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Journals

Novel Approach for Predicting High Uranium Concentration in Molten Salt Fuels via Phase Transition Temperature Variation

Wonseok Yang, Taehyoung Kim, Chan-Yong Jung, Han Lim Cha, Saehyun Choi, Taehoon Park, In-Ho Jung, Sang-Eun Bae, Sungyeol Choi*

Journal of Nuclear Materials

Volume 633, Article 157006

2026

Removing Oxygen-Derived Impurities from Molten Chloride Fuel Salts with Aluminium Chloride: Effectiveness and Limitations

Jihun Kim, James Daw, Wonseok Yang, Francesca Brooks-Ward, Molli Forber, Sujeong Lee, Saehyun Choi, Taehoon Park, Richard I. Foster, Clint A. Sharrad, Sungyeol Choi*

Nuclear Engineering and Technology

Volume 58, Issue 12, Article 104629

2026

Ex-Situ and In-Situ Methods for Quantifying Moisture Concentration in MgCl₂-Containing Molten Salts and Their Impact on Materials Corrosion

Jihun Kim, Wonseok Yang, Sujeong Lee, Heejin Park, Hyeonwoo Kim, Taehoon Park, Saehyun Choi, Junwon Kim, Joonsoo Ock, Byeongmin Kong, Sangtae Kim, Clint A. Sharrad, Sungyeol Choi*

Journal of Nuclear Materials

Volume 632, Article 156872

2026

The Effect of Water Content on Metal Oxide Dissolution by Deep Eutectic Solvent

Shuang Liu, Stuart Aberdeen, Richard I. Foster, Woohyun Lim, Kwangseo Kim, Sungyeol Choi*

Chemical Engineering Journal Advances

Volume 27, Article 101340

2026

Machine Learning-Enhanced Electrochemical Sensors for High-Temperature Molten Salts Enabled by Rich Experimental Data Production

Wonseok Yang, Yonadan Choi, Saehyun Choi, Richard I. Foster, Jihun Kim, Sungyeol Choi*

Journal of The Electrochemical Society

Volume 173, Issue 11, Article 117501

2026

Solvometallurgical Recycling of Lithium-Ion Battery Cathode Materials Using Deep Eutectic Solvents and Ionic Liquids

James T. M. Amphlett, Richard I. Foster, Wonseok Yang, Stuart Aberdeen, Sungyeol Choi*

Korean Journal of Chemical Engineering

Volume 43, Issue 11, Pages 3001-3010

2026

Deep Eutectic Solvent Reuse Limitations Driven by Proton Depletion and Hydration-Induced Chemical Drift

Stuart Aberdeen, Shuang Liu, Kwangseo Kim, Woohyun Lim, Richard I. Foster, Sungyeol Choi*

Reaction Chemistry & Engineering

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2026

Acoustic-Filtered Laser-Induced Breakdown Spectroscopy for Monitoring Fission Products in Molten LiCl-KCl Eutectic during Salt Fluctuations

Yunu Lee, Richard I. Foster, Hyeongbin Kim, Sungyeol Choi*

Talanta

Volume 298, Article 129013

2026

Nickel and Cobalt Separation via Speciation using Deep Eutectic Solvent-based Ion Exchange

Stuart Aberdeen, Richard I. Foster, Sungyeol Choi*

Separation and Purification Technology

Volume 375, Article 133833

2025

Paint Casting as an Alternative for Recycling Critical Metals from Metal Oxides and Spent Lithium-ion Batteries in Deep Eutectic Solvent

Woohyun Lim, Richard I. Foster, Stuart Aberdeen, Kwangseo Kim, Shuang Liu*, Sungyeol Choi*

Chemical Engineering Journal

Volume 525, Article 170626

2025

Nuclide Inventory Analysis and Fission Product Monitoring for Nuclear Safeguards in Molten Chloride Fast Reactors

Saehyun Choi, Jeongwon Seo, Wonseok Yang, Jihun Kim, Taehoon Park, Sujeong Lee, Sungyeol Choi*

Nuclear Engineering and Technology

Volume 57, Issue 11, Article 103793

2025

Self-Adaptive MgAl₂O₄ Spinel Layer for Enhanced Corrosion Resistance of Alumina-Forming Alloy in Molten Chloride Salts

Jun Heo, Jihun Jung, Taehoon Park, Jichan Kim, Sungwoo Kim, Sungyeol Choi, Dongchan Jang, Sung Oh Cho*

