| dc.description.abstract | During the process of releasing energy, hydrogen produce no green-house-effect gas and has a potential as a energy carrier in the future. Among the methods of hydrogen production, water electrolysis has many advantages, such as high efficiency, high purity in producing hydrogen, easy in use, etc., and thus become one of popular methods.
In this study, we use platinum electrodes and modified experimental set-up to study the effects of working parameters, such as concentration of electrolyte, current, voltage, and the time on the efficiency of electrolysis. Based on the data recorded by AUTOLAB power supply and the energy consumed through electrolysis, we can find out the optimum parameters for water electrolysis to improve the hydrogen production efficiency of water electrolysis.
The results of experiment show that temperature greatly affects the electrolysis efficiency. Each increase of 25℃ gives electrolysis efficiency raising about 5% to 6% from 27℃ to 75℃. Before experiment, I predict that electrocatalytic of Pt and ion transfer of electrolyte would differ from temperature. It’s also found that the relation between temperatures with better concentrations for better electrolysis efficiency is so week and in most conditions the better concentration of KOH is 30%. | en_US |