A three-dimensional graphene-based composite electrode loaded with au nanoparticles on the surface and its preparation method and application
A composite electrode and graphene-based technology, which is applied in the field of composite electrodes for lithium-air batteries, can solve the problems of no three-dimensional graphene-based composite electrode materials, and achieve the effects of catalytic performance, low cost, and short cycle
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0041] Put nickel foam into a tube furnace, and raise the temperature to 1000°C at a rate of 100°C / min under an Ar (500s.c.c.m.) atmosphere; after holding for 5 minutes, introduce ethanol into the quartz tube with an Ar (250s.c.c.m.) airflow , reacted for 5 minutes; finally, under Ar atmosphere with 100 o Cool down to room temperature at a cooling rate of C / min to obtain three-dimensional graphene (Ni / 3D-G) grown on a nickel foam substrate, in which the loading capacity of graphene is 0.85mg / cm 2 ; Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O(Ni 2+ and Co 2+ molar ratio 1:2) and urea (the molar amount is Ni 2+ 12 times) dissolved in deionized water, stirred evenly, prepared with Ni 2+ A solution with a metered concentration of 0.04mol / L; Ni / 3D-G was used as a matrix, immersed in the above solution, and then transferred into a reaction kettle, sealed and kept in an oven at 120°C for 6 hours, and then deionized water and anhydrous Rinse with alcohol several times, and v...
Embodiment 2
[0050] Put nickel foam into a tube furnace, and raise the temperature to 1000°C at a rate of 100°C / min under an Ar (500s.c.c.m.) atmosphere; after holding for 5 minutes, introduce ethanol into the quartz tube with an Ar (250s.c.c.m.) airflow , reacted for 8 minutes; finally, cooled to room temperature at a rate of 100°C / min under Ar atmosphere to obtain Ni / 3D-G, in which the loading capacity of graphene was 1.3mg / cm 2 ; Ni(NO 3 ) 2 ·6H 2 O and CoCl 2 ·6H 2 O(Ni 2+ and Co 2+ molar ratio 1:2) and urea (the molar amount is Ni 2+ 15 times) dissolved in deionized water, stirred evenly, prepared with Ni 2+ A solution with a concentration of 0.01mol / L; Ni / 3D-G is used as a matrix, immersed in the above solution, and then transferred into a reaction kettle, sealed and kept in an oven at 130°C for 5 hours, and then deionized water and anhydrous Rinse several times with alcohol, and vacuum dry in an oven at 60°C for 12 hours to obtain Ni / 3D-G supported by nickel-cobalt hydroxide...
Embodiment 3
[0055] Put nickel foam into a tube furnace, and raise the temperature to 1000°C at a rate of 100°C / min under an Ar (500s.c.c.m.) atmosphere; after holding for 5 minutes, introduce ethanol into the quartz tube with an Ar (250s.c.c.m.) airflow , reacted for 3 minutes; finally, under Ar atmosphere with 100 o Cool down to room temperature at a cooling rate of C / min to obtain Ni / 3D-G, in which the loading capacity of graphene is 0.5mg / cm 2 ; the NiSO 4 ·6H 2 O and CoCl 2 ·6H 2 O(Ni 2+ and Co 2+ molar ratio 1:2) and urea (the molar amount is Ni 2+ 10 times) dissolved in deionized water, stirred evenly, prepared with Ni 2+ A solution with a concentration of 0.02mol / L; Ni / 3D-G is used as a matrix, immersed in the above solution, and then transferred into a reaction kettle, sealed and kept in an oven at 110°C for 8 hours, and then deionized water and anhydrous Rinse several times with alcohol, and vacuum dry in an oven at 60°C for 12 hours to obtain Ni / 3D-G supported by nickel-...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More