CuO/rGO composite material having efficient electrocatalysis oxygen reducing performance
A composite material and hydroxide technology, applied in the field of electrocatalytic materials, can solve the problem of unexplored materials, and achieve the effects of simple post-processing process, low price, and cost reduction.
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Embodiment 1
[0044] In a small 100 mL beaker, while stirring with a magnetic stirrer, add 40 mL of deionized water, and slowly add CuCl 2 2H 2 O 1.71 g (0.01 mol), NaOH 1.60 g (0.04 mol), stirred for 5 min to form a light blue homogeneous liquid, add 10 mL of absolute ethanol, 5 mL of ethylene glycol and 4 mL of 6 g / L graphene oxide to fully stir the solution ( about 10 min), transfer the reaction solution into a 100 ml autoclave, heat to 180°C, take it out after 24 hours at a constant temperature, wash the product three times with absolute ethanol, then wash three times with double distilled water, put into vacuum distillation The device was distilled under reduced pressure at 50 °C for 20 min to obtain a black powdery solid, which is the CuO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance. It was detected that the mass ratio of CuO and rGO in the CuO / rGO composite was about 100:3.
[0045] Characterized by SEM (eg figure 2 As shown), the nano...
Embodiment 2
[0047] In a small 100 mL beaker, while stirring with a magnetic stirrer, add 40 mL of deionized water, and slowly add CuCl 2 2H 2 O 0.01mol, NaOH 0.04mol, stirred for 5 minutes, a light blue homogeneous liquid was formed, added 10mL of absolute ethanol, 5mL of ethylene glycol and 8.3mL of 6g / L graphene oxide, fully stirred the solution (about 10 min), and Transfer the reaction solution into a 100 ml autoclave, heat to 180°C, take it out after 24 hours at a constant temperature, wash the product three times with absolute ethanol, then wash three times with double distilled water, put it into a vacuum distillation device at 50°C to reduce After pressure distillation for 20 min, a black powdery solid was obtained, which is the CuO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance. It was detected that the mass ratio of CuO and rGO in the CuO / rGO composite was about 100:5.
[0048] Characterized by SEM (eg figure 2 As shown), the nano-Cu...
Embodiment 3
[0050] In a small 100 mL beaker, while stirring with a magnetic stirrer, add 40 mL of deionized water, and slowly add CuCl 2 2H 2 O 0.01mol, NaOH 0.04mol, stirred for 5 minutes, a light blue uniform liquid was formed, added 10mL of absolute ethanol, 5mL of ethylene glycol and 6.7mL of 6g / L graphene oxide, fully stirred the solution (about 10 min), and Transfer the reaction solution into a 100 ml autoclave, heat to 180°C, take it out after 24 hours at a constant temperature, wash the product three times with absolute ethanol, then wash three times with double distilled water, put it into a vacuum distillation device at 50°C to reduce After pressure distillation for 20 min, a black powdery solid was obtained, which is the CuO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance. It was detected that the mass ratio of CuO and rGO in the CuO / rGO composite was about 100:4.
[0051] Characterized by SEM (eg figure 2 As shown), the nano-CuO is...
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