A steady-state method and ac impedance spectroscopy were used to investigate the hydrogen evolution reaction (HER) on porous lanthanum-phosphate-bonded nickel (LPBN) electrodes in 9M NaOH and KOH solutions at temperatures ranging from 20 to 70-degrees-C. The Tafel slopes, exchange current densities, and overpotentials at a current density of 250 mA/cm2 were obtained from steady-state measurements. The ac,impedance data were analyzed using the porous-electrode model, and the kinetic parameters of the HER and double-layer capacitances were determined. The pore length was deduced to be 64 to 73 mum compared to 1 mum for the diameter. The effect of temperature and the nature of the electrolyte on the intrinsic electrocatalytic activity of the LPBN electrodes are discussed.