@article{ART003348602},
author={Hyun Min Park and Jae Gyun Baek and Ryu, Jeong-ho},
title={Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction},
journal={Journal of the Korean Crystal Growth and Crystal Technology},
issn={1225-1429},
year={2026},
volume={36},
number={2},
pages={91-100},
doi={10.6111/JKCGCT.2026.36.2.091}
TY - JOUR
AU - Hyun Min Park
AU - Jae Gyun Baek
AU - Ryu, Jeong-ho
TI - Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction
JO - Journal of the Korean Crystal Growth and Crystal Technology
PY - 2026
VL - 36
IS - 2
PB - The Korea Association Of Crystal Growth, Inc.
SP - 91
EP - 100
SN - 1225-1429
AB - Hydrogen production through water electrolysis is a promising approach for achieving carbon neutrality, but the sluggish kinetics of the oxygen evolution reaction (OER) at the anode remains a critical bottleneck limiting overall system efficiency. NiFe layered double hydroxides (NiFe-LDHs), composed of brucite-like metal hydroxide layers with intercalated anions, have emerged as one of the most active non-precious-metal catalysts for alkaline OER. In this review, we provide a comprehensive overview of the crystal structure, growth mechanism, and structure-activity relationships of NiFe-LDHs for the oxygen evolution reaction. The fundamental OER mechanism, including the adsorption evolution mechanism and lattice oxygen mechanism, is first introduced. The layered crystal structure of LDHs, characterized by edge-sharing metal hydroxide octahedra and interlayer anion intercalation, is then described in detail. The crystal growth mechanism of NiFe- LDH, involving metal ion hydrolysis, nucleation, and preferential two-dimensional sheet growth, is discussed with emphasis on the roles of synthesis parameters. The correlation between the structural characteristics of NiFe-LDH and OER activity is examined, highlighting the critical role of Fe incorporation in modifying the electronic structure and forming active NiOOH phases under operating conditions. Finally, various synthesis strategies — including co-precipitation, hydrothermal synthesis, electrodeposition, and exfoliation — are systematically compared in terms of their effects on nanosheet thickness, crystallinity, surface area, and electrocatalytic performance. This review aims to provide fundamental insights into the structural design of NiFe-LDH-based catalysts for high-performance oxygen evolution electrocatalysis.
KW - Oxygen evolution reaction; NiFe layered double hydroxide; Crystal structure; Growth mechanism; Water electrolysis
DO - 10.6111/JKCGCT.2026.36.2.091
ER -
Hyun Min Park, Jae Gyun Baek and Ryu, Jeong-ho. (2026). Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction. Journal of the Korean Crystal Growth and Crystal Technology, 36(2), 91-100.
Hyun Min Park, Jae Gyun Baek and Ryu, Jeong-ho. 2026, "Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction", Journal of the Korean Crystal Growth and Crystal Technology, vol.36, no.2 pp.91-100. Available from: doi:10.6111/JKCGCT.2026.36.2.091
Hyun Min Park, Jae Gyun Baek, Ryu, Jeong-ho "Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction" Journal of the Korean Crystal Growth and Crystal Technology 36.2 pp.91-100 (2026) : 91.
Hyun Min Park, Jae Gyun Baek, Ryu, Jeong-ho. Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction. 2026; 36(2), 91-100. Available from: doi:10.6111/JKCGCT.2026.36.2.091
Hyun Min Park, Jae Gyun Baek and Ryu, Jeong-ho. "Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction" Journal of the Korean Crystal Growth and Crystal Technology 36, no.2 (2026) : 91-100.doi: 10.6111/JKCGCT.2026.36.2.091
Hyun Min Park; Jae Gyun Baek; Ryu, Jeong-ho. Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction. Journal of the Korean Crystal Growth and Crystal Technology, 36(2), 91-100. doi: 10.6111/JKCGCT.2026.36.2.091
Hyun Min Park; Jae Gyun Baek; Ryu, Jeong-ho. Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction. Journal of the Korean Crystal Growth and Crystal Technology. 2026; 36(2) 91-100. doi: 10.6111/JKCGCT.2026.36.2.091
Hyun Min Park, Jae Gyun Baek, Ryu, Jeong-ho. Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction. 2026; 36(2), 91-100. Available from: doi:10.6111/JKCGCT.2026.36.2.091
Hyun Min Park, Jae Gyun Baek and Ryu, Jeong-ho. "Crystal structure and growth mechanism of NiFe layered double hydroxides for the oxygen evolution reaction" Journal of the Korean Crystal Growth and Crystal Technology 36, no.2 (2026) : 91-100.doi: 10.6111/JKCGCT.2026.36.2.091
