Preparation and application for non-noble metal electro-catalyst with core-shell structure
A non-precious metal, electrocatalyst technology, applied in structural parts, circuits, electrical components, etc., can solve the problems of high oxygen reduction activity of non-precious metal electrocatalysts, poor oxygen reduction activity of electrocatalysts, complicated preparation methods, etc. The effect of stable structure and simple preparation method
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Embodiment 1
[0031] Weigh 6g commercial carbon black (Ketjen EC-600, 20-30nm, 1400m 2 / g) dispersed in 600mL3mol / LHNO 3 In the solution, reflux in a water bath at 80° C. for 1 hour, filter with suction, wash with deionized water until neutral, and dry to obtain pretreated carbon black. Add 50 mg of meso‐tetrakis (4‐methoxyphenyl) porphyrin iron and 70 mL of chloroform into a 250 mL round bottom flask, ultrasonically dissolve the porphyrin, then add 100 mg of pretreated carbon black, ultrasonic for 30 min, 65 °C, The solvent was removed by rotary evaporation under the condition of 100 rpm, and the obtained solid was heated to 800° C. under the protection of an argon atmosphere, and was stabilized for 2 hours and then naturally cooled to room temperature. After 0.5MH 2 SO 4 The solution was stirred in a water bath at 80° C. for 6 h, then suction-filtered, washed with water until neutral, and dried in vacuum at 65° C. to finally obtain a black powdery solid.
[0032] As shown in Figure 1,...
Embodiment 2
[0037] Weigh 6g commercial carbon black (Ketjen EC-600, 20-30nm, 1400m 2 / g) dispersed in 600mL3mol / LHNO 3 In the solution, reflux in a water bath at 80° C. for 1 hour, filter with suction, wash with deionized water until neutral, and dry to obtain pretreated carbon black. Add 100mg meso‐tetrakis(4‐methoxyphenyl)porphyrin iron and 70mL chloroform into a 250mL round bottom flask, ultrasonically dissolve the porphyrin, then add 100mg pretreated carbon black, ultrasonicate for 30min, 65°C, The solvent was removed by rotary evaporation under the condition of 100 rpm, and the obtained solid was heated to 800° C. under the protection of an argon atmosphere, and was stabilized for 2 hours and then naturally cooled to room temperature. After 0.5MH 2 SO 4 The solution was stirred in a water bath at 80° C. for 6 h, then suction-filtered, washed with water until neutral, and dried in vacuum at 65° C. to finally obtain a black powdery solid.
[0038] Such as Figure 5 , the obtained ...
Embodiment 3
[0043] Weigh 6g commercial carbon black (Ketjen EC-600, 20-30nm, 1400m 2 / g) dispersed in 600mL3mol / LHNO 3 In the solution, reflux in a water bath at 80° C. for 1 hour, filter with suction, wash with deionized water until neutral, and dry to obtain pretreated carbon black. Add 1000mg meso‐tetrakis(4‐methoxyphenyl)porphyrin iron and 70mL chloroform into a 250mL round bottom flask, ultrasonically dissolve the porphyrin, then add 100mg pretreated carbon black, ultrasonicate for 30min, 65°C, The solvent was removed by rotary evaporation under the condition of 100 rpm, and the obtained solid was heated to 800° C. under the protection of an argon atmosphere, and was stabilized for 2 hours and then naturally cooled to room temperature. After 0.5MH 2 SO 4 The solution was stirred in a water bath at 80° C. for 6 h, then suction-filtered, washed with water until neutral, and dried in vacuum at 65° C. to finally obtain a black powdery solid.
[0044] The morphology and performance of...
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