A5017095584- Advanced battery technologies research
- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Membrane-based Ion Separation Techniques
- Advanced Battery Materials and Technologies
- Conducting polymers and applications
- Hybrid Renewable Energy Systems
- CO2 Reduction Techniques and Catalysts
Korea Research Institute of Chemical Technology
2016-2024
Government of the Republic of Korea
2017-2020
Daejeon University
2017-2020
Hanyang University
2017-2019
Anyang University
2017-2019
Chungnam National University
2016
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...
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...
A series of oligomeric chain extender-derived AEMs (QPP- b -PSK- w -TMA) are reported for AEMFC and AEMWE. Especially, the QPP- -PSK-3.5-TMA-based showed highest specific power among state-of-the-art AEMFCs with noble metal catalysts.
sPBPSP-<italic>z</italic> ionomers exhibit excellent cell performance in VRFBs as well remarkable chemical stability.
It is known that uniaxially drawn perfluoronated sulfonic-acid ionomers (PFSAs) show diffusion anisotropy because of the aligned water channels along deformation direction. We apply stretched membranes to vanadium redox flow batteries (VRFBs) suppress permeation active species, ions through transverse directions. The render much lower permeability, resulting in higher Coulombic efficiency (>98%) and longer self-discharge time (>250 h). Similar ions, proton conduction also decreases as...
PErC(5)QPS-QPPO exhibited 20.7% higher MPD than commercial AEM (AMV).
Four sulfonated poly(p-phenylene)-based ionomer materials with different hydrophobic block structures are synthesized in order to investigate the effect of structure on durability membrane vanadium redox flow batteries (VRFBs). The structural differences blocks scarcely affect physical, electrochemical, and morphological properties copolymer-type ionomers. On contrary, according an ex situ soaking test VRFBs cell test, greatly chemical stability membranes. Among four ionomers, sPP-b-PSK...
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...
Recently, the most commonly used membrane in vanadium redox flow battery(VRFB) are ion exchange membrane, especially, cation membrane. The state-of-the-art perfluorosulfonic acid polymers, Nation ® , widely because of their outstanding conductivity and chemical stability. However, high cost crossover have limited commercialization VRFB technology. Dislike anion has been investigated it could fundamentally decrease permeability ions. Nevertheless, level difficulty low mechanical property...