A Synergistically Modified Composite Electrocatalyst and Its Application in Ethanol Oxidation
An electrocatalyst and synergistic modification technology, applied in the field of electrocatalytic materials, can solve the problems of the development limitation of ethanol fuel cell technology, lack of high-activity anode catalyst, low catalytic activity, etc., and achieve excellent catalytic activity, abundant active sites, and technology. simple effect
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Embodiment 1
[0042] In this embodiment Pd / Co(CO 3 ) 0.5 Synthesis, characterization and electrocatalytic performance of OH / CFC catalyst:
[0043] (1) Catalyst preparation:
[0044] Using carbon cloth (CFC) as the carrier, its thickness is 0.33mm, and its surface density is ~120g / m 2 . Carbon cloth (1×4cm 2 ) were washed with ethanol, hydrochloric acid solution (1M) and deionized water for 10 minutes, and then 40 mL of CoCl 2 ·6H 2 The deionized aqueous solution of O (0.1M), urea (0.5M) and ammonium fluoride (0.2M) was placed in a hydrothermal kettle with a volume of 50mL, and was subjected to constant temperature treatment at 100°C for 10 hours, and then naturally cooled to room temperature to prepare the sample After being thoroughly cleaned, vacuum-dry at room temperature for 3 hours to obtain a hydrothermal sample; the hydrothermal sample is immersed in 3mL H 2 PdCl 4 (0.001M) in an aqueous solution, kept at a constant temperature of 55°C for 18h, and the obtained sample was ful...
Embodiment 2
[0054] In this example Pd / (Co,Ni)(CO 3 ) 0.5 Synthesis, characterization and electrocatalytic performance of 0H / CFC catalyst:
[0055] (1) Catalyst preparation: carbon cloth (CC, 1×4cm 2 ) as a carrier, after being ultrasonically cleaned with hydrochloric acid (1M), absolute ethanol and deionized water for 20 minutes each, dried in vacuum at room temperature and then put into a hydrothermal kettle containing a transition metal salt solution. The transition metal salts and their concentrations used in the hydrothermal reaction process are: CoCl 2 ·6H 2 O(0.04M), NiCl 2 ·6H 2 O (0.02M), urea (0.3M) and ammonium fluoride (0.12M), the hydrothermal reaction conditions are 130 ℃ constant temperature for 15 hours; the hydrothermal sample is immersed in 3mLH 2 PdCl 4 (0.002M) in aqueous solution, kept at a constant temperature of 65°C for 16h; 2 Heating to 160°C under atmosphere with a heating rate of 10°C / min, cooling to room temperature after constant temperature treatment f...
Embodiment 3
[0062] In this embodiment Pt / Co(CO 3 ) 0.5 Synthesis and electrocatalytic performance of OH / NF catalyst:
[0063] (1) Catalyst preparation: nickel foam (NF, 1×4cm 2 ) as a carrier, after being ultrasonically cleaned with hydrochloric acid (1M), absolute ethanol and deionized water for 20 minutes each, washed and dried with deionized water and absolute ethanol, and then put into a hydrothermal kettle equipped with a transition metal salt solution. The transition metal salts and their concentrations used in the hydrothermal reaction process are: CoCl 2 ·6H 2 The hydrothermal reaction conditions of O (0.01M), urea (0.05M), and ammonium fluoride (0.03M) were 90°C for 5 hours; the hydrothermal sample was immersed in 3mL K 2 PtCl 4(0.0015M) in an aqueous solution, kept at a constant temperature of 30°C for 8 hours; 2 Heating to 150°C under atmosphere with a heating rate of 10°C / min, and cooling to room temperature after constant temperature treatment for 1.5 hours to obtain th...
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