Abstract
The heat balance during the electrolysis using B controlled Pd cathodes in1M LiOD heavy water solution has been measured using the flow calorimetersystem. We used two systems ; one is the high accurate system where theexperimental error was reduced to ±1.5%, the other is the high heat recoverysystem. The excess heat was observed for 6 experiments out of 14 for B controlled specimen. Most of the excess heat was very small except one examplewhere we observed a heat burst of 1.8W using Pd that contained 500ppm B.