Corrosion Science

Volume 256, Article 113262

2025

Thermal Stability and Eutectic Point of Chloride-Based High-Temperature Molten Salt Energy Systems

Sunghyun Yoo, Jihun Kim, Sungyeol Choi, Jeong Ik Lee*

Energies

Volume 18, Issue 14, Article 3616

2025

A Rapid Microplasma Electrochemical Method for Spent Li-ion Battery Cathode Recycling under Ambient Condition

Shuang Liu, Junhan Luo, Qi Qing, Zhe Wang, Zhipeng Wang, Richard I. Foster, Sungyeol Choi*, Yuexiang Lu*

CCS Chemistry

Volume 7, Issue 7, Pages 2024-2033

2025

Quantitative Analysis of Trace Metal Ions in Aqueous Solutions Using Electrodeposition-Assisted Laser-Induced Breakdown Spectroscopy (EA-LIBS)

Hyeongbin Kim, Yunu Lee, Wonseok Yang, Richard I. Foster, Sungyeol Choi*

Korean Journal of Chemical Engineering

Volume 42, Issue 6, Pages 1197-1205

2025

The Effect of Water Content on Cathode Materials Leaching using Deep Eutectic Solvent

Shuang Liu, Wooseok Chung, Richard I. Foster, Sungyeol Choi*

Journal of Molecular Liquids

Volume 426, Article 127483

2025

Corrosion Behaviors of Pre-Oxidized Al-Containing Fe Alloys in Molten NaCl-KCl Salts

Taehoon Park, Wonseok Lee, Sumin Kim, Hyun Joon Eom, Wonseok Yang, Richard I. Foster, Chaewon Kim, Sungyeol Choi*, Changheui Jang*

Journal of Materials Research and Technology

Volume 36, Pages 5237-5246

2025

Degradation of p-Toluene Sulfonic Acid–Choline Chloride Deep Eutectic Solvent

Wonseok Yang, James T. M. Amphlett, Nayoung Kim, Richard I. Foster*, Sungyeol Choi*

ChemistrySelect

Volume 10, Issue 16, Article e202405130

2025

Trace Xenon Detection in Ambient Helium by Double-Pulse Laser-Induced Breakdown Spectroscopy

L. Garrett, M. Burger, Y. Lee, H. Kim, P. Sabharwall, S. Choi, I. Jovanovic*

Journal of Analytical Atomic Spectrometry

Volume 40, Issue 1, Pages 122-129

2025

Ultra-Fast and Eco-Friendly Recycling Process for Spent LIBs Using Deep Eutectic Solvents: Mechanism and Life-Cycle Insight

Shuang Liu, Shuangjun Li*, Xiangkun Elvis Cao*, Sungyeol Choi*

Green Chemistry

Volume 27, Issue 45, Pages 14648-14657

2025

Electrochemical Monitoring for Molten Salt Pyroprocessing of Spent Nuclear Fuel: A Review

Wonseok Yang, Richard I. Foster, Jihun Kim, Sungyeol Choi*

Korean Journal of Chemical Engineering

Volume 41, Issue 10, Pages 2781-2797

2024

Corrosion Behaviour of Al-Containing Alloys in Cl-Based Molten Salt Environment

Bright O. Okonkwo, Chaewon Kim, Taejeong An, Changheui Jang*, Dokyu Kang, Wonseok Yang, Sungyeol Choi

Journal of Nuclear Materials

Volume 599, Article 155207

2024

Rotating Disk Electrode Study of Sm(III)/Sm(II) in LiCl-KCl Eutectic Molten Salt

Wonseok Yang, Suhee Choi, Tae-Hong Park, Sungyeol Choi*, Sang-Eun Bae*

Journal of The Electrochemical Society

Volume 171, Issue 9, Article 096508

2024

Data Fusion of Acoustic and Optical Emission from Laser-Induced Plasma for In Situ Measurement of Rare Earth Elements in Molten LiCl-KCl

Yunu Lee, Richard I. Foster, Hyeongbin Kim, Londrea Garrett, Bryan W. Morgan, Miloš Burger, Igor Jovanovic, Sungyeol Choi*

Analytical Chemistry

Volume 96, Issue 28, Pages 11255-11262

2024

Spectroscopic and Theoretical Analyses of the Reaction of SrO in Molten Chloride and Fluoride Salts

Dokyu Kang, Choah Kwon, Wonseok Yang, Seokjoo Yoon, Yunu Lee, James T. M. Amphlett, Sang-Eun Bae, Sangtae Kim*, Sungyeol Choi*

