Research Project

Experimental exploration of critical mass transport at triple phase boundary in high-pressure water electrolysis


Kohei Ito
Kohei Ito


High-pressure water electrolysis has the potential to directly and efficiently produce high-pressure hydrogen gas from water at normal pressure. However, some amount of hydrogen gas produced at cathode permeates to anode because of the large pressure difference between them, and this permeation reduces the efficiency. This study challenges to decrease the permeation. Incorporable countermeasures from the system engineering point of view, namely convection, wettability and buoyancy effect will be here evaluated and optimized, leading to extreme enhancement of the departure of hydrogen gas from the triple phase boundary, and leading to the critical performance of high-pressure water electrolyzer.