Effect of electroless plating nickel treatment on
electrode properties of Zr-based AB2 type alloy
electrode properties of Zr-based AB2 type alloy
(1. School of Materials and Metallurgy, Northeastern University,
Shenyang 110004, P.R.China;
2. Institute of Metal Research, Chinese Academy of Sciences,
Shenyang 110016, P.R.China)
Shenyang 110004, P.R.China;
2. Institute of Metal Research, Chinese Academy of Sciences,
Shenyang 110016, P.R.China)
Abstract: An electroless plating nickel treatment was processed to improve the active behaviors and discharge capacities of Zr-based AB2 alloys. The effects of the nickel coating on the surface appearance, the structure of the alloy powders and the electrode characteristics were investigated. It is found that the Nirich layer formed through electroless plating nickel treatment plays an important role on the initial activation property and the discharge capacity of Zr-based alloy. The optimal content of electroless plating nickel is about 15%, and the discharge capacity of the electrode can be increased to 400mA·h·g-1 after 6 cycles. Although coated nickel is beneficial for quick activation and discharge capacity, excessive electroless plating nickel can result in a decreased discharge capacity.
Key words: Zr-based AB2 alloy; electroless plating nickel; activation behavior; discharge capacity