Related Experiment Video
Updated: May 28, 2026

Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination
Published on: March 1, 2020
Lattice Oxygen-Modulated High-Entropy Layered Double Hydroxides for Energy-Efficient and Chloride-Resilient
Jyoti Prakash Das1, Yeongjun Yoon2, Vempuluru Navakoteswara Rao1,3
1Nanomaterials & System Laboratory, Major of Mechatronics Engineering, Faculty of Applied Energy System, Jeju National University, Jeju 63243, South Korea.
None:
Seawater electrolysis offers a promising route for sustainable hydrogen production, but practical implementation remains challenging due to competitive chlorine evolution and catalyst degradation under highly corrosive conditions. Herein, a nonnoble metal-based high-entropy layered double hydroxide (HE-LDH) composed of Ni, Co, Fe, Cr, and Bi is prepared as a bifunctional electrocatalyst. Benefiting from the abundant active sites, tuned electronic structure, and multielemental synergistic effect, the electrocatalyst exhibits an overpotential of 266 mV and 160 mV for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) at 10 mA cm-2, respectively, in alkaline seawater. Further, the assembled anion exchange membrane (AEM) electrolyzer delivers a current density of 1.12 A cm-2 at 2.2 V and maintains stable operation for 700 h at 500 mA cm-2. The experimental and theoretical studies indicate the entropy-induced enhanced electrochemical kinetics and anticorrosion properties for efficient and durable seawater electrolysis.
Related Concept Videos
Electrolysis
Trends in Lattice Energy: Ion Size and Charge
The Debye–Hückel Theory of Electrolyte Solutions
The Born-Haber Cycle
The Electrical Double Layer
Types of Reversible Electrodes

