Abstract
Efficient and low-cost materials to generate electrical energy from small organic materials are highly demanded for a large-scale commercialization of direct urea fuel cells. The purpose of this work is to improve the electrochemical performance of nickel phosphide (Ni) through palladium (Pd) doping via the facile solvothermal method and dispersing the obtained palladium nickel phosphide (PdNiP) on poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate)/reduced graphene oxide (PEDOT:PSS/rGO) support material via a simple ultrasonic process. The electrochemical activities of Pd doped NiP and PdNiP@PEDOT:PSS/rGO electrodes toward urea electrooxidation were tested using cyclic voltammetry (CV). The CV test reveals the significant efficiency improvement in nickel phosphide (NiP) upon Pd doping, and further improvement was achieved when obtained PdNiP dispersed on PEDOT:PSS/rGO toward alkaline urea oxidation. Since PdNiP@PEDOT:PSS/rGO remarkably outperformed NiP and PdNiP, it is a promising novel material for alkaline urea oxidation in a direct urea fuel cell.
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Acknowledgements
I would like to acknowledge Ministry of science and higher education, Ethiopia for financial support and the support from members of Professor Praveen Ramamurthy’ Laboratory is highly appreciated. I would like to Acknowlege the support from Jimma Institute of Technology, Jimma University. Furthermore, acknowledgement to the office of International Relations (OIR) Indian Institute of Science for the Short-term International visiting student awarded to me.
Funding
This work was supported by the Ministry of Science and Higher Education, Ethiopia, and IoE grant R(VI)090/23/2019–20 356 (Indian Institute of Science, India).
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Lera, I.L., Khasnabis, S., Wangatia, L.M. et al. An innovative catalyst of PdNiP nanosphere deposited PEDOT:PSS/rGO hybrid material as an efficient electrocatalyst for alkaline urea oxidation. Polym. Bull. 80, 1265–1283 (2023). https://doi.org/10.1007/s00289-022-04100-w
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DOI: https://doi.org/10.1007/s00289-022-04100-w