P doped NiCoZn LDH growth on nickel foam as an highly efficient bifunctional electrocatalyst for Overall Urea-Water Electrolysis |
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| Authors: | Zhaoxia Yang Yanqing Zhang Chuanqi Feng Huimin Wu Yu Ding He Mei |
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| Affiliation: | 1. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed By the Province and Ministry & Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Key Laboratory of Regional Development and Environmental Response in Hubei Province, Faculty of Resources and Environmental Science, College of Chemistry & Chemical Engineering, Hubei University, Wuhan, 430062, PR China;2. Health Assessment Center, Zhejiang Provincial Key Laboratory of Watershed Science and Health, College of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, PR China;3. College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, 432000, China |
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| Abstract: | Water electrolysis is one of the important methods for hydrogen production, but the oxygen evolution reaction (OER) on the anode has a higher theoretical potential. Using urea oxidation reaction (UOR) instead of OER has been an energy-saving method because it has a lower theoretical potential and also can reduce pollution. In this paper, NiCoZn LDH/NF, P–NiCoZn LDH/NF-X (X is the atom ratio of P) = 10%, 15%, 20%) were synthesized through typically hydrothermal and calcination methods. P–NiCoZn LDH/NF-15% was demonstrated to be abifunctional electrocatalyst towards HER and UOR. When P–NiCoZn LDH/NF-15% is used as the anode and cathode for urea-water electrolysis,it shows that when the current density is 100 mA cm?2, the voltage is 1.479 V for urea-water electrolysis, which is much better than that of IrO2/NF||Pt/C/NF (1.698 V). Thus, P–NiCoZn LDH/NF-15% is expected to replace precious metals for practical applications. |
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| Keywords: | NiCoZn LDH HER UOR Bifunctional electrocatalyst Overall urea-water electrolysis |
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