Abstract:
In order to study the effect of multi-directional forging on microstructure and properties of the negative electrode alloy for new energy vehicle battery,the multi-directional forging tests of V
3TiNi
0.56Al
0.3 negative electrode alloy for new energy vehicle battery were carried out,and the microstructure,electrochemical stability and alkali corrosion resistance of multidirectional forged alloy and unforged alloy were tested and analyzed by metallographic microscope,scanning electron microscope,charge-discharge cycle test and alkali corrosion resistance test.The results show that After charge-discharge for 100 cycles the grains in the alloy with multi-directional forging are obviously refined,the distribution of microstructure is more uniform,and the second phase presents dense and continuous three-dimensional network.the discharge capacity decay rate of the multi-directional forged alloy is decreased by 46%,and the electrochemical stability of the alloy is greatly improved;the corrosion potential of the multidirectional wrought alloy is shifted by 109 mV,and the alkali corrosion resistance of the alloy is improved.The multi-directional forging V
3TiNi
0.56Al
0.3 alloy negative electrode alloy for new energy vehicle battery has a better market application prospect.