Copper foil for manufacturing graphene and graphene manufacturing method
A technology of graphene and copper foil, which is applied in the field of copper foil for graphene manufacturing and graphene manufacturing, which can solve the problems of unsuitable mass production, difficulty in obtaining graphene sheets, and the number of layers of graphene sheets is not fixed, so as to achieve low cost Effect
Active Publication Date: 2014-02-19
JX NIPPON MINING & METALS CORP
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Problems solved by technology
[0003] As a method for producing graphene sheets, a method of exfoliating graphite with an adhesive tape is known, but there is a problem that the number of layers of the obtained graphene sheets is not fixed, it is difficult to obtain large-area graphene sheets, and it is not suitable for mass production.
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Examples
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Embodiment
[0094]
[0095] The copper ingots with the composition shown in Table 1 were produced. After hot rolling at 800-900°C, annealing and cold rolling were repeated once on a continuous annealing line at 300-700°C to obtain a rolling thickness of 1 to 2 mm. board. The rolled sheet was annealed and recrystallized on a continuous annealing line at 600-800°C, and finally cold-rolled to a thickness of 7-50μm with a rolling rate of 95-99.7%. Each example and comparison were obtained. Example of copper foil.
[0096] In addition, the tough pitch copper (TPC) used in each Example and Comparative Examples 4 and 5 was manufactured by reducing the oxygen concentration in the heated gas in the process of melting a raw material in a shaft furnace. At this time, as an indicator of the oxygen concentration in the heating gas, the carbon monoxide concentration is measured so that the carbon monoxide concentration is 2 to 7%.
[0097] In addition, for the tough pitch copper used in Comparative Exampl...
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Abstract
[Problem] To provide the following: copper foil for use in the manufacture of graphene whereby large pieces of graphene can be produced inexpensively; and a graphene manufacturing method using said copper foil. [Solution] Copper foil for use in the manufacture of graphene. Before being heated for one hour at 1,000 DEG C in an atmosphere that contains at least 20% hydrogen by volume and otherwise consists of argon, said copper foil has, per square millimeter, a total of no more than 15 oxides and sulfides with diameters of 0.5 [mu]m or greater as measured by surface elemental analysis using a scanning electron microscope.
Description
Technical field [0001] The present invention relates to a copper foil for manufacturing graphene and a method for manufacturing graphene. Background technique [0002] Graphite has a layered structure formed by stacking several layers of carbon six-membered rings arranged flat, and the substance having a single atomic layer to a few atomic layers is called graphene or graphene sheet. Graphene sheets have unique electrical, optical and mechanical properties, especially the high-speed movement of carriers. Therefore, graphene sheets are expected to be widely used in industries such as fuel cell membranes, transparent electrodes, conductive films for display elements, mercury-free fluorescent lamps, composite materials, and drug delivery systems (DDS) carriers. [0003] As a method of manufacturing graphene sheets, a method of peeling off graphite with an adhesive tape is known, but the number of layers of the graphene sheets obtained is not fixed, it is difficult to obtain large-are...
Claims
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IPC IPC(8): C01B31/02
CPCC01B31/0453C01B31/02B82Y30/00B82Y40/00B01J37/18B01J23/72B01J27/04B01J37/0009B01J37/0081C22C9/00C22C9/02C22F1/08C01B32/186Y10T428/12431C01B32/184
Inventor 千叶喜宽山路达也
Owner JX NIPPON MINING & METALS CORP