Publications de Jinhyun Kim | EPFL Graph Search

Evaluation of the damping ratio of compacted sodium and calcium bentonites in unsaturated conditions

Bentonites are going to be part of the Engineered Barrier System (EBS) in deep geological disposal facilities for the safe disposal of spent nuclear fuel. Some of these repositories might be constructed in tectonically active locations, and some other repo ...

2024

Emergent CuWO4 Photoanodes for Solar Fuel Production: Recent Progress and Perspectives

Jinhyun Kim

Solar fuel production using a photoelectrochemical (PEC) cell is considered as an effective solution to address the climate change caused by CO2 emissions, as well as the ever-growing global demand for energy. Like all other solar energy utilization techno ...

2023

Bulk and surface modified polycrystalline CuWO4 films for photoelectrochemical water oxidation

Jinhyun Kim

Polycrystalline CuWO4 film is an emerging photoanode material for photoelectrochemical (PEC) water splitting with a small bandgap to absorb visible light and excellent stability in a neutral electrolyte. However, its PEC performance is quite low mainly due ...

Pergamon-Elsevier Science Ltd2023

Pulsed Electrolysis of Boron-Doped Carbon Dramatically Improves Impurity Tolerance and Longevity of H2O2 Production

Jinhyun Kim

Electrocatalytic water treatment has emerged in the limelight of scientific interest, yet its long-term viability remains largely in the dark. Herein, we present for the first time a comprehensive framework on how to optimize pulsed electrolysis to bolster ...

2023

Formate as Anti-Oxidation Additives for Pb-Free FASnI(3) Perovskite Solar Cells

Jiyoun Seo, Jaeki Jeong, Jinhyun Kim, Jiwon Kim

Pb-free Sn-based perovskite solar cells (PSCs) have significant potential for application in photovoltaic devices because oftheir suitable bandgap, low exciton binding energy, high carrier mobility, and long diffusion length. However, their performance is ...

WILEY-V C H VERLAG GMBH2022

A Protocol for Electrocatalyst Stability Evaluation: H2O2 Electrosynthesis for Industrial Wastewater Treatment

Jinhyun Kim

Electrocatalysis has been proposed as a versatile technology for wastewater treatment and reuse. While enormous attention has been centered on material synthesis and design, the practicality of such catalyst materials remains clouded by a lack of both stab ...

2022

Boosting the performance of Cu2O photocathodes for unassisted solar water splitting devices

Ulf Anders Hagfeldt, Amita Ummadisingu, Matthew Thomas Mayer, Jingshan Luo, Minkyu Son, Linfeng Pan, Jinhyun Kim

Although large research efforts have been devoted to photoelectrochemical (PEC) water splitting in the past several decades, the lack of efficient, stable and Earth-abundant photoelectrodes remains a bottleneck for practical application. Here, we report a ...

2018

Long-Range π-Conjugation in Phenothiazine-containing Donor-Acceptor Dyes for Application in Dye-Sensitized Solar Cells

Michael Graetzel, Jacques-Edouard Moser, Shaik Mohammed Zakeeruddin, Carole Graetzel, Thomas Moehl, Mateusz Barnaba Wielopolski, Yuxiang Yu, Jinhyun Kim

Four organic donor–π-bridge–acceptor dyes containing phenothiazine as a spacer and cyanoacrylic acid as an acceptor were synthesized and tested as sensitizers in dye-sensitized solar cells (DSCs). The influence of iodide- and cobalt-based redox electrolyte ...

Wiley-VCH Verlag Berlin2015

Position-Dependent Extension of π-Conjugation in D-π-A Dye Sensitizers and the Impact on the Charge-Transfer Properties

Michael Graetzel, Jacques-Edouard Moser, Shaik Mohammed Zakeeruddin, Thomas Wesley Holcombe, Mateusz Barnaba Wielopolski, Yuxiang Yu, Jinhyun Kim

A series of five organic donor-π-bridge-acceptor (D-π-A) sensitizers is investigated within the context of their photoinduced charge-transfer properties. Thereby, the focus is set on the impact of structural modifications of the molecular architecture on t ...

American Chemical Society2013

A feeder-free, defined three-dimensional polyethylene glycol-based extracellular matrix niche for culture of human embryonic stem cells

Jeffrey Alan Hubbell, Seung Tae Lee, Jinhyun Kim

We report optimization of a serum- and feeder-free, three-dimensional (3D) niche created with a synthetic polyethylene glycol (PEG)-based extracellular matrix for self-renewal of human embryonic stem cells (hESCs). Three hESC lines (H9, H1 and Novo) were c ...

Elsevier Sci Ltd2013

Molecular engineering of panchromatic unsymmetrical squaraines for dye-sensitized solar cell applications

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jinhyun Kim

Three unsymmetrical squaraine dyes JK-64, JK-65, and JK-64Hx, containing a bulky spirobifluorene or hexyloxyphenyl unit are designed and synthesized. These sensitizers, when anchored onto a TiO2 surface, exhibit decreased aggregation as well as enhanced un ...

Royal Society of Chemistry2010