Publications

Review article

Transition metal chalcogenide–based alkaline hydrogen evolution reaction electrocatalysts: Activity, structural reconstruction, and stability

Eunsu Noh, Wooseok Jeong, Hyeonseok Lee, Yeongbin Lee, Don-Hyung Ha*
Current Opinion in Electrochemistry, 2026.

Research article

Ni–P Nanoarray Scaffolds that Elevate Self-Supported Phosphides and Commercial Catalysts for Alkaline and Anion-Exchange-Membrane Water Electrolysis

Hyeonseok Lee, Tai The Mai, Wooseok Jeong, Jin Young Kim, Yoonsu Park, Yun Jae Hwang, Boeun An, Yeongbin Lee, Gyuhyeon Kim, Heesoo Jeong, Yujeong Ahn, Chanbi Kim, Dong Hwan Wang, Segeun Jang* and Don-Hyung Ha*
Small, 2026.

Research article

Deciphering Interfacial Electronic Interactions Between Iridium Oxide and Ni-Based Supports for High-Current-Density Anion Exchange Membrane Water Electrolysis

Yeongbin Lee†, Seohyeon Jang†, Seokjin Hong, Seoyeon Jeong, Ju Young Kim, Wooseok Jeong, Hyeonseok Lee, Gyuhyeon Kim, Hyungbin Son, Sang Hyun Ahn*, Inho Nam*, and Don-Hyung Ha* (†= equally contributed),
Small, 2026.

Research article

Cobalt-Engineered Multimetallic Phosphides with Switchable HER–OER Activity for Durable Anion Exchange Membrane Water Electrolysis

Yoonsu Park†, Seyoung Choi†, Tae Kyung Lee†, Hyung Wook Choi, Jong-kyeong Ryu, Wooseok Jeong, Yoojoong Han, Okkyun Seo, Myeong-Geun Kim, Jae Hyun Kim, Seohyeon Jang, Eungjun Lee, Subin Park, Docheon Ahn, Hyungbin Son, Sung Jong Yoo*, Inho Nam*, Don-Hyung Ha* (†= equally contributed)
Advanced Functional Materials, 2026.

Review article

Recent advances in ion exchange membrane-based electrochemical hydrogenation of liquid organic hydrogen carrier

Seokjin Hong, Gyeong Ho Han, Inho Nam, Don-Hyung Ha, Soo-Kil Kim, Sung Ki Cho, Hyun S. Park, Jong Hyun Jang, Myoung Hwan Oh*, Sang Hyun Ahn*
Fuel, 2026.

Review article

Strategies for Enhancing SiO2 Chemical-Mechanical Polishing (CMP): Functional Nanoparticle Abrasive Design and Integration

Hyeonseok Lee†, Gyuhyeon Kim†, Wooseok Jeong, Yeongbin Lee, Heesoo Jeong, Yujeong Ahn, Chanbi Kim, Don-Hyung Ha* (†= equally contributed)
Chemistry - A European Journal, 2026.

Research article

Colloidal phase control of Ni–P nanocrystals reveals a P-site hydrogen evolution reaction mechanism distinct from Ni-rich analogues

Yeongbin Lee, Seyoung Choi, Seohyeon Jang, Byeong-Gwan Cho, Beomgyun Jeong, Yongsam Kim, Yoonsu Park, Wooseok Jeong, Yun Jae Hwang, Hyeonseok Lee, Boeun An, Heesoo Jeong, Gyuhyeon Kim, Dong-Chen Qi, Jong Hyun Jang*, Inho Nam* and Don-Hyung Ha*
Journal of Materials Chemistry A HOT Papers, 2026.

Research article

Heterostructure formation and chemical modulation of colloidal Au–Co–Fe nanoparticles for alkaline water oxidation

Gyuhyeon Kim, Wooseok Jeong, Hyeonseok Lee, Yeongbin Lee, Heesoo Jeong, Don-Hyung Ha*
Journal of the American Ceramic Society, 2025.

- Cover selection

Research article

Engineered substrate-driven electrophoretic deposition of FeP nanoparticles for high-performance hydrogen evolution reaction electrodes

Yoonsu Park, Don-Hyung Ha*
International Journal of Hydrogen Energy, 2025.

