Argon Microwave Plasma Processed Electrodeposited FeCo Catalysts on Ti Paper as an Anode Porous Transport Layer (PTL) for Cathode-Dry Anion Exchange Membrane Water Electrolysis (AEMWE)
Hsing-Chen Wu, Shuo-En Yu, I-Chun Cheng, Jian-Zhang Chen
TL;DR
This paper introduces a new method using microwave plasma treatment to improve the performance of a catalyst in water electrolysis.
Contribution
The novel use of argon microwave plasma treatment to enhance the electrochemical activity of FeCo catalysts on titanium paper.
Findings
ArMP treatment reduces overpotential and improves Tafel slope for the oxygen evolution reaction.
The ArMP-treated catalyst shows higher double-layer capacitance and lower charge transfer resistance.
The cathode-dry AEMWE system with ArMP treatment achieves lower cell voltage at high current densities.
Abstract
ED-FeCo/TP is synthesized by the electrochemical deposition of FeCo on titanium fiber paper (TP) as the catalyst for the oxygen evolution reaction (OER) in cathode-dry operation anion exchange membrane water electrolysis (AEMWE). With 15 s Ar microwave plasma (ArMP) treatment, the catalytic performance is enhanced. The ED-FeCo/TP treated with ArMP (ED-FeCo/TP-ArMP15) exhibits an overpotential of 459 mV@100 mA/cm2 and an improved Tafel slope of 211.1 mV/dec, a higher double-layer capacitance (2.80 mF/cm2), a lower charge transfer resistance (1.10 Ω), and enhanced electrochemical activity. ArMP treatment provides a reduction effect, leading to the formation of abundant metallic Fe0 and Co0 in ED-FeCo/TP-ArMP15. The cathode-dry AEMWE system with ArMP treatment (Ru/CP(−)//ED-FeCo/TP-ArMP15(+)) exhibits better performance at higher current densities than the system without ArMP treatment…
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Taxonomy
TopicsMembrane-based Ion Separation Techniques · Electrocatalysts for Energy Conversion · Ammonia Synthesis and Nitrogen Reduction