Abstract: In order to increase the conductivity of the metal-hydride electrode of the MH/Ni batteries,the electrode was modified with a thin copper film using vacuum evaporate plating technology.The XRD,XPS and SEM were used to analyze the modified and unmodified electrodes.Results showed that the electrode could be modified with copper-without influence on the crystal structure of the alloy.The electrochemical performance test showed that the discharge capacity at(5 C) was increased by 190 mA·h and the discharge voltage was increased by 0.12 V after the surface modification of the electrode,the resistance of the batteries was also decreased by 32.8%.Meanwhile,the inner pressure of the batteries during charging was lowered and the charging efficiency of the batteries was improved.