The planar structural Fe-P alloy deposits were prepared by electroplating. The structure and electrochemical performance of the electroplated Fe-P alloys have been investigated in detail. XRD results showed that Fe-P alloy deposit exhibits an amorphous state. Electrochemical tests showed that the Fe-P alloy composite electrodes can deliver a discharge capacity of 542 mAh.g(-1) In the first cycle and the coulombic efficiency of 60%. At the 50(th) cycle the discharge capacity was 366 mAh.g(-1). The Fe-P electrodes with nanorods structure obtained during cycling was beneficial in reducing the irreversible capacity of Fe-l? alloy electrode at initial charge-discharge, and in relaxing the volume expansion during cycling, which improved the cycleability of Fe-P alloy electrode. They are also beneficial to diffusion of Li inset/out of materials, and improve coulombic efficiency in charge-discharge cycle
