Search Results - "Lee, Eunjik"

Composition effects of spinel MnxCo3-xO4 nanoparticles on their electrocatalytic properties in oxygen reduction reaction in alkaline media by EUNJIK LEE, JANG, Ji-Hoon, KWON, Young-Uk

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Ultrasound-Driven enhancement of Pt/C catalyst stability in oxygen reduction reaction by Lee, Hyunjoon, Park, Eunbi, Lee, Eunjik, Lim, Iksung, Yang, Tae-Hyun, Park, Gu-Gon

“…[Display omitted] Polymer electrolyte membrane fuel cells (PEMFCs) have reached the commercialization phase, representing a promising approach to curbing…”
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Rational syntheses of core-shell Fex@Pt nanoparticles for the study of electrocatalytic oxygen reduction reaction by Jang, Ji-Hoon, Lee, Eunjik, Park, Jinwoo, Kim, Gunn, Hong, Suklyun, Kwon, Young-Uk

“…We report on the syntheses of core-shell Fe x @Pt ( x = 0.4–1.2) nanoparticles (NPs) with Pt-shell thickness systematically controlled while the overall…”
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Synergistic effect of perovskites and nitrogen-doped carbon hybrid materials for improving oxygen reduction reaction by Rohib, R., Rehman, Saeed Ur, Lee, Eunjik, Kim, Changki, Lee, Hyunjoon, Lee, Seung-Bok, Park, Gu-Gon

“…A fundamental understanding of the electrochemical behavior of hybrid perovskite and nitrogen-doped (N-doped) carbon is essential for the development of…”
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One-step sonochemical syntheses of Ni@Pt core–shell nanoparticles with controlled shape and shell thickness for fuel cell electrocatalyst by Lee, Eunjik, Jang, Ji-Hoon, Matin, Md. Abdul, Kwon, Young-Uk

“…•We synthesize core–shell type Ni@Pt nanoparticles by using ultrasound.•Two Ni@Pt NPs are prepared with Pt(acac)2 and two different Ni reagents.•The two Ni…”
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Enhancement of Catalytic Activity and Durability of Pt Nanoparticle through Strong Chemical Interaction with Electrically Conductive Support of Magnéli Phase Titanium Oxide by Dogan, Didem C, Choi, Jiye, Seo, Min Ho, Lee, Eunjik, Jung, Namgee, Yim, Sung-Dae, Yang, Tae-Hyun, Park, Gu-Gon

“…In this study, we address the catalytic performance of variously sized Pt nanoparticles (NPs) (from 1.7 to 2.9 nm) supported on magnéli phase titanium oxide…”
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Scalable synthesis of Robust, high-loading nitrogen-infused intermetallic FePt@Pt (core@shell) catalyst for proton exchange membrane fuel cells by Lee, Hyunjoon, Kim, Sungmin, Lee, Eunjik, Lim, Iksung, Yim, Sung-Dae, Kang, Yun Sik, Park, Gu-Gon

“…In this study, we propose PtFeIMN@Pt/C, featuring a Pt shell on a nitrogen-infused PtFe intermetallic core structure, and attempt large-scale synthesis of…”
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Highly durable core(Nb4N5)–shell(NbOx)-structured non-precious metal catalyst for oxygen reduction reaction in acidic media by Rohib, R., Lee, Eunjik, Kim, Changki, Lee, Hyunjoon, Park, Gu-Gon

“…In this study, we demonstrate an easy and eco-friendly synthesis method of Nb-based electrocatalysts using the combination of pulsed laser ablation in liquid…”
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Methanol Tolerant Pt–C Core–Shell Cathode Catalyst for Direct Methanol Fuel Cells by Lee, Dohyeon, Gok, Sujin, Kim, Youngkwang, Sung, Yung-Eun, Lee, Eunjik, Jang, Ji-Hoon, Hwang, Jee Youn, Kwon, Oh Joong, Lim, Taeho

“…Methanol crossover is one of the largest problems in direct methanol fuel cells (DMFCs). Methanol passing from the anode to the cathode through the membrane is…”
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Enhanced durability of Pt/C catalyst by coating carbon black with silica for oxygen reduction reaction by Islam, Jahowa, Kim, Sang-Kyung, Kim, Kyoung-Hee, Lee, Eunjik, Park, Gu-Gon

“…A platinum electrocatalyst was presented for oxygen reduction reaction that the durability to potential cycling was enhanced. It was synthesized by coating…”
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Durability enhancement of a Pt/C electrocatalyst using silica-coated carbon nanofiber as a corrosion-resistant support by Islam, Jahowa, Kim, Sang-Kyung, Lee, Eunjik, Park, Gu-Gon

