add the above-mentioned ABA solution, 229 µL (2.5 mmol) aniline (AN) and 561 µL deionized water to 2 mL of 12 wt% polyvinyl alcohol (PVA) solution in sequence, stir for 30 min under heating in a water bath at 55 °C, until the solution is clear, place in an ice-water bath , cooled to 0°C, added dropwise 1.38mL 2mol / L ammonium persulfate (APS) solution, stirred quickly and evenly, poured into the mold, and polymerized at room temperature for 24 hours to prepare polyvinyl alcohol-polyaniline conductive hydrogel polymerization object film.
[0036] After washing the formed polymer film with deionized water, weigh 0.2g and place it in 15mL solution containing 0.03mol / L nickel chloride and 0.2mol / L urea, and put it into a Teflon-lined In a high-pressure reactor, after heating to 100 ° C for 24 hours of hydr...
Embodiment 3
[0039] Weigh 0.0242g (0.14mmol) of triaminophenyl borate hydrochloride (ABA), and dissolve it in 835µL of 6mol / L hydrochloric acid solution to prepare an ABA solution.
[0040] Add the above-mentioned ABA solution, 183µL (2mmol) aniline (AN) and 882µL deionized water to 2.5mL 8wt% polyvinyl alcohol (PVA) solution in sequence, stir for 30min under heating in a water bath at 55°C, until the solution is clear, place in an ice-water bath , cooled to 0°C, added dropwise 1.10mL 2mol / L ammonium persulfate (APS) solution, stirred quickly and evenly, poured into the mold, and polymerized at room temperature for 12 hours to prepare polyvinyl alcohol-polyaniline conductive hydrogel polymerized object film.
[0041] After the formed polymer film was washed with deionized water, 0.5g was weighed and placed in 15mL solution containing 0.13mol / L nickel chloride and 0.67mol / L urea, and placed in a polytetrafluoroethylene-lined In a high-pressure reactor, after heating to 120 ° C for 12 hours...
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