Method for making nanoporous nickel composite material

A method for making nanoporous nickel composite material comprising:

• S1, providing a cathode plate and a copper-containing anode plate, electroplating a copper material layer a surface of the cathode plate;
• S2, laying a carbon nanotube layer on the copper material layer, and forming an overlapped structure of the copper material layer and the carbon nanotube layer on the surface of the cathode plate;
• S3, the cathode plate and the overlapped structure are used as a cathode, and a nickel-containing anode plate is used as an anode, plating a nickel material layer on the overlapped structure to form sandwich structure of the copper material layer, the carbon nanotube layer and the nickel material layer;
• S4:
• repeating steps S1 to S3 to obtain a carbon nanotube-reinforced copper-nickel alloy comprising a plurality of sandwich structures overlapped with each other;
• S5:
• rolling and annealing the carbon nanotube-reinforced copper-nickel alloy;
• and
• S6:
• etching the carbon nanotube-reinforced copper-nickel alloy to form the nanoporous nickel composite material.