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journal article·2025-07Open access

Cyanide Functionalization and Oxygen Vacancy Creation in Ni‐Fe Nano Petals Sprinkled with MIL‐88A Derived Metal Oxide Nano Droplets for Bifunctional Alkaline Seawater Electrolysis (Small 30/2025)

Roshan Mangal Bhattarai, Lan Nguyen, Nghia Le, Kisan Chhetri, Debendra Acharya, Sosiawati Teke, Shirjana Saud, Duc Ba Nguyen, Sang Jae Kim, Young Sun Mok

Small· Volume 21· Issue 30
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Source abstract

Abstract

Alkaline Seawater Electrolysis Optimizing Fe/Ni ratios, in article number 2410027, Young Sun Mok and co-workers report synthesis of smaller FeNi LDH derived NiFe2O4 nano petals sparsely covered with nano-sized MIL-88A derived Fe2O3 nanospheres. Thermal ammonia reduction introduced oxygen vacancies and nitrogen functionalization, boosting OER and HER activities by lowering activation barriers and destabilizing hydride intermediates. The optimized electrode achieved 200 mA cm−2 at 350 mV (OER) and 240 mV (HER) overpotentials, with 200-hour stability in alkaline seawater, showcasing its potential for sustainable water electrolysis.
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Research context

Nanomaterials

OpenAlex topics: Water-Energy-Food Nexus Studies · Solar-Powered Water Purification Methods · Hybrid Renewable Energy Systems

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Affiliations

Department of Chemical Engineering Jeju National University Jeju 63243 Republic of Korea

Applied Electrochemistry & Catalysis (ELCAT) University of Antwerp Wilrijk 2610 Belgium

Department of Chemistry Mississippi State University Mississippi MS 39762 USA

Department of Nano Convergence Engineering Jeonbuk National University Jeonju 54896 Republic of Korea

Institute of Theoretical and Applied Research Duy Tan University Hanoi 100000 Vietnam

Institute of Research and Development Duy Tan University Danang 550000 Vietnam

Nanomaterials & System Lab Major of Mechanical System Engineering College of Engineering Jeju National University Jeju 63243 Republic of Korea

References

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