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Boosting the oxygen evolution electrocatalysis of layered nickel hydroxidenitrate nanosheets by iron doping
Affiliation:1. Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China;2. WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, Western Australia 6102, Australia;1. College of Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030 PR China;2. Department of Chemistry, College of Science, Northeast Forestry University, Harbin 150040, PR China;1. Department of Mathematics, Karnatak University, Pavate Nagar, Dharwad, 580003, India;2. Department of Computer Science (MCA), KLE Technological University, BVB Campus, Hubli, 580031, India;1. School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Henan, Xinxiang 453007, PR China;2. School of Environment, Henan Normal University, Henan, Xinxiang 453007, PR China;1. School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;2. Mechanical System Division, Synchrotron Light Research Institute (Public Organization), Nakhon Ratchasima 30000, Thailand;3. Center of Excellent on Advanced Functional Materials (CoE-AFM), Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;4. Research Network NANOTEC-SUT on Advanced Nanomaterials and Characterization, School of Chemistry, Suranaree University, Nakhon Ratchasima 30000, Thailand;1. Department of Mathematics, Quaid-i-Azam University, Islamabad 44000, Pakistan;2. Department of Mathematics, Shaheed Benazir Bhutto University, Sheringal Dir Upper 18000, Pakistan
Abstract:Development of earth-abundant electrocatalysts with high activities and strong duribilities for oxygen evolution reaction (OER) has received the increased interests for various sustainable energy storage and conversion systems. Herein, we report a novel non-noble-metal electrocatalyst based on layered nickel hydroxidenitrate Ni3(NO3)2(OH)4] nanosheets and demonstrate that iron doping strategy greatly boosts their OER performances.. The spectroscopic investigation and cyclic voltammetry analysis confirm the favorable electronic interaction between nickel and iron in Ni3-xFex(NO3)2(OH)4. The optimal Ni2·85Fe0·15(NO3)2(OH)4 catalyst exhibits the earlier onset potential and smaller overpotential at 10 mA cm?2 compared with those of the state-of-the-art IrO2 in 1.0 M KOH solution.
Keywords:Oxygen evolution  Doping  Electronic modulation  Nanosheet  Electrocatalysis
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