A5083735513- Advanced battery technologies research
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Electrocatalysts for Energy Conversion
- Thin-Film Transistor Technologies
- ZnO doping and properties
- Advanced Battery Materials and Technologies
- Nanowire Synthesis and Applications
- Semiconductor materials and devices
- Advancements in Battery Materials
- Oxidative Organic Chemistry Reactions
- Electrochemical Analysis and Applications
- Transition Metal Oxide Nanomaterials
- Electrochemical sensors and biosensors
- Vanadium and Halogenation Chemistry
- Membrane Separation and Gas Transport
- Perovskite Materials and Applications
- Membrane Separation Technologies
- Microbial Fuel Cells and Bioremediation
- Hybrid Renewable Energy Systems
- Fuel Cells and Related Materials
Seoul National University of Science and Technology
2020-2024
Korea University
2022
Chung-Ang University
2019-2021
An all-iron aqueous redox flow battery using iron (Fe) 2,2-bis(hydroxymethyl)-2,2′,2′-nitrilotriethanol (BIS-TRIS) complex (Fe(BIS-TRIS)) and Ferrocyanide (Fe[CN]6) as couple is newly suggested. The potential of Fe(BIS-TRIS) −1.11 V (vs Ag/AgCl) this makes appropriate active material for anolyte, while Fe(CN)6 proper catholyte due to its excellent reactivity, potential, cheap cost. According quantitative evaluations, does not produce any side reactions more stable than Fe triethanolamine...
Abstract Ion conducting membranes play a crucial role in redox flow batteries, separating anolyte and catholyte while allowing proton transport to complete the circuit. However, most are trapped trade‐off relation show either low conductivity or high vanadium crossover. This study investigates use of dense sulfonated para ‐polybenzimidazole for batteries (VRFBs), analyzes effects membrane preparation process, thickness operating temperature on VRFB performance. The results demonstrate...
Modified (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO)-mediated oxidation (MTMO) is introduced to fabricate low-defected carboxylic acid functional group–rich carbon nanotube (TEMPO-CNT) through facile and eco-friendly chemical preparation. Due the MTMO, O=C-O portion (18.2%), representing amount of active site vanadium ion redox reaction (VIRR), reaches nearly same with conventionally acid-treated CNT (AT-CNT, 18.9%). However, intensity ratio D G band TEMPO-CNT measured lower value (1.14)...
This study focuses on enhancing the stability of ARFBs using iodine as active material for catholyte and (2-hydroxypropyl)-β-cyclodextrin additive, to increase solubility I 2 activate reaction form 3 − ion.
Abstract A novel polybenzimidazole (PBI)‐based trilayer membrane assembly is developed for application in vanadium redox flow battery (VRFB). The comprises a 1 µm thin cross‐linked poly[2,2′‐( p ‐oxydiphenylene)−5,5′‐bibenzimidazole] (OPBI) sandwiched between two 20 thick porous OPBI membranes (p‐OPBI) without further lamination steps. demonstrates exceptional properties, such as high conductivity and low area‐specific resistance (ASR) of 51 mS cm −1 81 mΩ 2 , respectively. Contact with...
In this study, to improve the performance of vanadium redox flow battery (VRFB), Fe-triethanolamine (Fe(TEA)) is used as a precursor carbon etching form two-scale mesoporous structure on graphite felt (GF) electrode. Specifically, large-scale mesopores (~0.5 μm) and small-scale (~10 nm) are produced fibers GF electrode (Fe(TEA)-TGF). With mesopores, specific surface area number active site significantly increased, overvoltage sacrificed reduced. When performances VRFBs using treated...
In this study, long-term stability of all-iron aqueous redox flow batteries (all-iron ARFBs) using iron-3-[bis(2-hydroxyethyl)amino]-2-hydroxypropanesulfonic acid complex (Fe[DIPSO]) and ferrocyanide as couple is evaluated. system, there are two problems to address. First, issue catholyte including that worsened under alkali electrolyte second, unbalanced pH anolyte occurring by the crossover water molecules during cycling ARFB, these degrade performance ARFB steadily. To enhance catholyte,...
The present work investigated the electrical characteristics of Corbino structure p-type tin monoxide (SnO) thin-film transistors (TFTs) and demonstrated a high-performance complementary logic inverter composed SnO n-type indium-gallium-zinc oxide (IGZO) TFTs. Experimental data showed that TFT exhibited an almost infinite output resistance beyond pinch-off in outer drain condition. observed phenomenon was mainly attributed to scaling down effective channel width proportion length. By using...
Fe–Mn flow batteries using Fe(BIS–TRIS) and MnO 4 -based electrolytes improve voltage energy efficiencies, proving as an effective alternative to ferrocyanide.
Ultrathin and smooth polyamide (PA) reverse osmosis (RO) membranes have attracted significant interest due to their potential advantages of high permeance low fouling propensity. Although a layered interfacial polymerization (LIP) technique aided by the insertion polyelectrolyte interlayer has proven effective in fabricating ultrathin uniform membranes, RO performance pH stability fabricated LIP membrane remain inadequate. In this study, poly(piperazineamide) (PIPA) layer prepared via (IP)...
This present work investigated the effects of proton-beam irradiation on SnO-based p-type oxide thinfilm transistors (TFTs) for first time. The experiments were performed using a 5-MeV proton beam with doses ranging from 1012 to 1014 p·cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-2</sup> . experimental results showed that transfer curves SnO TFT rarely changed following at every condition, indicating could be potentially useful in...