- Cover selection

Research article

High-entropy CoNiFeCuP nanoparticles as efficient and durable catalysts for alkaline oxygen evolution reaction”

Heesoo Jeong, Yoonsu Park, Yeongbin Lee, Wooseok Jeong, Hyeonseok Lee, Gyuhyeon Kim, Goohwan Kim, Hyungbin Son, Don-Hyung Ha*
Journal of Materials Chemistry A, 2025.

- Cover selection

Research article

Selective synthesis of uniform iron oxide nanoparticles: Influence of precursors, temperature, and surfactant concentration”

Yun-Kun Hong, Yoonsu Park, Don-Hyung Ha*
Modern Physics Letters B, 2025.

- Cover selection

Review article

Solution processing for colloidal nanoparticle thin film: From fundamentals to applications

Wooseok Jeong†, Hyeonseok Lee†, Yun Jae Hwang, Boeun An, Yeongbin Lee, Heesoo Jeong, Gyuhyeon Kim, Yoonsu Park, Minyoung Kim, Don-Hyung Ha* (†= equally contributed)
Advances in Colloid and Interface Science, 2025.

- Cover selection

Review article

Colloidal-nanoparticle-derived nickel/ferric oxide heterointerfaces for promoting the alkaline oxygen evolution reaction†

Wooseok Jeong†, Yun-Kun Hong†, Hoyoung Kim, Yoonsu Park, Yun Jae Hwang, Yeongbin Lee, Goohwan Kim, Hyung Bin Son, Jinwoo Lee*, Don-Hyung Ha* (†= equally contributed)
Journal of Materials Chemistry A, 2025.

- Inside Front Cover selection

- Journal of Materials Chemistry A HOT Papers

Research article

Ionomer-free Co-Ru based electrode for efficient proton exchange membrane water electrolysis via synergistic catalysis

Yoonsu Park†, Boeun An†, Hoyoung Kim, Wooseok Jeong, Hyeonseok Lee, Yeongbin Lee, Heesoo Jeong, Gyuhyeon Kim, Jong Hyun Jang*, Sung Jong Yoo*, Don-Hyung Ha* (†= equally contributed)
Chemical Engineering Journal, 2025.

Research article

Basics, developments, and strategies of transition metal phosphides toward electrocatalytic water splitting: beyond noble metal catalysts

Yeongbin Lee†, Wooseok Jeong†, Yun Jae Hwang, Boeun An, Hyeonseok Lee, Heesoo Jeong, Gyuhyeon Kim, Yoonsu Park, Minyoung Kim and Don-Hyung Ha* (†= equally contributed)
Journal of Materials Chemistry A, 2024.

- Front Cover selection

Research article

Kinetically controlled morphology and composition of colloidal nanoparticles: cation exchange reactions from copper sulfide to transition metal (Mn, Zn, Fe, and Co) sulfides

Boeun An, Wooseok Jeong, Yun Jae Hwang, Hyeonseok Lee, Yeongbin Lee, Heesoo Jeong, Gyuhyeon Kim and Don-Hyung Ha*
Journal of Materials Chemistry A, 2024.

Review article

Wet Chemistry Methods for Synthesizing High-Entropy Nanoparticles: A Review of the Synthesis Strategies and Various Applications

Hyeonseok Lee†, Heesoo Jeong†, Wooseok Jeong, Yun Jae Hwang, Boeun An, Yeongbin Lee, Gyuhyeon Kim and Don-Hyung Ha* (†= equally contributed)
Korean Journal of Chemical Engineering, 2024.

Research article

Morphology Control of Au-Ni Hybrid Nanoparticles: Exploring Heterostructures and Optical Tuning

Yun Jae Hwang, Yoonsu Park, Wooseok Jeong, Minyoung Kim, Hyeonseok Lee, Boeun An, Yeongbin Lee, Heesoo Jeong, Gyuhyeon Kim, Jonghoon Choi, and Don-Hyung Ha*
Inorganic Chemistry, 2024.

