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Study of engineering electronic structure modulated non-noble metal oxides for scaled-up alkaline blend seawater splitting

引用

Journal of Energy Chemistry 2023年第11期86卷 167-179,I0004页

作者： Natarajan Logeshwaran Subramanian Vijayapradeep Ae Rhan Kim Prabhakaran Sampath Shanmugam Ramakrishnan Milan Babu Poudel Do Hwan Kim Dong Jin Yoo Graduate School Department of Energy Storage/Conversion Engineering(BK21 FOUR)Hydrogen and Fuel Cell Research CenterJeonbuk National University567-Baekje-daeroDeokjin-guJeonju-siJeollabuk-do 54896Republic of Korea Department of Life Science Jeonbuk National University567-Baekje-daeroDeokjin-guJeonju-siJeollabuk-do 54896Republic of Korea Division of Science Education and Institute of Fusion Science Jeonbuk National University567-Baekje-daeroDeokjin-guJeonju-siJeollabuk-do 54896Republic of Korea Department of Nano Convergence Engineering Jeonbuk National University567-Baekje-daeroDeokjin-guJeonju-siJeollabuk-do 54896Republic of Korea School of Engineering Merz CourtNewcastle UniversityNE17RUUnited Kingdom

Scaled-up industrial water electrolysis equipment that can be used with abundant seawater is key for affordable hydrogen *** search for highly stable,dynamic,and economical electrocatalysts could have a significant impact on hydrogen ***,we prepared energy-efficient,scalable,and engineering electronic structure modulated mn-ni bimetal oxides(mn_(0.25)ni_(0.75)O)through simple hydrothermal followed by calcination ***-optimized mn_(0.25)ni_(0.75)O displayed enhanced oxygen and hydrogen evolution reaction(OER and HER)performance with overpotentials of 266 and115 mV at current densities of 10 mA cm^(-2)in alkaline KOH added seawater electrolyte ***,mn-ni oxide catalytic benefits were attributed to the calculated electronic configurations and Gibbs free energy for OER,and HER values were estimated using first principles *** real-time practical application,we mimicked industrial operating conditions with modified seawater electrolysis using mn_(0.25)ni_(0.75)O‖mn_(0.25)ni_(0.75)O under various temperature conditions,which performs superior to the commercial IrO_(2)‖Pt-C *** findings demonstrate an inexpensive and facile technique for feasible large-scale hydrogen production.

关键词： Waterel ectrolysis mn-ni oxide complex Chlorine evolution reaction Industrial seawater operations Density functional theory calculations

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