A nickel-iron oxygen evolution electrochemical catalyst for electrolyzing seawater and its preparation method and application
An electrochemical and catalyst technology, applied in the field of nickel-iron oxygen evolution electrochemical catalyst and its preparation, to achieve the effect of simple and efficient reaction process
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example 1
[0029] Example 1. In-situ preparation of nickel-iron oxygen evolution catalyst: Commercial carbon cloth was treated in oxygen plasma for 30 s at 10 W power to obtain carbon cloth A. 4 mmol of nickel chloride hexahydrate and 6 mmol of ferrous sulfate heptahydrate were mixed according to the mass ratio of 2:3, and diluted in deionized water to obtain dispersion B. Weigh 5 mmol of urea solid, disperse it in the dispersion B of nickel chloride hexahydrate and ferrous sulfate heptahydrate, stir thoroughly for 30 min, and ultrasonicate for 30 min to completely dissolve the solid, and obtain dispersion C. Immerse A in dispersion C, heat up to 60 °C at a heating rate of 2 °C / min, react at a constant temperature for 2 h, and cool down to room temperature naturally. Take the product out, wash it with deionized water, and dry it in a drying oven.
example 2
[0030] Example 2. In-situ preparation of nickel-iron oxygen evolution catalyst: Commercial carbon cloth was treated in oxygen plasma for 100 s at 25 W power to obtain carbon cloth A. Nickel chloride hexahydrate and ferrous sulfate heptahydrate were mixed according to the mass ratio of 2:3, and diluted in deionized water to obtain dispersion B. Weigh 10 mmol of urea solid, disperse it in the dispersion B of nickel chloride hexahydrate and ferrous sulfate heptahydrate, stir thoroughly for 30 min, and ultrasonicate for 30 min to completely dissolve the solid to obtain dispersion C. Immerse A in the dispersion B, heat up to 60 °C at a heating rate of 2 °C / min, react at a constant temperature for 4 h, and cool down to room temperature naturally. Take the product out, wash it with deionized water, and dry it in a drying oven.
example 3
[0031] Example 3. In-situ preparation of nickel-iron oxygen evolution catalyst: Commercial carbon cloth was treated in oxygen plasma for 500 s at 10 W power to obtain carbon cloth A. 4 mmol of nickel chloride hexahydrate and 6 mmol of ferrous sulfate heptahydrate were mixed according to the mass ratio of 2:3, and diluted in deionized water to obtain dispersion B. Weigh 5 mmol of urea solid, disperse it in the dispersion B of nickel chloride hexahydrate and ferrous sulfate heptahydrate, stir thoroughly for 30 min, and ultrasonicate for 30 min to completely dissolve the solid, and obtain dispersion C. Immerse A in dispersion C, heat up to 70 °C at a heating rate of 2 °C / min, react at a constant temperature for 2 h, and cool down to room temperature naturally. Take the product out, wash it with deionized water, and dry it in a drying oven.
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