Surface Reconstruction of Ni–Fe Layered Double Hydroxide Inducing Chloride Ion Blocking Materials for Outstanding Overall Seawater Splitting

• DOI: 10.1002/adfm.202214069
• Publication Date: 2023-03-14T12:14:41Z
• Authors: Enkhbayar Enkhtuv...; Sunghwan Yeo; Hyojeong Choi; Kang Min Kim; Byeong‐Seon An; Swarup Biswas; Yongju Lee; Arpan Kumar Nayak; Jin Uk Jang; Kyeong‐Han Na; Won‐Youl Choi; Ghulam Ali; Keun Hwa Chae; Muhammad Akbar; Kyung Yoon Chung; Kyoungmin Yoo; Yong‐Chae Chung; Tae Ho Shin; Hyeok Kim; Chan‐Yeup Chung; HyukSu Han
• Keywords: Electrolysis of water

Abstract Generation of hydrogen fuel via electrochemical water splitting powered by sustainable energy, such as wind or solar is an attractive path toward the future renewable energy landscape. However, current electrolysis requires desalinated resources, eventually leading to costs and scarcity. The development cost‐effective electrocatalysts capable saline feeds directly can be evident solution. Herein, a surface reconstructed nickel‐iron layered double hydroxide (NF‐LDH) reported exceptionally active durable bifunctional electrocatalyst for without chloride corrosion. NF‐LDH consists Ni 3 Fe alloy phase interconnected in 2D network which ultrathin (≈2 nm) low‐crystalline NiFe (oxy)hydroxide are formed on surface. draws large anodic densities, satisfying level practical application, while simultaneously responsible high catalytic activity cathodic reactions superior corrosion resistance. electrode easily fabricated area (up 25 cm 2 ) successfully produce fuels from laboratory‐made low‐intensity photovoltaic cell.