A5045620986- Fuel Cells and Related Materials
- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- Hybrid Renewable Energy Systems
- Membrane-based Ion Separation Techniques
- Advanced Battery Materials and Technologies
- Conducting polymers and applications
- Electrowetting and Microfluidic Technologies
- Advanced Battery Technologies Research
- Microfluidic and Capillary Electrophoresis Applications
- Membrane Separation Technologies
- Electrohydrodynamics and Fluid Dynamics
- CO2 Reduction Techniques and Catalysts
- Innovative Microfluidic and Catalytic Techniques Innovation
Hanyang University
2020-2024
Korea Research Institute of Chemical Technology
2020-2024
Anyang University
2021-2023
Pukyong National University
2017-2020
Daejeon University
2020
Government of the Republic of Korea
2020
An aryl ether-free less-phenyl adsorbing poly-carbazole-based polymer shows superior performance and durability for anion exchange membrane fuel cells electrolyzers.
A low-cost anion exchange membrane water electrolysis (AEMWE) stack with good performance and durability is demonstrated in this study. The configuration of an AEMWE single cell, composed etched copper–cobalt oxide anode (eCCO) by a simple chemical etching polycarbazole-based (QPC-TMA) was optimized through various single-cell studies. large-sized three-cell (total active area 190.9 cm2) eCCO QPC-TMA degradation rate 8.5 mV kh–1 as well energy conversion efficiency 75% for 2000 h 0.1 M KOH...
Development of high-performance and durable anion-exchange membrane water electrolysis enabled by chain-extender derived high-molecular-weight polycarbazole-based anion-conductive polymer.
Anion exchange membranes (AEMs) and ionomers are keys for electrochemical CO2 reduction (eCO2R), but their development multiple roles have not been intensively investigated. This study demonstrates HQPC-tmIM, a polycarbazole-based anion-conducting material, as commercially viable AEM reveals through multiphysics model simulation key descriptors governing eCO2R by exploiting the extraordinary membrane properties of HQPC-tmIM. The mechanical/chemical stability HQPC-tmIM showed superior...
The cathode side catalyst and binder were severely deteriorated compared to the membrane that of anode during constant current operation. This is due high local pH caused by water imbalance inside MEA.
The positive and negative charging difference in the contact charge electrophoresis of a water droplet suspended oil was investigated to find out origin this difference. Through numerous experiments numerical analysis, has been found be mainly originated from electrostatic sources. Two sources were present experimental setup, by excluding those two successfully diminished. findings well explain previous results also provide design guidelines for consistent movement control...
Compared to the remarkable advances in anion exchange ionomers (AEIs), catalyst layer (CL) of membrane fuel cell (AEMFC) has not been sufficiently engineered. Our molecular simulations reveal that AEIs widely used this field have weak interaction with carbon support, presenting possibility significant ionomer aggregation CL. To demonstrate issue ionomer–carbon interaction, we investigated CL morphology for various including polycarbazole-based (QPC-TMA), FAA-3, PiperION, Sustainion, and...
The effect of deformation on the droplet contact charge electrophoresis (CCEP) was investigated for consistent movement control. Through systematic experiments and numerical simulations, it has been found that overcharging by is up to about 130% sphere mainly driven concentration electric field near tip rather than an increase in surface area. Dimensional analysis revealed a CCEP motion with capillary number range 0.01–0.09. We also dimensionless follows universal curve proportional number,...
Anion-exchange membrane water electrolysis (AEMWE) represents a promising and cost-effective electrochemical energy conversion system for green hydrogen production owing to its utilization of earth-abundant metals various cell components (catalysts, porous transport layers, bipolar plates) the zero-gap design. However, lack high-performance anion-exchange membranes (AEMs) has hampered advancement AEMWE technology. Here, by using colon coupling click reactions, ether-free polyphenylene-based...
Water management of membrane electrode assemblies (MEAs) has a significant impact on both the power performance and durability anion exchange fuel cells (AEMFCs). In this work, hydrophobicity catalyst layers (CLs) was systematically tuned using hydroxyl-functionalized fluoroalkyl-functionalized carbon additives to improve water management. The inclusion fluorinated in anode CL effectively suppresses flooding, whereas additive cathode prevents drying. pairing hydrophobic hydrophilic increases...