Electrochemical and transport properties of La0.65Ce0.35Ni3.55Co0.75Mn0.4Al0.3 electrode were investigated in alkaline solution. The exchange current density, polarization resistance and the symmetry factor were determined from polarization curves obtained at low overpotentials. The symmetry factor was estimated to be 0.55 +/- 0.01 and is independent of the state of charge. The equilibrium potential of the electrode was found to depend upon the hydrogen content in the alloy. The constant current discharge technique was used to determine the hydrogen diffusion coefficient in the alloy. The estimated value of (D) over bar/a(2) at 0.1 C discharge rate was 1.39 x 10(-4) s(-1).