Enhanced electrochemical properties of ball-milled Ti-30V-15Mn-15Cr+20 wt% La(NiMnCoAl)5 alloy electrodes

The electrochemical characteristics of the ball-milled Ti-30V-15Mn-15Cr+20 wt% La(NiMnCoAl)5 alloy electrodes were investigated. After 30 min ball-milling, the composite sample exhibits a higher discharge capacity and a longer cycle life. It could be attributed to the uniform disperse of the La(NiMnCoAl)5 alloy particles on the surface of the composite sample, which not only acts as both an electro-catalyst and a micro-current collector, but also prevents the V dissolution into the alkaline electrolyte during the charge-discharge cycles