Three-Dimensional Unified Electrode Design Using a NiFeOOH Catalyst for Superior Performance and Durable Anion-Exchange Membrane Water Electrolyzers

ACS Catalysis ◽  
2021 ◽  
pp. 135-145
Author(s):  
Ji Eun Park ◽  
SungBin Park ◽  
Mi-Ju Kim ◽  
Heejong Shin ◽  
Sun Young Kang ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Three Dimensional ◽  
Anion Exchange Membrane ◽  
Superior Performance ◽  
Electrode Design ◽  
Exchange Membrane

Superior performance and stability of anion exchange membrane water electrolysis: pH-controlled copper cobalt oxide nanoparticles for the oxygen evolution reaction

2020 ◽  
Vol 8 (8) ◽  
pp. 4290-4299 ◽  
Author(s):  
Myeong Je Jang ◽  
Juchan Yang ◽  
Jongmin Lee ◽  
Yoo Sei Park ◽  
Jaehoon Jeong ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Anion Exchange ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Electrolysis ◽  
Anion Exchange Membrane ◽  
Superior Performance ◽  
Oxide Nanoparticles ◽  
Cobalt Oxide Nanoparticles ◽  
Exchange Membrane

Cu0.5Co2.5O4 nanoparticles are obtained by changes in the pH and applied as the anode in anion exchange membrane water electrolysis.

Poly(carbazole)-based anion-conducting materials with high performance and durability for energy conversion devices

2020 ◽  
Vol 13 (10) ◽  
pp. 3633-3645 ◽  
Author(s):  
Min Suc Cha ◽  
Ji Eun Park ◽  
Sungjun Kim ◽  
Seung-Hui Han ◽  
Sang-Hun Shin ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Energy Conversion ◽  
Anion Exchange ◽  
High Performance ◽  
Anion Exchange Membrane ◽  
Superior Performance ◽  
Aryl Ether ◽  
Conducting Materials ◽  
Exchange Membrane ◽  
Energy Conversion Devices

An aryl ether-free less-phenyl adsorbing poly-carbazole-based polymer shows superior performance and durability for anion exchange membrane fuel cells and electrolyzers.

scholarly journals A Three-Dimensional Agglomerate Model of an Anion Exchange Membrane Fuel Cell

2017 ◽  
Vol 15 (1) ◽  
Author(s):  
Bruno S. Machado ◽  
Nilanjan Chakraborty ◽  
Mohamed Mamlouk ◽  
Prodip K. Das
Keyword(s):  
Fuel Cell ◽  
Relative Humidity ◽  
Anion Exchange ◽  
Operating Temperature ◽  
Three Dimensional ◽  
Anion Exchange Membrane ◽  
Cell Performance ◽  
Electrochemical Kinetics ◽  
Overall Performance ◽  
Exchange Membrane

In this study, a three-dimensional (3D) agglomerate model of an anion exchange membrane (AEM) fuel cell is proposed in order to analyze the influence of the composition of the catalyst layers (CLs) on overall fuel cell performance. Here, a detailed comparison between the agglomerate and a macrohomogeneous model is provided, elucidating the effects of the CL composition on the overall performance and the individual losses, the effects of operating temperature and inlet relative humidity on the cell performance, and the CL utilization by the effectiveness factor. The results show that the macrohomogeneous model overestimates the cell performance compared to the agglomerate model due to the resistances associated with the species and ionic transports in the CLs. Consequently, the hydration is negatively affected, resulting in a higher Ohmic resistance. The activation overpotential is overpredicted by the macrohomogeneous model, as the agglomerate model relates the transportation resistances within the domain with the CL composition. Despite the higher utilization in the anode CL, the cathode CL utilization shows a significant drop near the membrane–CL interface due to a high current density and a low oxygen concentration. Additionally, the influences of operating temperature and relative humidity at the flow channel inlet have been analyzed. Similar to the macrohomogeneous model, the overall cell performance of the agglomerate model is enhanced with increasing operating temperature due to the better electrochemical kinetics. However, as the relative humidity at the inlet is reduced, the overall performance of the cell deteriorates due to the poor hydration of the membrane.

Denitrification of ground water by electrodialysis using a new anion exchange membrane

2000 ◽  
Vol 49 (4) ◽  
pp. 211-218
Author(s):  
F. Elhannouni ◽  
M. Belhadj ◽  
M. Taky ◽  
A. El Midaoui ◽  
L. Echihabi ◽  
...  
Keyword(s):  
Ground Water ◽  
Anion Exchange ◽  
Anion Exchange Membrane ◽  
Exchange Membrane

scholarly journals Durability of Anion Exchange Membrane Water Electolyzers

2021 ◽  
Author(s):  
Dongguo Li ◽  
Andrew R Motz ◽  
Chulsung Bae ◽  
Cy Fujimoto ◽  
Gaoqiang Yang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Anion Exchange ◽  
Low Cost ◽  
Anion Exchange Membrane ◽  
Production Technologies ◽  
Exchange Membrane

Interest in the low-cost production of clean hydrogen is growing. Anion exchange membrane water electrolyzers (AEMWEs) are considered one of the most promising sustainable hydrogen production technologies because of their...

scholarly journals Effect of Gas Diffusion Layer Thickness on the Performance of Anion Exchange Membrane Fuel Cells

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 718
Author(s):  
Van Men Truong ◽  
Ngoc Bich Duong ◽  
Hsiharng Yang
Keyword(s):  
Water Management ◽  
Anion Exchange ◽  
Critical Role ◽  
Gas Diffusion ◽  
Anion Exchange Membrane ◽  
Cell Performance ◽  
Water Flooding ◽  
Diffusion Layer Thickness ◽  
Diffusion Layers ◽  
Exchange Membrane

Gas diffusion layers (GDLs) play a critical role in anion exchange membrane fuel cell (AEMFC) water management. In this work, the effect of GDL thickness on the cell performance of the AEMFC was experimentally investigated. Three GDLs with different thicknesses of 120, 260, and 310 µm (denoted as GDL-120, GDL-260, and GDL-310, respectively) were prepared and tested in a single H2/O2 AEMFC. The experimental results showed that the GDL-260 employed in both anode and cathode electrodes exhibited the best cell performance. There was a small difference in cell performance for GDL-260 and GDL-310, while water flooding was observed in the case of using GDL-120 operated at current densities greater than 1100 mA cm−2. In addition, it was found that the GDL thickness had more sensitivity to the AEMFC performance as used in the anode electrode rather than in the cathode electrode, indicating that water removal at the anode was more challenging than water supply at the cathode. The strategy of water management in the anode should be different from that in the cathode. These findings can provide a further understanding of the role of GDLs in the water management of AEMFCs.

Sign in / Sign up

Export Citation Format

Share Document