Research article

Cation-exchange-induced structural and chemical modulation of transition metal spinel sulfides to enhance their oxygen evolution performance

Eunseo Hwang, Minyoung Kim, Wooseok Lee, Yoonsu Park, Wooseok Jeong, Yun Jae Hwang, Yeongbin Lee, Shinhyo Bang, Goohawn Kim, Liane M. Moreau, Hyung Bin Son, Seoin Back, and Don-Hyung Ha*
Chemical Engineering Journal, 2024.

Research article

Synergistic enhancement of surface-doped Mn and Cu-mediated hierarchical reconstruction in Co–Ni–Cu–Mn electrocatalyst for hydrogen production in proton exchange membrane water electrolyzer

Yoonsu Park, Kyeong-Rim Yeo, Yun Jae Hwang, Minyoung Kim, Wooseok Jeong,Soo-Kil Kim*, and Don-Hyung Ha*
Journal of Alloys and Compounds, 2024.

Research article

Extremely Stable Ag‐Based Photonics, Plasmonic, Optical, and Electronic Materials and Devices Designed with Surface Chemistry Engineering for Anti‐Tarnish

Junhyuk Ahn, Doa Kim, Junhyeok Park, Yoonji Yang, Mi‐Hyun Kim, Hyung Jin Choi, Wooseok Jeong, Woo Seok Lee, Dae Yang Oh, Don‐Hyung Ha*, Sung‐Hoon Hong*, and Soong Ju Oh*
Small, 2024.

Research article

Defect Engineering of Metal Halide Perovskite Nanocrystals via Spontaneous Diffusion of Ag Nanocrystals

Sanghyun Jeon, Junhyuk Ahn, Myung-Chul Jung, Ho Kun Woo, Junsung Bang, Byung Ku Jung, Seongkeun Oh, Sang Yeop Lee, Kyu Joon Lee, Taejong Paik, Don-Hyung Ha, Jae-Pyoung Ahn, Sohee Jeong, Dong Hoe Kim, Jun Hong Noh, Ho Seong Jang*, Myung Joon Han*, and Soong Ju Oh*
Small, 2023.

Research article

Design of Eu(TTA)3phen-incorporated SiO2 coated transition metal oxide nanoparticles for efficient luminescence and magnetic performance

Yun-Kun Hong, Hyun Tae Kim, Yoonsu Park, Wooseok Jeong, Minyoung Kim, Eunseo Hwang, Yun Jae Hwang, Min-Ho Lee, and Don-Hyung Ha*
Nanoscale, 2023.

Research article

How Do Colloidal Nanoparticles Move in a Solution Under an Electric Field?: In Situ Light Scattering Analysis

Wooseok Jeong, Yoonsu Park, Yun-Kun Hong, Ildoo Kim, Hyungbin Son*, and Don-Hyung Ha* The Journal of Physical Chemistry Letters, 2023.

Research article

Facile colloidal synthesis of transition metal (Co, Fe, and Ni)-added Ir-W NPs for HER in acidic electrolyte

Minyoung Kim, Hyeri Kang, Eunseo Hwang, Yoonsu Park, Wooseok Jeong, Yunjae Hwang, and Don-Hyung Ha*
Applied Surface Science, 2023.

Research article

Contact Enhancement in Nanoparticle Assemblies through Electrophoretic Deposition

Yoonsu Park, Wooseok Jeong, Junhyuk Ahn, Yun-Kun Hong, Eunseo Hwang, Minyoung Kim, Yun Jae Hwang, Soong Ju Oh, and Don-Hyung Ha*
ACS Omega, 2022.

Research article

Acid–Base Reaction-Assisted Quantum Dot Patterning via Ligand Engineering and Photolithography

Jung Ho Bae, Suhyeon Kim, Junhyuk Ahn, Chanho Shin, Byung Ku Jung, Yong Min Lee, Yun Kun Hong, Woosik Kim, Don Hyung Ha, Tse Nga Ng, Jiwan Kim*, and Soong Ju Oh*
ACS Applied Materials & Interfaces, 2022.

Research article

Transition-metal-incorporated molybdenum phosphide nanocatalysts synthesized through post-synthetic transformation for the hydrogen evolution reaction

Minyoung Kim, Yoonsu Park, Taegyeom Lee, Yun‐kun Hong, and Don‐Hyung Ha*
International Journal of Energy Research, 2022.