Journal of Nuclear Materials

Volume 592, Article 154962

2024

Imine-linkage Covalent Organic Framework Synthesis in Deep Eutectic Solvent at Ambient Conditions

Shuang Liu, Qi Qing, Richard I. Foster, Zhe Wang, Nakkyu Chae, Dongyoon Shin, Sungyeol Choi*, Yuexiang Lu*

Journal of Cleaner Production

Volume 434, Article 139970

2024

Microelectrode Voltammetric Analysis of Samarium Ions in LiCl–KCl Eutectic Molten Salt

Wonseok Yang, Na-ri Lee, Chanyong Jung, Tae-Hong Park*, Sungyeol Choi*, Sang-Eun Bae*

Electrochemistry Communications

Volume 149, Article 107470

2023

Direct Electrochemical Dissolution of Metallic Uranium into Deep Eutectic Solvent

Wonseok Yang, Chanyong Jung, Han Lim Cha, Jun Woo Park, Richard I. Foster, James T. M. Amphlett, Shuang Liu, Sang-Eun Bae, Jong-Il Yun, Sungyeol Choi*

Journal of Nuclear Materials

Volume 575, Article 154229

2023

Machine Learning-Assisted Laser-Induced Breakdown Spectroscopy for Monitoring Molten Salt Compositions of Small Modular Reactor Fuel Under Varying Laser Focus Positions

Yunu Lee, Richard I. Foster, Hyeongbin Kim, Sungyeol Choi*

Analytica Chimica Acta

Volume 1241, Article 340804

2023

Impact of Glass Irradiation on Laser-Induced Breakdown Spectroscopy Data Analysis

Londrea J. Garrett*, Bryan W. Morgan, Miloš Burger, Yunu Lee, Hyeongbin Kim, Piyush Sabharwall, Sungyeol Choi, Igor Jovanovic

Sensors

Volume 23, Issue 2, Article 691

2023

In-Situ Measurement of Ce Concentration in High-Temperature Molten Salts Using Acoustic-Assisted Laser-Induced Breakdown Spectroscopy with Gas Protective Layer

Yunu Lee, Seokjoo Yoon, Nayoung Kim, Dokyu Kang, Hyeongbin Kim, Wonseok Yang, Miloš Burger, Igor Jovanovic, Sungyeol Choi*

Nuclear Engineering and Technology

Volume 54, Issue 12, Pages 4431-4440

2022

The Curious Temperature Dependence of Fluoride Molten Salt Thermal Conductivity

Sean G. Robertson*, Ralph Wiser, Wonseok Yang, Dokyu Kang, Sungyeol Choi, Emilio Baglietto, Michael P. Short

Journal of Applied Physics

Volume 131, Issue 22, Article 225102

2022

Zirconium Metal Recovery from Irradiated Radioactive Zirconium Alloy via Chloride-based Electrorefining and Thermal Decomposition of ZrCl

Jungho Hur*, Younghwan Jeon, Gwan Yoon Jeong, Sungjune Sohn, Sungyeol Choi, Jaeyeong Park*

International Journal of Energy Research

Volume 46, Issue 5, Pages 6164-6176

2022

Investigation of Dissolution Behavior of SrO in Molten LiCl-KCl Salts for Heat Reduction of Used Nuclear Fuel

Dokyu Kang, Nakkyu Chae, Wonseok Yang, Seokjoo Yoon, Richard I. Foster, James T. M. Amphlett, Sang-Eun Bae, Eun-Young Choi*, Sungyeol Choi*

Journal of Nuclear Materials

Volume 562, Article 153615

2022

Surface Decontamination of Protective Duplex Oxide Layers on Stainless Steel Waste using Deep Eutectic Solvents

Nayoung Kim, Wonseok Yang, James T. M. Amphlett, Dokyu Kang, Yunu Lee, Jae Joon Kim, Ho Jin Ryu, Sungyeol Choi*

Journal of Hazardous Materials

Volume 425, Article 128000

2022

Characterization of Nd-Bi Intermetallic Compound Formations by Co-reduction of Nd(III) and Bi(III) in Molten LiCl-KCl Eutectic

Beom Kyu Kim, Sungyeol Choi, Byung Gi Park*

Electrochimica Acta

Volume 406, Article 139849

2022

Spectroscopic Study into Lanthanide Speciation in Deep Eutectic Solvents

James T. M. Amphlett, Yunu Lee, Wonseok Yang, Dokyu Kang, Nark-Eon Sung, Jaeyeong Park, Euo Chang Jung, Sungyeol Choi*

