Electrocatalytic activity of biochar-supported ZnCoNi nanocomposite for hydrogen production from water splitting

Year 2025, Volume: 10 Issue: 3, 1073 - 1089, 25.09.2025

Cemal Ertaş , Didem Balun Kayan

https://doi.org/10.58559/ijes.1746988

Abstract

As the global need for clean and renewable energy becomes more pressing, hydrogen (H₂) has emerged as a leading energy carrier due to its high energy density and zero-carbon emissions upon use. Among the various hydrogen production methods, water electrolysis stands out as a green and sustainable approach. However, its widespread application is still hindered by high overpotentials, slow kinetics of the hydrogen evolution reaction (HER), and the reliance on costly noble metal-based catalysts.
This study addresses these limitations by developing cost-effective and efficient electrocatalysts using biochar as a carbon-based support material for the electrodeposition of mono-, bi-, and tri-metallic nanostructures containing zinc (Zn), cobalt (Co) and nickel (Ni). These transition metals were selected due to their favorable electrochemical propertiesstrong redox activity, high electrical conductivity and low cost, which are critical for facilitating HER kinetics. As a result of the electrochemical studies, the Biochar/ZnCoNi nanocomposite exhibited the best electrocatalytic performance, excellent long-term stability, high electrochemically active surface area and high durability. These results demonstrate that the synergistic integration of multimetallic nanostructures with biochar significantly enhances HER performance. By combining low-cost transition metals with sustainable carbon supports, this work provides a promising and scalable strategy for improving hydrogen production efficiency through water electrolysis, contributing meaningfully to the development of clean energy technologies and advancing the current state of HER catalyst research.

