Single crystal copper foil and preparation method thereof
A copper foil and single crystal technology, applied in the field of single crystal copper foil and its preparation, can solve the problems of high cost and low copper foil efficiency, and achieve the effects of improving performance, low cost and low cost
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[0022] One aspect of the present invention provides a method for preparing single crystal copper foil, including: placing the copper foil in an oxidizing gas atmosphere for pre-oxidation treatment to completely oxidize the surface of the copper foil; The reduction treatment is performed in a mild gas atmosphere to obtain a single crystal copper foil.
[0023] According to the present invention, copper foil is used as an effective substrate and catalyst for growing graphene, and high-quality graphene samples can be prepared by a chemical vapor deposition (CVD) method. The orientation of copper foil, grain boundaries and other properties will affect the performance of graphene to some extent. The preparation of single crystal copper foil can significantly reduce the influence of grain boundaries on graphene, and the graphene grown on single crystal copper foil can achieve seamless splicing. The existing copper foil single crystallization methods are long-term annealing or temperat...
Example Embodiment
[0034] Example 1
[0035] Put common commercially available copper foil (purchased from Kunshan Luzhifa Electronic Technology Co., Ltd.) with the carrier into the tube furnace, and pass air into it for pre-oxidation treatment at 300°C for 60 minutes to completely oxidize the surface of the copper foil , The organic matter attached to the copper foil surface is oxidized and decomposed and desorbed. Then hydrogen gas was introduced into the tube furnace, and the temperature was raised to 1000° C. After 30 minutes of reduction treatment, the copper oxide on the surface of the copper foil was completely reduced to obtain a single crystal copper foil with a single crystal size of 10 cm.
Example Embodiment
[0036] Example 2
[0037] Put ordinary commercially available copper foil (purchased from Kunshan Luzhifa Electronic Technology Co., Ltd.) with the carrier into the tube furnace, and pass air into it for pre-oxidation treatment at 400℃ for 30 minutes to completely oxidize the surface of the copper foil , The organic matter attached to the copper foil surface is oxidized and decomposed and desorbed. Then hydrogen gas was introduced into the tube furnace, and the temperature was raised to 800°C, and the copper oxide on the surface of the copper foil was completely reduced after the reduction treatment for 5 minutes to obtain a single crystal copper foil with a single crystal size of 11 cm.
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