ACS Omega

Volume 7, Issue 1, Pages 921-932

2022

Computational Model-Based Design of Molten Salt Electrorefining Process for High-Purity Zirconium Metal Recovery from Spent Nuclear Fuel

Sungjune Sohn, Sungyeol Choi, Jaeyeong Park*, Il Soon Hwang*

International Journal of Energy Research

Volume 45, Issue 8, Pages 11775-11790

2021

The Effect of Increasing Water Content on Transition Metal Speciation in Deep Eutectic Solvents

James T. M. Amphlett, Sungyeol Choi*

Journal of Molecular Liquids

Volume 332, Article 115845

2021

Dissolution Behavior of SrO into Molten LiCl for Heat Reduction in Used Nuclear Fuel

Dokyu Kang, James T. M. Amphlett, Sang-Eun Bae, Eun-Young Choi, Sungyeol Choi*

Nuclear Engineering and Technology

Volume 53, Issue 5, Pages 1534-1539

2021

Spectroelectrochemical Behavior of Cr, Fe, Co, Ni in LiCl-KCl Molten Salt for Decontaminating Radioactive Metallic Wastes

Seokjoo Yoon, Sungyeol Choi*

Journal of the Electrochemical Society

Volume 168, Issue 1, Article 013504

2021

Probing Ni²⁺ and Co²⁺ Speciation in Carboxylic Acid-Based Deep Eutectic Solvents Using UV/Vis and FT-IR Spectroscopy

James T. M. Amphlett, Mark D. Ogden, Wonseok Yang, Sungyeol Choi*

Journal of Molecular Liquids

Volume 318, Article 114217

2020

Reference Electrode at Molten Salt: A Comparative Analysis of Electroceramic Membranes

Seokjoo Yoon+, Dokyu Kang+, Sungjune Sohn, Jaeyeong Park, Minho Lee, Sungyeol Choi*

Journal of Nuclear Fuel Cycle and Waste Technology

Volume 18, Issue 2, Pages 143-155

2020

Rapid identification of Sr on surfaces of metals, porous medium, transparent materials using single-shot laser-induced breakdown spectroscopy

Yunu Lee, James T. M. Amphlett, Heejae Ju, Sungyeol Choi*

Spectrochimica Acta Part B: Atomic Spectroscopy

Volume 159, Article 105649

2019

Multi-Species Hydrodynamic Electrochemical Modeling with Liquid Metal and Rotating Cylinder Electrodes in Molten Salt

Dokyu Kang, Jaeyeong Park, Sungyeol Choi*

Journal of the Electrochemical Society

Volume 165, Issue 16, Pages E860-E871

2018

Transient Modeling of Spent Nuclear Fuel Electrorefining with Liquid Metal Electrode

Seongjin Seo, Sungyeol Choi*, Byunggi Park

Journal of Nuclear Materials

Volume 491, Pages 115-125

2017

Cyclic Voltammetry on Zr, Sn, Fe, Cr and Co in LiCl-KCl Salts at 500℃ for Electrorefining of Irradiated Zircaloy-4 Cladding

Jaeyeong Park*, Sungyeol Choi, Sungjune Sohn, Il Soon Hwang

Journal of the Electrochemical Society

Volume 164, Issue 12, Pages D744-D751

2017

Electrochemical Investigation of Exchange Current Density of Uranium and Rare Earths Couples (M³⁺/M⁰) in LiCl–KCl Eutectic Electrolyte

Kwang-Rag Kim*, Sungyeol Choi, Jung-Guk Kim, Seungwoo Paek, Won Il Ko

International Journal of Electrochemical Science

Volume 10, Issue 9, Pages 7660-7670

2015

Comparison between Numerical Simulations and Experimental Results on Copper Deposition in Rotating Cylinder Hull Cell

Jaeyeong Park, Sungyeol Choi*, Robert O. Hoover, Kwang-Rag Kim, Sungjun Son, Yong Hoon Shin, Supathorn Phongikaroon, Michael F. Simpson, Il Soon Hwang

Electrochimica Acta

Volume 164, Pages 218-226

2015

Preliminary Conceptual Design and Cost Estimation for Korea Advanced Pyroprocessing Facility Plus (KAPF+)