Keywords

Hydrogen energy , Electrocatalyst , Biochar , Trimetalic nanocomposite

References

• [1] Le P-A, Trung VD, Nguyen PL, Phung TVB, Natsuki J, Natsuki T. The current status of hydrogen energy: an overview. RSC Adv. 2023;13(47):28262–28287.
• [2] Boukhchina R, El Alimi S. Power to hydrogen: A review of applications, market development, and policy landscape. AIMS Energy. 2025;13(3):696–731.
• [3] Adeli K, Nachtane M, Faik A, Saifaoui D, Boulezhar A. How Green Hydrogen and Ammonia Are Revolutionizing the Future of Energy Production: A Comprehensive Review of the Latest Developments and Future Prospects. Appl Sci. 2023;13(15):8711.
• [4] Zhang Q, Liu Y, Wang J, Chen Y, Zhao H. Hydrogen as an alternative fuel: A comprehensive review of challenges and opportunities in production, storage, and transportation. Int J Hydrogen Energy. 2025;102:1026–1044.
• [5] Liu L, Zhang M, Xu T, Wu J. Advancing the hydrogen production economy: A comprehensive review of technologies, sustainability, and future prospects. Int J Hydrogen Energy. 2024;78:642–661.
• [6] Cui Y, Zhao Y, Han Z, Wang Z, Li W, Zhang Y, et al. Recent progress in Ru electrocatalyst design for acidic oxygen evolution reaction. J Mater Chem A. 2025;13:17214–17241.
• [7] Chen J, Xiao W, Li Q, et al. Bifunctional electrocatalysts for overall and hybrid water splitting. Chem Rev. 2024;124(7):3694–3812.
• [8] Visser ED, Seroka NS, Khotseng L. Recent advances in biochar: Synthesis techniques, properties, applications, and hydrogen production. Processes. 2024;12(6):1111.
• [9] Du Y, Ying Z, Zheng X, Dou B, Cui G. Correlating electrochemical biochar oxidation with electrolytes during biochar-assisted water electrolysis for hydrogen production. Fuel. 2023;339:126957.
• [10] Gu X, Ying Z, Zheng X, Du Y, Sun H, Chen X, et al. Electrochemical activation of biochar and energy saving hydrogen production by regulation of biochar-assisted water electrolysis. Energy Convers Manag. 2024;300:117885.
• [11] Huang Y, Zhou W, Xie L, Meng X, Li J, Gao J, et al. Self-sacrificing and self-supporting biomass carbon anode assisted water electrolysis for low-cost hydrogen production. Proc Natl Acad Sci USA. 2024;121(47):e2316352121.
• [12] Afolabi ATF, Kechagiopoulos PN, Liu Y, Li C-Z. Kinetic features of ethanol steam reforming and decomposition using a biochar-supported Ni catalyst. Fuel Process Technol. 2021;212:106622.
• [13] Che P, Wang Y, Zhang X, Wang H, Liu Z, Liu Q. The bimetal synergistic bifunctional electrocatalysts for hydrogen evolution and oxygen evolution reactions. Ionics. 2021;27(5):2139–2150.
• [14] Qin L, Liu J-L, Zhou X-Y, Yuan R-M, Luo C, Tang Y, Wang Y. Improved electrocatalytic HER performances of Co MOF derivatives by introducing zinc ions. Energy Fuels. 2022;36(9):5843–5851.
• [15] Wang Y, Zhang M, Liu Y, Zheng Z, Liu B, Chen M, Guan G, Yan K. Recent advances on transition-metal-based layered double hydroxides nanosheets for electrocatalytic energy conversion. Adv Sci (Weinh). 2023;10(13):e2207519.
• [16] Das S, Basu S. Transition metal oxides supported on biochar for efficient hydrogen evolution reaction. Electrochem Commun. 2022;138:107258.
• [17] Liu Y, Li Q, Zhang H, Wang J. Ni based catalysts for hydrogen evolution reaction in alkaline media: Strategies for enhanced performance. Appl Catal B Environ. 2022;300:120763.
• [18] Chen W, Sun Y, Liu X. Enhancing hydrogen evolution on nickel phosphide by biochar modification: Effects on activity and stability. J Power Sources. 2023;557:232482.
• [19] Wang S, Yu M, Wang G. Advances in cobalt-based electrocatalysts for hydrogen evolution reaction: Structural engineering and mechanistic insights. Mater Today Energy. 2024;28:101114.
• [20] Kumar P, Singh S. Zinc-based catalysts for water splitting: Advances and challenges. Catal Today. 2023;412:35–49.
• [21] Zhang J, Zhao Z. Transition metal phosphides for electrocatalytic hydrogen evolution: From fundamentals to applications. Chem Soc Rev. 2023;52(15):7347–7383.
• [22] Lee S, Lee J, Park J. Biochar-supported transition metal catalysts for sustainable energy applications. J Clean Prod. 2023;388:135963.
• [23] Saljooghi MK, Saljooghi MK, Garcia-Cruz SM, et al. Binder free Ni–Co alloy deposited on Cu foam by cyclic voltammetry for efficient hydrogen evolution in acidic media. Int J Hydrogen Energy. 2021;46(17):10935–10944.
• [24] Chen X, Zhao X, Wang Y, et al. Layered Ni–Co–P electrode synthesized by CV electrodeposition for hydrogen evolution at large currents. ChemCatChem. 2021;13(16):3619–3627.
• [25] Qadeer MA, Zhang X, Farid MA, Tanveer M, Yan Y, Du S, et al. A review on fundamentals for designing hydrogen evolution electrocatalyst. J Power Sources. 2024;613:234856.
• [26] Gutić SJ, Dobrota AS, Fako E, Skorodumova NV, López N, Pašti IA. Hydrogen evolution reaction-From single crystal to single atom catalysts. Catalysts. 2020;10(3):290.
• [27] Kayan DB, Turunç E. Bio reduced GO/Pd nanocomposite as an efficient and green synthesized catalyst for hydrogen evolution reaction. Int J Energy Res. 2021;45(7):11146–11156.
• [28] Mohammadi T, Hosseini MG, Pastor E, Ashassi Sorkhabi H. One step growth of RuNi MOF nanoarrays on carbon felt host as a high performance binder free electrode for dual application: Ethanol fuel cell and supercapacitor. J Energy Storage. 2024;79:110146.
• [29] Li J, Zhang H, Luo C, Cheng D, Xu W, Lin M. Non-isothermal CO₂ electrolysis enables simultaneous enhanced electrochemical and anti-precipitation performance. Nat Commun. 2025;16:4181.
• [30] Douglass EF Jr, Driscoll PF, Liu D, Burnham NA, Lambert CR, McGimpsey WG. Effect of electrode roughness on the capacitive behavior of self-assembled monolayers. Anal Chem. 2008;80(20):7670–7677.
• [31] Kayan DB, Baran T, Menteş A. Functionalized rGO–Pd nanocomposites as high-performance catalysts for hydrogen generation via water electrolysis. Electrochim Acta. 2022;422:140513.
• [32] Yang K, Liu X, Zhang Z. The role of biochar in electrochemical water splitting: A review. Electrochim Acta. 2022;410:139986.
• [33] Feng J, Pu F, Li Z, Li X, Hu X, Bai J. Interfacial interactions and synergistic effect of CoNi nanocrystals and nitrogen-doped graphene in a composite microwave absorber. Carbon. 2016;104:214–225.