Effect of Content of Mg on the Electrochemical Performance of La1-xMgxNi2.8Co0.7 (x=0.1, 0.3, 0.5) Hydrogen Storage Alloy
La1-xMgxNi2.8Co0.7 (x=0.1, 0.3, 0.5) hydrogen storage alloy was synthesized by solid diffusion method. The microstructure of the alloy was analyzed by XRD when the content of Mg was changed. When x equaled to 0.3, there was relative much La2Ni7 phase in the alloy and the alloy exhibited better integrated electrochemical performance. Its maximum discharge capacity reached 355.4mAh/g and capacity retention after 50 cycles（S50）was 77.80%. The results showed the existence of La2Ni7 phase would be conductive to the integrated electrochemical performance of the alloy.
Zhenyu Du and X.B Sun
J. Wang et al., "Effect of Content of Mg on the Electrochemical Performance of La1-xMgxNi2.8Co0.7 (x=0.1, 0.3, 0.5) Hydrogen Storage Alloy", Advanced Materials Research, Vols. 113-116, pp. 2129-2133, 2010