Preparation And Electrochemical Properties Of Nickel-based Self-supporting Electrode Materials

With the social development and people increasing demand for energy,forcing fossil fuel development and utilization of the irrational problems-caused by air pollution and global warming.Therefore the development of to clean no pollution for the environment,renewable energy to replace fossil fuels has become the most urgent thing.But a variety of alternative energy strategy,The increasing global energy demands and phenomenon of environmental pollution cause clean alternative energy source to be paid more and more attention.Hydrogen is a clean and promising fuel that replacing fossil fuels in the future.Among the hydrogen evolution methods,electrochemical water splitting is the most efficient and sustainable technology to produce high-purity hydrogen.For the electrolysis of water,electrocatalysts play important role in lowering the dynamic overpotential of the hydrogen evolution reaction(HER).Pt-based catalysts are the well-known excellent electrocatalyst exhibit excellent for the HER with nearly zero overpotential.However,high cost and scarcity limit its widespread applications.Therefore,it is urgent to seek low-cost electrocatalysts for practical application hydrogen as the main source of energy the carrier has become a clean energy future.The development of green low-carbon,energy conversion technology is efficient to solve the energy crisis and environmental pollution.So this paper uses cheap carbon paper,nickel net as the current collector of the self support and transition metal as the research object.To achieve an efficient electrochemical respectively.The main contents of this paper are as follows:hydrogen evolution,oxygen evolution and water solution:1)we as precursor CP/NiO flake by after hydrothermal step tin composite,CP/NiSe/Ni0.8Se synthesis phase,after obtaining a tin had larger surface area of rough surface,greatly increase the contact area of the catalyst,exposure of more active sites,thus enabling force of high activity catalyst.2)with good electrical conductivity of carbon paper as a collector in self supported on the carbon paper growth nickel hydroxide nano CP/Ni(OH)2 by anion exchange within CP/Ni(OH)2 nano film surface in situ growth of metal sulfide nanoparticles with small size CP/Ni(OH)2/NiS to build a metal sulfide-hydroxide composite heterostructure films.After using cold vapor method for phosphorus phosphating CP/Ni2P/NiS nanocomposites,the cathode material Ni2P/NiS/CP nanocomposite material for electrochemical HER?3)through the surface treatment of nano NiCo-LDH precursor,strong reducing agent by using NaBH4 and Se powder to form NaHSe4,thus forming a thin film deposited on the surface of nanoparticles,the formation of NiCo-Se composites,the electro catalytic performance test the whole overfull of wate.