scholarly journals Highly cost-effective platinum-free anion exchange membrane electrolysis for large scale energy storage and hydrogen production

RSC Advances ◽  
2020 ◽  
Vol 10 (61) ◽  
pp. 37429-37438
Author(s):  
Immanuel Vincent ◽  
Eun-Chong Lee ◽  
Hyung-Man Kim
Keyword(s):  
Anion Exchange ◽  
Large Scale ◽  
Proton Exchange Membrane ◽  
Cost Effective ◽  
Platinum Group Metal ◽  
Anion Exchange Membrane ◽  
Proton Exchange ◽  
Pem Electrolysis ◽  
Alkaline Electrolysis ◽  
Exchange Membrane

Anion exchange membrane (AEM) electrolysis eradicates platinum group metal electrocatalysts and diaphragms and is used in conventional proton exchange membrane (PEM) electrolysis and alkaline electrolysis.

scholarly journals P2H Modeling and Operation in the Microgrid Under Coupled Electricity–Hydrogen Markets

2021 ◽  
Vol 9 ◽  
Author(s):  
Hongxin Liu ◽  
Yueyao Wang ◽  
Feifei Xu ◽  
Mengkai Wu ◽  
Kai Jiang ◽  
...  
Keyword(s):  
Electricity Market ◽  
Large Scale ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Market Model ◽  
Electrolysis Cell ◽  
Unified Modeling ◽  
Upper Level ◽  
Alkaline Electrolysis ◽  
Exchange Membrane

The uncertainty and volatility of wind power have led to large-scale wind curtailment during grid connections. The adoption of power-to-hydrogen (P2H) system in a microgrid (MG) can mitigate the renewable curtailment by hydrogen conversion and storage. This paper conducts unified modeling for different types of P2H systems and considers the multi-energy trading in a hydrogen-coupled power market. The proposed bi-level equilibrium model is beneficial to minimize the energy cost of microgrids. Firstly, a microgrid operation model applied to different P2H systems including an alkaline electrolysis cell (AEC), a proton exchange membrane electrolysis cell (PEMEC), or a solid oxide electrolysis cell (SOEC) is proposed at the upper level. Secondly, an electricity market–clearing model and a hydrogen market model are constructed at the lower level. Then, the diagonalization algorithm is adopted to solve the multi-market equilibrium problem. Finally, case studies based on an IEEE 14-bus system are conducted to validate the proposed model, and the results show that the microgrid with a P2H system could gain more profits and help increase the renewable penetration.

scholarly journals Alkaline membrane fuel cells: anion exchange membranes and fuels

2021 ◽  
Author(s):  
Maša Hren ◽  
Mojca Božič ◽  
Darinka Fakin ◽  
Karin Stana Kleinschek ◽  
Selestina Gorgieva
Keyword(s):  
Fuel Cells ◽  
Anion Exchange ◽  
Energy Production ◽  
Proton Exchange Membrane ◽  
Anion Exchange Membrane ◽  
Proton Exchange ◽  
Anion Exchange Membranes ◽  
Electrochemical Devices ◽  
Alkaline Membrane ◽  
Exchange Membrane

Alkaline anion exchange membrane fuel cells (AAEMFC) are attracting ever-increasing attention, as they are promising electrochemical devices for energy production, presenting a viable opponent to proton exchange membrane fuel cells (PEMFCs).

Fe-N-C/Fe nanoparticle composite catalysts for oxygen reduction reaction in proton exchange membrane fuel cells

2022 ◽  
Author(s):  
Shiyang Liu ◽  
Quentin Meyer ◽  
Yibing Li ◽  
Tingwen Zhao ◽  
Zhen Su ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Proton Exchange Membrane ◽  
Cost Effective ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Proton Exchange ◽  
Composite Catalysts ◽  
Exchange Membrane

Replacing Pt-based catalysts with cost-effective, highly efficient, and durable platinum group metal-free catalysts for oxygen reduction reaction (ORR) is crucial for commercializing hydrogen fuel cells. Herein, we present a highly...

Comparative Investigation of Electrocatalytic Oxidation By Proton-Exchange-Membrane and Anion-Exchange-Membrane Electrolyses

2020 ◽  
Vol MA2020-02 (43) ◽  
pp. 2773-2773
Author(s):  
Yuto Ido ◽  
Yutaro Shimizu ◽  
Juri Minoshima ◽  
Atsushi Fukazawa ◽  
Kenta Tanaka ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Electrocatalytic Oxidation ◽  
Proton Exchange Membrane ◽  
Comparative Investigation ◽  
Anion Exchange Membrane ◽  
Proton Exchange ◽  
Exchange Membrane

scholarly journals Green hydrogen from anion exchange membrane water electrolysis: a review of recent developments in critical materials and operating conditions

2020 ◽  
Vol 4 (5) ◽  
pp. 2114-2133 ◽  
Author(s):  
Hamish Andrew Miller ◽  
Karel Bouzek ◽  
Jaromir Hnat ◽  
Stefan Loos ◽  
Christian Immanuel Bernäcker ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Proton Exchange Membrane ◽  
Pure Water ◽  
Water Electrolysis ◽  
Anion Exchange Membrane ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Recent Developments ◽  
Water Feed ◽  
Exchange Membrane

Hydrogen production using water electrolysers equipped with an anion exchange membrane, a pure water feed and cheap components (catalysts and bipolar plates) can challenge proton exchange membrane electrolysis systems as the state of the art.