Research article

Design of Nanocatalyst for Electrode Structure: Electrophoretic Deposition of Iron Phosphide Nanoparticles to Produce a Highly Active Hydrogen Evolution Reaction Catalyst

Yoonsu Park, Hoyoung Kim, Taegyeom Lee, Yun-Kun Hong, Wooseok Jeong, Soo-Kil Kim, and Don-Hyung Ha* Chemical Engineering Journal, 2022.

Research article

Restructured Co-Ru alloys via electrodeposition for efficient hydrogen production in proton exchange membrane water electrolyzers

Taegyeom Lee, Yoonsu Park, Hoyoung Kim, Yun-Kun Hong, Eunseo Hwang, Minyoung Kim, Soo-Kil Kim*, and Don-Hyung Ha*
International Journal of Energy Research, 2022.

Research article

Imaging atomic-scale chemistry from fused multi-modal electron microscopy

Jonathan Schwartz, Zichao Wendy Di, Yi Jiang, Alyssa J. Fielitz, Don-Hyung Ha, Sanjaya D. Perera, Ismail El Baggari, Richard D. Robinson, Jeffrey A. Fessler, Colin Ophus, Steve Rozeveld, and Robert Hovden*
npj computational materials, 2022.

Research article

Facile Sulfurization under Ambient Condition with Na2S to Fabricate Nanostructured Copper sulfide

Eunseo Hwang, Yoonsu Park, Jongbae Kim, Taejong Paik, and Don-Hyung Ha*
Nanomaterials, 2021.

Research article

Nanoparticle transformation from ZnO to ZnS through anion exchange with di-tert-butyl disulphide

Yun-Kun Hong, Yoonsu Park, Hyeri Kang, Hyungbin Son*, and Don-Hyung Ha*
Dalton Transactions, 2021.

Research article

Labeling and tracking cells with gold nanoparticles

Ramya Chandrasekaran, Thiagarajan Madheswaran, Nagendran Tharmalingam, Rajendran JC Bose, Hansoo Park*, and Don-Hyung Ha*
Drug Discovery Today, 2021.

Research article

Electrophoretic Deposition of Aged and Charge Controlled Colloidal Copper Sulfide Nanoparticles

Yoonsu Park, Hyeri Kang, Wooseok Jeong, Hyungbin Son*, and Don-Hyung Ha*
Nanomaterials, 2021.

Research article

Solvent-Induced Charge Formation and Electrophoretic Deposition of Colloidal Iron Oxide Nanoparticles

Hyeri Kang, Yoonsu Park, Yun-Kun Hong, Songhun Yoon, Min-Ho Lee, and Don-Hyung Ha*
Surfaces and Interfaces, 2021.

Research article

Colloidal synthetic methods of amorphous molybdenum phosphide nanoparticles for hydrogen evolution reaction catalysts

Hyeri Kang†, Taegyeom Lee†, Yoonsu Park, Yun-Kun Hong, Miri Choi, Jiung Cho, and Don-Hyung Ha*
Korean Journal of Chemical Engineering, 2020.

Research article

Influence of the phosphorus source on iron phosphide nanoparticle synthesis for hydrogen evolution reaction catalysis

Yoonsu Park, Hyeri Kang, Yun-kun Hong, Geonhee Cho, Miri Choi, Jiung Cho, Don-Hyung Ha*
International Journal of Hydrogen Energy, 2020.

Research article

Transition metal-doped FeP nanoparticles for hydrogen evolution reaction catalysis

Geonhee Cho†, Yoonsu Park†, Hyeri Kang, Yun-kun Hong, Taegyeom Lee, and Don-Hyung Ha*
Applied Surface Science, 2020.

Research article

Colloidal-annealing of ZnO nanoparticles to passivate traps and improve charge extraction in colloidal quantum dot solar cells

Ho Kun Woo, Min Su Kang, Taesung Park, Junsung Bang, Sanghyun Jeon, Woo Seok Lee, Junhyuk Ahn, Geonhee Cho, Dong-Kyun Ko, Younghoon Kim, Don-Hyung Ha, and Soong Ju Oh*
Nanoscale, 2019.