Won Il Ko*, Ho Hee Lee, Sungyeol Choi, Sung Ki Kim, Byung Heung Park, Hyo Jik Lee, In Tae Kim, Han Soo Lee

Nuclear Engineering and Design

Volume 277, Pages 212-224

2014

Preliminary Conceptual Design and Cost Estimation for SFR Fuel Manufacturing Facility (SFMF)

Won Il Ko*, Ho Hee Lee, Sungyeol Choi, Ki Hwan Kim, Sung Ki Kim, Byung Heung Park, Hyo Jik Lee, In Tae Kim, Han Soo Lee

Nuclear Engineering and Design

Volume 277, Pages 225-233

2014

Effects of Operating Conditions on Molten-salt Electrorefining for Zirconium Recovery from Irradiated PWR Zircaloy-4 Cladding

Jaeyeong Park*, Sungyeol Choi, Sungjune Son, Kwang-Rag Kim, Il Soon Hwang

Nuclear Engineering and Design

Volume 275, Pages 44-52

2014

Computational Electrochemo-fluid Dynamics Modeling in a Uranium Electrowinning Cell

Kwang-Rag Kim*, Sungyeol Choi, Si Hyung Kim, Jun-Bo Shim, Seungwoo Paek, In Tae Kim

Journal of Radioanalytical and Nuclear Chemistry

Volume 299, Issue 1, Pages 165-170

2014

Cyclic Voltammetry on Zirconium Redox Reactions in LiCl-KCl-ZrCl₄ at 500℃ for Electrorefining Contaminated Zircaloy-4 Cladding

Jaeyeong Park*, Sungyeol Choi, Sungjun Son, Kwang-Rag Kim, Il Soon Hwang

Journal of the Electrochemical Society

Volume 161, Issue 3, Pages H97-H104

2014

Electrochemical Hydrodynamics Modeling Approach for a Copper Electrowinning Cell

Kwang-Rag Kim*, Sungyeol Choi, Seungwoo Paek, Jaeyeong Park, Il Soon Hwang, Yongju Jung

International Journal of Electrochemical Science

Volume 8, Issue 11, Pages 12333-12347

2013

Uncertainty Studies of Real Anode Surface Area in Computational Analysis for Pyrochemical Electrorefining

Sungyeol Choi*, Jaeyeong Park, Robert O. Hoover, Supathorn Phongikaroon, Michael F. Simpson, Kwang-Rag Kim, Il Soon Hwang

Journal of Nuclear Materials

Volume 416, Issue 3, Pages 318-326

2011

Electro-fluid Analysis of a Molten-salt Electrorefiner with Rotating Cruciform Anode Baskets

Kwang-Rag Kim*, Sungyeol Choi, Do-Hee Ahn, Seungwoo Paek, Han-Soo Lee, Il Soon Hwang

Journal of Radioanalytical and Nuclear Chemistry

Volume 286, Issue 3, Pages 801-806

2010

Three-dimensional Multispecies Current Density Simulation of Molten-salt Electrorefining

Sungyeol Choi*, Jaeyeong Park, Kwang-Rag Kim, Hyo Sook Jung, Il Soon Hwang, Byung Gi Park, Kyung Woo Yi, Han-Soo Lee, Do Hee Ahn, Seungwoo Paek

Journal of Alloys and Compounds

Volume 503, Issue 1, Pages 177-185

2010

Multi-physics Modeling of a Molten-salt Electrolytic Process for Nuclear Waste Treatment

Kwang-Rag Kim*, Sungyeol Choi, Jung-Guk Kim, Seungwoo Paek, Do-Hee Ahn, Sang-Woon Kwon, Jun-Bo Shim, Si-Hyung Kim, Han-Soo Lee, Byung-Gi Park, Kyung-Woo Yi, Il Soon Hwang

IOP Conference Series: Materials Science and Engineering

Volume 9, Issue 1, Article 012002

2010

Computational Analysis of a Molten-Salt Electrochemical System for Nuclear Waste Treatment

Kwang-Rag Kim*, Sungyeol Choi, Do-Hee Ahn, Seungwoo Paek, Byung-Gi Park, Han-Soo Lee, Kyung-Woo Yi, Il Soon Hwang

Journal of Radioanalytical and Nuclear Chemistry

Volume 282, Issue 2, Pages 449-453

2009

SNUNFC
SNUNFC

Department of Nuclear Engineering, Seoul National University

1, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea

Since 2015 Nuclear Fuel Cycle & Nonproliferation Lab. All Rights Reserved.

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