Method for preparing porous carbon/binary transition metal oxide microsphere material
A technology of transition metals and oxides, applied in the field of preparation of supercapacitor electrode materials, can solve the problems of complex preparation methods, low specific capacitance, poor cycle stability, etc., and achieve good dispersion, high specific capacity value, and improved electrochemical performance Effect
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Embodiment 1
[0013] Measure according to the volume ratio of glycerin:isopropanol=1:3, mix well, then add Ni(NO 3 ) 2 ·6H 2 O:Co(NO 3 ) 2 ·6H 2 Add Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O, after stirring the mixture to a pink transparent solution, press F127:Ni(NO 3 ) 2 ·6H 2 Add F127 at a mass ratio of O=1:9, and keep stirring until the white powder is completely dissolved in a transparent solution. Transfer to a 100mL reactor and heat at 180°C for 6h. The obtained product was washed several times with distilled water and ethanol, and dried at 80°C for 12h to obtain NiCo glyceride nanospheres. The NiCo glyceride nanospheres were calcined in a tube furnace fed with air from room temperature to 350 °C at a rate of 5 °C / min, then kept for 2 h, and finally cooled down to room temperature naturally, and the obtained black substance was binary transition metal oxide NiCo 2 o 4 . The binary transition metal oxide NiCo 2 o 4 Disperse in 0.05M glucose solution, pour it into ...
Embodiment 2
[0015] Measure according to the volume ratio of glycerin:isopropanol=1:4, mix well, and then use Ni(NO 3 ) 2 ·6H 2 O:Co(NO 3 ) 2 ·6H 2 Add Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O, after stirring the mixture to a pink transparent solution, press F127:Ni(NO 3 ) 2 ·6H 2 Add F127 at a mass ratio of O=5:9, and keep stirring until the white powder is completely dissolved in a transparent solution. Transfer to a 100mL reactor and heat at 180°C for 6h. The obtained product was washed several times with distilled water and ethanol, and dried at 80°C for 12h to obtain NiCo glyceride nanospheres. NiCo glyceride nanospheres were calcined in a tube furnace fed with air from room temperature to 350 °C at a rate of 3 °C / min, then kept for 3 h, and finally cooled down to room temperature naturally. The black substance obtained was binary transition metal oxide NiCo 2 o 4 . NiCo 2 o 4 Dispersed in 0.05M glucose solution, poured into a 100mL reaction kettle and heated at ...
Embodiment 3
[0017] Measure by the volume ratio of glycerin: isopropanol=1:5, mix well, then add Ni(NO 3 )2 ·6H 2 O:Co(NO 3 ) 2 ·6H 2 Add Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O, after stirring the mixture to a pink transparent solution, press F127:Ni(NO 3 ) 2 ·6H 2 Add F127 at a mass ratio of O=10:9, and keep stirring until the white powder is completely dissolved in a transparent solution. Transfer to a 100mL reactor and heat at 180°C for 6h. The obtained product was washed several times with distilled water and ethanol, and dried at 80°C for 12h to obtain NiCo glyceride nanospheres. NiCo glyceride nanospheres were calcined in a tube furnace fed with air from room temperature to 350 °C at a rate of 1 °C / min, then kept for 4 hours, and finally cooled down to room temperature naturally. The black substance obtained was binary transition metal oxide NiCo 2 o 4 . NiCo 2 o 4 Dispersed in 0.05M glucose solution, poured into a 100mL reaction kettle and heated at 170°C for ...
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