TY - JOUR
T1 - Effect of electrolyte concentration difference on hydrogen production during pem electrolysis
AU - Sun, Cheng Wei
AU - Hsiau, Shu San
N1 - Publisher Copyright:
© 2018, Korean Electrochemical Society. All rights reserved.
PY - 2018
Y1 - 2018
N2 - Proton exchange membrane (PEM) water electrolysis systems offer several advantages over traditional technologies including higher energy efficiency, higher production rates, and more compact design. In this study, all the experiments were performed with a self-designed PEM electrolyser operated at 1 atm and 25oC. Two types of electrolyte were used: (i) potassium hydroxide (KOH), and (ii) sulfuric acid (H2SO4). In the experiments, the voltage, current, and time were measured. The concentration of the electrolyte significantly affected the electrolyser performance. Overall the best case was with 15 wt% H2SO4 at the anode channel and 20 wt% at the cathode channel with. In addition, increasing the difference in concentration of the sulfuric acid had an effect on the diffusion. The diffusion flux became larger when the difference in concentration became larger, increasing electrolyser efficiency without the addition of extra energy.
AB - Proton exchange membrane (PEM) water electrolysis systems offer several advantages over traditional technologies including higher energy efficiency, higher production rates, and more compact design. In this study, all the experiments were performed with a self-designed PEM electrolyser operated at 1 atm and 25oC. Two types of electrolyte were used: (i) potassium hydroxide (KOH), and (ii) sulfuric acid (H2SO4). In the experiments, the voltage, current, and time were measured. The concentration of the electrolyte significantly affected the electrolyser performance. Overall the best case was with 15 wt% H2SO4 at the anode channel and 20 wt% at the cathode channel with. In addition, increasing the difference in concentration of the sulfuric acid had an effect on the diffusion. The diffusion flux became larger when the difference in concentration became larger, increasing electrolyser efficiency without the addition of extra energy.
KW - Difference in concentration
KW - Diffusion
KW - Electrolysis
KW - Electrolyte
KW - Proton exchange membrane electrolyser
UR - http://www.scopus.com/inward/record.url?scp=85056540665&partnerID=8YFLogxK
U2 - 10.5229/JECST.2018.9.2.99
DO - 10.5229/JECST.2018.9.2.99
M3 - 期刊論文
AN - SCOPUS:85056540665
SN - 2093-8551
VL - 9
SP - 99
EP - 108
JO - Journal of Electrochemical Science and Technology
JF - Journal of Electrochemical Science and Technology
IS - 2
ER -