Nitrogen-doped nickel metaphosphate nano-particle as well as preparation method thereof and application thereof

Abstract

The invention discloses a nitrogen-doped nickel metaphosphate nano-particle and a preparation method thereof, and belongs to the technical field of catalyst preparation. The nitrogen-doped nickel metaphosphate (N-Ni2P4O12) nano-particle has a multi-stage nano structure, and the surface of the nano-particle which is in 100 nm grid shaped interconnection is distributed with a plurality of 5-10 nm nano crystals, and doping amount of nitrogen is 4%-8%. An electrode of the loaded nitrogen-doped nickel metaphosphate nano-particle shows very good catalytic activity in oxygen evolution reaction, and the electrode of the loaded nitrogen-loaded Ni2O4O12 nano-particle can drive current density of 30 mA cm<2> by only needing 280 mV during oxygen evolution reaction according to an electrochemical polarization curve, and also has very good catalytic stability.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a nitrogen-doped nickel metaphosphate nanoparticle material, a preparation method thereof, and an application in electrocatalytic oxygen evolution reaction. Background technique [0002] The shortage of resources and environmental pollution caused by the continuous consumption of fossil energy are becoming more and more serious. Under the guidance of the concept of sustainable development, all countries in the world regard the development of new energy represented by hydrogen energy as the main direction of research. Thanks to the advancement of science and technology, clean energy such as solar energy and wind energy are widely used in power generation, making the cost of water electrolysis hydrogen production technology that can achieve "zero pollution" in the hydrogen production process continue to decrease. However, the hydrogen evolution and oxygen e...

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Problems solved by technology

The preparation of the above materials all adopts hydrothermal method, although the process is simple, it is not suitable for large-scale production of materials

In addition, the catalytic materials prepared above are all in the form of powder, which needs to be coated with a binder on the conductive substrate to form electrodes in the later stage, which increases the time cost and process complexity.

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