Fabrication of spinel ferrite based alkaline anion exchange membrane water electrolysers for hydrogen production

RSC Advances ◽  
2015 ◽  
Vol 5 (43) ◽  
pp. 34100-34108 ◽  
Author(s):  
T. Pandiarajan ◽  
L. John Berchmans ◽  
S. Ravichandran
Keyword(s):  
Hydrogen Production ◽  
Metal Oxides ◽  
Anion Exchange ◽  
Proton Exchange Membrane ◽  
Spinel Ferrite ◽  
Water Electrolysis ◽  
Anion Exchange Membrane ◽  
Proton Exchange ◽  
Exchange Membrane

Alkaline anion exchange membrane water electrolysis (AEMWE) is considered to be an alternative to proton exchange membrane water electrolysis (PEMWE), owing to the use of non-noble meta/metal oxides in AEMWE.

scholarly journals Blended Anion Exchange Membranes for Vanadium Redox Flow Batteries

Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2827
Author(s):  
Tae Yang Son ◽  
Kwang Seop Im ◽  
Ha Neul Jung ◽  
Sang Yong Nam
Keyword(s):  
Anion Exchange ◽  
Polyvinylidene Fluoride ◽  
Proton Exchange Membrane ◽  
Anion Exchange Membrane ◽  
Proton Exchange ◽  
Anion Exchange Membranes ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Exchange Membrane ◽  
Vanadium Redox

In this study, blended anion exchange membranes were prepared using polyphenylene oxide containing quaternary ammonium groups and polyvinylidene fluoride. A polyvinylidene fluoride with high hydrophobicity was blended in to lower the vanadium ion permeability, which increased when the hydrophilicity increased. At the same time, the dimensional stability also improved due to the excellent physical properties of polyvinylidene fluoride. Subsequently, permeation of the vanadium ions was prevented due to the positive charge of the anion exchange membrane, and thus the permeability was relatively lower than that of a commercial proton exchange membrane. Due to the above properties, the self-discharge of the blended anion exchange membrane (30.1 h for QA–PPO/PVDF(2/8)) was also lower than that of the commercial proton exchange membrane (27.9 h for Nafion), and it was confirmed that it was an applicable candidate for vanadium redox flow batteries.

scholarly journals Effect of Stratification of Cathode Catalyst Layers on Durability of Proton Exchange Membrane Fuel Cells

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2975
Author(s):  
Zikhona Nondudule ◽  
Jessica Chamier ◽  
Mahabubur Chowdhury
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Electrochemical Impedance ◽  
Catalyst Layer ◽  
Cost Effective ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Potential Cycling ◽  
Catalyst Layers ◽  
Exchange Membrane

To decrease the cost of fuel cell manufacturing, the amount of platinum (Pt) in the catalyst layer needs to be reduced. In this study, ionomer gradient membrane electrode assemblies (MEAs) were designed to reduce Pt loading without sacrificing performance and lifetime. A two-layer stratification of the cathode was achieved with varying ratios of 28 wt. % ionomer in the inner layer, on the membrane, and 24 wt. % on the outer layer, coated onto the inner layer. To study the MEA performance, the electrochemical surface area (ECSA), polarization curves, and electrochemical impedance spectroscopy (EIS) responses were evaluated under 20, 60, and 100% relative humidity (RH). The stratified MEA Pt loading was reduced by 12% while maintaining commercial equivalent performance. The optimal two-layer design was achieved when the Pt loading ratio between the layers was 1:6 (inner:outer layer). This MEA showed the highest ECSA and performance at 0.65 V with reduced mass transport losses. The integrity of stratified MEAs with lower Pt loading was evaluated with potential cycling and proved more durable than the monolayer MEA equivalent. The higher ionomer loading adjacent to the membrane and the bi-layer interface of the stratified catalyst layer (CL) increased moisture in the cathode CL, decreasing the degradation rate. Using ionomer stratification to decrease the Pt loading in an MEA yielded a better performance compared to the monolayer MEA design. This study, therefore, contributes to the development of more durable, cost-effective MEAs for low-temperature proton exchange membrane fuel cells.

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