Kang Hyun Park

Pusan National University

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Seung Uk Son

Sungkyunkwan University

Sungkyun Park

Pusan National University

Young Keun Chung

Seoul National University

Ji Chan Park

Korea Institute of Energy Research

Nallal Muthuchamy

Pusan National University

Hyunje Woo

Pusan National University

Mohammad Yusuf

University of Regina

Saravanan Nagappan

Pukyong National University

Hyunjoon Song

Korea Advanced Institute of Science and Technology

Young Keun Chung

Seoul National University

Cooperative Institutions

Pusan National University

191

Seoul National University

110

Government of the Republic of Korea

Sungkyunkwan University

Yonsei University

Korea Advanced Institute of Science and Technology

Korea University

Centre National de la Recherche Scientifique

Kyungpook National University

Hanyang University

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Optimised Ni³⁺/Ni²⁺ and Mn³⁺/Mn²⁺ Ratios in Nickel Manganese Layered Double Hydroxide for Boosting Oxygen and Hydrogen Evolution Reactions

ChemElectroChem (2022)

Malarkodi Duraivel Saravanan Nagappan Kang Hyun Park Kandasamy Prabakar

Abstract NiMn layered double hydroxide (LDH) grown hydrothermally on nickel foam substrate for water splitting application is reported. The Ni 3+ /Ni 2+ and Mn 3+ /Mn 2+ ratios are tuned to boost oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) active sites. The best‐optimized half‐cells with NiMn of 0.05 M (OER) and 0.025 M (HER) have the lowest overpotential, but a full‐cell fabricated from them has a higher cell voltage (1.68 V) than a symmetric cell made from 0.1 M NiMn LDH (1.56 V) at 10 mA cm −2 . It is found that the best half cells made from NiMn of 0.05 M (OER) and 0.025 M (HER) have higher series and charge transfer resistance on the HER and OER side, respectively. The calculated specific activity and turnover frequency normalized by electrochemical active surface area also support the individual half‐cell electrode performance, such as 0.05 M (20.19 A g −1 and 0.69 s −1 ) and 0.025 M (−41.91 A g −1 and −1.53 s −1 ) at 550 and −150 mV for OER and HER, respectively. An H‐type cell constructed with an anion exchange membrane delivers robust stability even at a substantially higher current density of 200 mA cm −2 for over 56 hours with the highest Faradaic efficiency of 98.64 % at 1.6 V vs. reversible hydrogen electrode in 1 M KOH.

Oxygen evolution

Overpotential

10.1002/celc.202200822

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Citations (8)

Synthesis and cryogenic mechanical performance of chopped-glass-fiber-reinforced polyisocyanurate foam

Han-guk marin enjinieoring hakoeji (2017)

Jeong-Dae Kim Jeong‐Hyeon Kim Jae‐Hyeok Ahn Sungkyun Park Kang Hyun Park

10.5916/jkosme.2017.41.9.813

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Fracture of the Posterior Process of the Talus With Concomitant Subtalar Dislocation

The Journal of Foot & Ankle Surgery (2015)

Chul Hyun Park Kang Hyun Park

Concomitant

Subtalar joint

10.1053/j.jfas.2015.05.006

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Citations (12)

Synthesis of planar chiral (1,3-disubstituted arene)Mn(CO)3+ cations via addition of nucleophiles to (oxocyclohexadienyl)Mn(CO)3 in the presence of chiral ligandsElectronic supplementary information (ESI) available: experimental section. See http://www.rsc.org/suppdata/cc/b2/b201341j/

Chemical Communications (2002)

Seung Uk Son Kang Hyun Park Seung Jung Lee Hwimin Seo Young Keun Chung

The first example of the synthesis of planar chiral (1,3-disubstituted arene)Mn(CO)3+ cations (3) has been demonstrated by a reaction of (p-cresol)Mn(CO)3+ with KOBut followed by addition of nucleophiles and subsequent quenching with electrophiles in the presence of (S)-binaphthol in CH2Cl2.

10.1039/b201341j

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Citations (14)

ChemInform Abstract: Ultrasound‐Assisted, Transition‐Metal‐Free Synthesis of Diaryl Tellurides from Aryl Boronic Acids: A Possible Free‐Radical Mechanism.

ChemInform (2015)

Balaji Mohan Sori Hwang Seongwan Jang Kang Hyun Park

Abstract The reaction fails with alkyl and alkenyl boronic acids, such as isopropyl or (E)‐styryl boronic acid.

Free-radical addition

10.1002/chin.201510252

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Phosphine and palladium-free synthesis of aryl and alkenyl boronates: A nano-catalytic approach

Catalysis Communications (2016)

Balaji Mohan Hyuntae Kang Kang Hyun Park

Borylation

10.1016/j.catcom.2016.07.014

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Citations (11)

One-pot synthesis of a rose-like Pd–Fe3O4 nanocatalyst for Sonogashira coupling reactions

Solid State Sciences (2016)

Hyunje Woo Kyoung-Ho Lee Ji Chan Park Kang Hyun Park

Sonogashira coupling

One-pot synthesis

Coupling reaction

Rose (mathematics)

10.1016/j.solidstatesciences.2016.01.010

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Citations (9)

CCDC 190030: Experimental Crystal Structure Determination

The Cambridge Structural Database (2003)

Seung Uk Son Kang Hyun Park Young Keun Chung

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Crystal (programming language)

10.5517/cc6cr09

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Sequential Diels—Alder and Cobalt Octacarbonyl Catalyzed Pauson—Khand Reactions in the Formation of Polycyclic Enones.

ChemInform (2007)

Soo Young Choi Jeong Yong Lee Kang Hyun Park Young Keun Chung

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

10.1002/chin.200748090

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Citations (1)

CCDC 190029: Experimental Crystal Structure Determination

The Cambridge Structural Database (2003)

Seung Uk Son Kang Hyun Park Young Keun Chung

Crystal (programming language)

10.5517/cc6cqz7

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Citations (0)