Effect of Preparation Method on Properties of TiNi Hydrogen Storage Electrode Alloy

TiNi hydrogen storage electrode alloy was prepared respectively by four methods to improve its properties,and the cycling stability and electrochemical corrosion resistance of the alloys obtained were tested and analyzed.The results show that compared with the conventional induction melting,the vacuum induction melting,mechanical vibration assisted vacuum induction melting and ultrasonic vibration assisted vacuum induction melting can reduce the discharge capacity decay rate of the TiNi alloy separately by 34%,48% and 65%,and make the corrosion potential positively shift by 92,141 and 173 mV,respectively.The vacuum induction melting,mechanical vibration assisted vacuum induction melting and ultrasonic vibration assisted vacuum induction melting can help to improve the cycling stability and electrochemical corrosion resistance of the TiNi hydrogen storage electrode alloy,of which ultrasonic vibration assisted vacuum induction melting is the best and determined as the optimum preparation method for TiNi hydrogen storage electrode alloy.