Ni-Modified Cu–Fe Prussian Blue Analogues as electrochemical catalysts for hydrogen production
DOI:
https://doi.org/10.62239/jca.2026.054Keywords:
Prussian Blue, Cu2[Fe(CN)6], Electrocatalysis, Hydrogen Evolution ReactionAbstract
The development of novel catalysts for hydrogen evolution reaction (HER) is crucial in clean energy production technology. In this study, Cu2[Fe(CN)6] (CuFe PB), a Prussian blue analogue (PBA) and Ni-modified CuFe PB (Ni-CuFe PB) were synthesized by co-precipitation. The structural, compositional, and morphological characteristics of the materials were investigated using XRD, FT-IR, SEM, and EDS techniques. The results showed that the Ni-modified materials possess a network without altering the characteristic crystal structure of Prussian blue. The Ni modification also created more active centers, favorable for electrochemical processes. The HER catalytic activity was evaluated in a 0.5 M H2SO4 electrolyte. Compared to the CuFe PB sample, the optimized Ni-CuFe PB material exhibited better electrocatalytic activity, with the overpotential at a current density of 10 mA.cm-2 decreasing by approximately 100 mV. These results demonstrate that transition metal modification is an effective approach to improving the catalytic performance of PBAs materials in electrochemical hydrogen production applications.
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Copyright (c) 2026 Nguyen Ho Duy, Nguyen Nhat Tuan, Phan Thị Thuy Trang, Truong Cong Duc, Dinh Quoc Viet, Le Thi Thanh Lieu, Nguyen Phi Hung, Vo Vien, Nguyen Van Thang
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National Foundation for Science and Technology Development
Grant numbers 104.05–2024.09