“…Electrochemical oxidation of a carbon support is one of the major challenges to making proton exchange membrane fuel cells (PEMFCs) durable. The aim of this…”
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High-performance long-term driving proton exchange membrane fuel cell implemented with chemically ordered Pt-based alloy catalyst at ultra-low Pt loading by Kim, Youngkwang, Bae, Hyo Eun, Lee, Dohyeon, Kim, Jeongwoo, Lee, Eunjik, Oh, Songi, Jang, Ji-Hoon, Cho, Yong-Hun, Karuppannan, Mohanraju, Sung, Yung-Eun, Lim, Taeho, Kwon, Oh Joong

“…In proton exchange membrane fuel cells (PEMFCs), it is very important to develop a cathode catalyst with high oxygen reduction reaction activity and high…”
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Multi-component electrocatalyst for low-temperature fuel cells synthesized via sonochemical reactions by Lee, Eunjik, Kwon, Young-Uk

“…•This review presents recent advances in sonochemical preparation for electrocatalyst.•Physical effect of ultrasound in nanomaterials preparation is…”
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PtCo-ZIF-derived hybrid electrocatalysts comprising an ordered PtCo alloy and a single-atoms-decorated carbon shell for the oxygen reduction reaction by Lee, Hyunjoon, Oh, Kyung-Ryul, Yun, Gwang-Nam, Lee, Eunjik, Kim, Changki, Kang, Yun Sik, Kwon, Yongmin, Hidajat, Marcel Jonathan, Sung, Yung-Eun, Hwang, Young Kyu, Park, Gu-Gon

“…Recent research on hybrid catalysts showed that Pt-based alloy particles surrounded by a single-atoms-decorated carbon shell exhibit promising oxygen reduction…”
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Confinement-enabled infusion-alloying of iron into platinum nanoparticle for core-shell PtFe@Pt intermetallic electrocatalyst by Lee, Eunjik, Lee, Dong-Je, Kim, Yujin, Kim, Changki, Kwon, Yongmin, Lee, Hyunjoon, Lim, Iksung, An, Byoeng-Seon, Yang, Tae-Hyun, Park, Gu-Gon

“…Platinum-based intermetallics are efficient electrocatalysts for the oxygen reduction reaction (ORR) in polymer electrolyte fuel cells (PEFCs) because of their…”
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TiC supported Pt-based nanoparticles: Facile sonochemical synthesis and electrocatalytic properties for methanol oxidation reaction by Park, Hyun-Uk, Lee, Eunjik, Kwon, Young-Uk

“…In this study, we synthesized Pt nanoparticles (NPs) with small amounts of Mn (≤11.4 at%) included, hence Pt(Mn) NPs, on titanium carbide (TiC) support…”
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Facile sonochemical synthesis of amorphous NiFe-(oxy)hydroxide nanoparticles as superior electrocatalysts for oxygen evolution reaction by Lee, Eunjik, Park, Ah-Hyeon, Park, Hyun-Uk, Kwon, Young-Uk

“…•Small and amorphous NiFe(H) nanoparticles are synthesized by a sonochemical method.•OER activity of NiFe(H) show the volcano-type trend following the Fe…”
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Effects of particle proximity and composition of Pt–M (M = Mn, Fe, Co) nanoparticles on electrocatalysis in methanol oxidation reaction by Lee, Eunjik, Kim, Seongbok, Jang, Ji-Hoon, Park, Hyun-Uk, Matin, Md. Abdul, Kim, Yong-Tae, Kwon, Young-Uk

“…We have synthesized Pt–M (M = Mn, Fe, and Co) nanoparticles (NPs) on carbon nanotube (CNT) supports (Pt–M/CNT) by one-pot sonochemical reactions and…”
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Effects of Gas-Diffusion Layers and Water Management on the Carbon Corrosion of a Catalyst Layer in Proton-Exchange Membrane Fuel Cells by Lee, Sumin, Kim, Changki, Lee, Eunjik, Choi, Yoon-Young, Jung, Sung Yong, Sohn, Young-Jun, Oh, Hwanyeong

“…Carbon corrosion in a catalyst layer (CL) deteriorates the performance and durability of proton-exchange membrane fuel cells (PEMFCs), which are closely…”
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Sonochemical gram-scale synthesis of core–shell PdCo@Pt nanoparticle and investigation of post heat-treatment effect for various gas atmospheres by Lim, Iksung, Lee, Eunjik, Park, Hyun-Uk, Jang, Jeongyun, Jung, Namgee, Yang, Tae-Hyun, Yim, Sung-Dae, Park, Gu-Gon

“…•We use ultrasound to synthesize of PdCo@Pt nanoparticles up to 10 g per batch.•Effect of post heat-treatment of PdCo@Pt was investigated under varied gas…”
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