Electrochemical behavior of nanocrystalline TiNi doped by MWCNTs and Pd

摘要: Abstract Mechanical alloying process was introduced to produce nanocrystalline TiNi alloy. X-ray diffraction (XRD) analysis showed that, after 8 h of milling, the starting mixture elements decomposed into an amorphous phase. XRD confirmed formation CsCl-type structure annealing at 750 °C for 0.5 h. Atomic force microscopy observations revealed that 70% grains had size below 100 nm. electrode alloy with and without palladium and/or multiwalled carbon nanotubes (MWCNTs) prepared by ball co-milling. Scanning electron co-milling 5 wt.% MWCNTs, particles decreased. The TiNi + 5 wt.% Pd + 5 wt.% MWCNTs nanocomposite highest discharge capacity (266 mAh/g 3rd cycle). Addition improved cycle stability.