Research article

Highly Conductive Off-Stoichiometric Zirconium Oxide Nanofiber with Controllable Crystalline Structures and Bandgaps and Improved Electrochemical Activities

Na-Won Lee, Ki Ro Yoon, Jae-Yun Lee, Yoonsu Park, Seong-Ji Pyo, Ga-Yoon Kim, Don-Hyung Ha, and Won-Hee Ryu*
ACS Applied Energy Materials, 2019.

Review article

Ion exchange: an advanced synthetic method for complex nanoparticles

Geonhee Cho†, Yoonsu Park†, Yun-kun Hong†, and Don-Hyung Ha*
Nano Convergence, 2019.

Research article

Multiaxial and Transparent Strain Sensors Based on Synergetically Reinforced and Orthogonally Cracked Hetero‐Nanocrystal Solids

Lee, W. S., Kim, D., Park, B., Joh, H., Woo, H. K., Hong, Y.‐K., Kim, T.‐i., Ha, D.‐H.*, and Oh, S. J.*
Advanced Functional Materials, 2019.

Research article

Peptide-Programmable Nanoparticle Superstructures with Tailored Electrocatalytic Activity

Eun Sung Kang, Yong-Tae Kim, Young-Seon Ko, Nam Hyeong Kim, Geonhee Cho, Yang Hoon Huh, Ji-Hun Kim, Jiyoung Nam, Trung Thanh Thach, David Youn, Young Dok Kim, Wan Soo Yun, William F. DeGrado, Sung Yeol Kim, Paula T. Hammond, Jaeyoung Lee, Young-Uk Kwon, Don-Hyung Ha*, and Yong Ho Kim*
ACS Nano, 2018.

Research article

Phase transformation of iron phosphide nanoparticles for hydrogen evolution reaction electrocatalysis

Cho, G.; Kim, H.; Park, Y. S.; Hong, Y.-K.; Ha, D.-H.*
International Journal of Hydrogen Energy, 2018.

Research article

Direct fabrication of gas diffusion cathode by pulse electrodeposition for proton exchange membrane water electrolysis

Park, H.; Choe, S.; Kim, H.; Kim, D.-K.; Cho, G.; Park, Y.; Jang, J. H.; Ha, D.-H.*; Ahn, S. H.*; Kim, S.-K.*
Applied Surface Science, 2018.

Research article

Trioctylphosphine-assisted morphology control of ZnO nanoparticles

Hong, Y.-K.; Cho, G.; Park, Y.; Oh, S.; Ha, D.-H.*
Nanotechnology, 2018.

Research article

AgIn dendrite catalysts for electrochemical reduction of CO2 to CO

Park, H.; Choi, J.; Kim, H.; Hwang, E.; Ha, D.-H.; Ahn, S. H.; Kim, S.-K.
Applied Catalysis B: Environmental, 2017.

Research article

Selective Etching of Copper Sulfide Nanoparticles and Heterostructures through Sulfur Abstraction: Phase Transformations and Optical Properties

A. Nelson†, D.-H. Ha†, and R.D. Robinson (†= equally contributed)
Chem. Mater., 2016.

Research article

Activity and Stability of Cobalt Phosphides for Hydrogen Evolution Upon Water Splitting

D.-H. Ha,† M. Risch,† B. Han,† L. Giordano, K.P.C. Yao, and Y. Shao-Horn (†= equally contributed)
Nano Energy, 2016.

Research article

A General Method for High-Performance, Additive-Free Li-Ion Battery Electrodes from Colloidal Nanoparticles: The Case of MnS, Cu2-xS, and Ge

D.-H. Ha,† T. Ly, † J.M. Caron, H. Zhang, K.E. Fritz, and R.D. Robinson (†= equally contributed)
ACS Appl. Mater: Interfaces, 2015.

Research article

Solid-Solid Phase Transformations Induced through Cation Exchange and Strain, in 2D Heterostructured Copper Sulfide Nanocrystals

D.-H. Ha, A.H. Caldwell, M.J. Ward, S. Honrao, K. Mathew, R. Hovden, M.K.A. Koker, D.A. Muller, R.G. Hennig, and R.D. Robinson
Nano Lett., 2014.

Research article

The Oxidation of Cobalt Nanoparticles into Kirkendall-Hollowed CoO and Co3O4: the Diffusion Mechanisms and Atomic Structural Transformations

D.-H. Ha, L.M. Moreau, S. Honrao, R.G. Hennig, and R.D. Robinson
J Phys Chem C, 2013.

- Cover Selection

Research article

Defining Crystalline/Amorphous Phases of Nanoparticles through X-ray Absorption Spectroscopy and X-ray Diffraction: The Case of Nickel Phosphide

L.M. Moreau,† D.-H. Ha,† H. Zhang, R. Hovden, D.A. Muller, and R.D. Robinson (†= equally contributed)
Chem. Mater., 2013.

Research article

Binder-Free and Carbon-Free Nanoparticle Batteries: A Method for Nanoparticle Electrodes without Polymeric Binders or Carbon Black

D.-H. Ha, M.A. Islam and R.D. Robinson
Nano Lett., 2012.

Research article

Unintended Phosphorus Doping of Nickel Nanoparticles during Synthesis with TOP: A Discovery through Structural Analysis

L.M. Moreau,† D.-H. Ha,† C.R. Bealing, H. Zhang, R.G. Hennig and R.D. Robinson (†= equally contributed)
Nano Lett., 2012.

- Highlighted in NSF research (www.reserach.gov)

Research article

The structural evolution and diffusion during the chemical transformation from cobalt to cobalt phosphide nanoparticles

D.-H. Ha, L.M. Moreau, C.R. Bealing, H. Zhang, R.G. Hennig and R.D. Robinson
J. Mater. Chem., 2011.

- Highlighted as a 'hot article' for Journal of Materials Chemistry (http://blogs.rsc.org/jm/)

- Inside cover selection

Research article

Nanomaterial Datasets to Advance Tomography in Scanning Transmission Electron Microscopy

B.D. Levin, E. Padgett, C.C. Chen, M.C. Scott, R. Xu, W. Theis, Y. Jiang, Y. Yang, C. Ophus, H. Zhang, D.-H. Ha, D. Wang, Y. Yu, H.D. Abruña, R.D. Robinson, P. Ercius, L.F. Kourkoutis, J. Miao, D.A. Muller, R. Hovden
Scientific Data, 2016.

Research article

Highly Conductive Cu2-xS Nanoparticle Films through Room Temperature Processing, and an Order of Magnitude Enhancement of Conductivity via Electrophoretic Deposition

O.O. Otelaja, D.-H. Ha, T. Ly, H. Zhang, and R.D. Robinson
ACS Appl. Mater. Interfaces, 2014.

Research article

Analytical modeling of localized surface plasmon resonance in heterostructure copper sulfide nanocrystals

A.H. Caldwell, D.-H.Ha, X. Ding, and R.D. Robinson
J. Chem. Phys., 2014.

Research article

(NH4)2S, A Highly Reactive Molecular Precursor for Low Temperature Anion Exchange Reactions in Nanoparticles

H. Zhang, L.V. Solomon, D.-H. Ha, S. Honrao, R.G. Hennig, and R.D. Robinson
Dalton Trans., 2013.

Research article

Synthesis and Properties of Electrically Conductive, Ductile, Extremely Long (~ 50 μm) Nanosheets of KxCoO2·yH2O

M. Aksit, B.C. Hoselton, H. Kim, D.-H. Ha, R.D. Robinson
ACS Appl. Mater. Interfaces, 2013.

Research article

Controlled Synthesis of Uniform Cobalt Phosphide Hyperbranched Nanocrystals Using Tri-n-octylphosphine Oxide as a Phosphorus Source

H. Zhang, D.-H. Ha, R. Hovden, L.F. Kourkoutis and R.D. Robinson
Nano Lett., 2011.

Research article

Joint Characteristics of YBCO Coated Conductor by Removing a Metallic Stabilizer

K. S. Chang, H. Kim, D. K. Park, T. K. Ko, M. C. Ahn, D.-H. Ha, J.-B. Song, S. J. Lee, H. M. Kim and H. Lee
IEEE Trans. Appl. Supercond., 2008.