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Needle-shaped Se-doped Ni3S2 and preparation method thereof

A needle-shaped and nano-needle technology, applied in the field of needle-shaped Se-doped Ni3S2 and its preparation, can solve the problems of high overpotential and Tafel slope, less active site loading, and mediocre morphology

Active Publication Date: 2021-06-25
TAIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Ni 3 S 2 There are also problems of mediocre morphology, low active site load, high overpotential and Tafel slope, and its hydrogen evolution catalytic activity needs to be further improved to meet the requirements of industrial production.

Method used

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  • Needle-shaped Se-doped Ni3S2 and preparation method thereof
  • Needle-shaped Se-doped Ni3S2 and preparation method thereof
  • Needle-shaped Se-doped Ni3S2 and preparation method thereof

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Embodiment Construction

[0015] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0016] The specific steps of the present embodiment are as follows: cut out a piece of foamed nickel whose size is 1.5 by 0.5 square centimeters; immerse the cut foamed nickel in 12 moles per liter of concentrated hydrochloric acid for ultrasonic cleaning for ten minutes, then immerse in acetone for five minutes, Then immerse in ethanol and ultrasonically clean for five minutes; put the foamed nickel after cleaning into a vacuum drying oven and dry for 30 minutes at a temperature of 40 degrees Celsius; weigh 0.5 mmol of selenium powder, 3 mmol of NaBH 4 , put 20 ml of deionized water into a beaker, and use a temperature-controllable magnetic stirrer to control the temperature at 50 degrees Celsius and stir until the selenium powder is dissolved; add 4 mmol of CH to the beaker 4 N 2 S, 0.5 millimoles of urea and 0.1 grams of PVP, add 20 milliliters o...

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Abstract

The invention discloses Se-doped Ni3S2, which has a needle-like morphology, the length of a nanoneedle is 200 to 800 nanometers, and the Se-doped Ni3S2 has excellent electro-catalytic hydrogen evolution performance. The invention further discloses a method for preparing the Se-doped Ni3S2. The method comprises the steps of foamed nickel interception, cleaning and drying, Se powder treatment, hydrothermal reaction and the like.

Description

technical field [0001] The invention relates to an electrocatalyst, in particular to a needle-shaped Se-doped Ni 3 S 2 and its preparation method. [0002] technical background [0003] With the environmental pollution and the depletion of energy resources, the development and utilization of green and sustainable energy has become the focus of the world. Hydrogen energy has a high combustion value, the combustion products are non-polluting, and can be obtained through simple water decomposition. It is one of the green and sustainable energy sources under development. Electrocatalytic water splitting is one of the rational technical routes for hydrogen production, which has the advantages of high efficiency, no pollution, and no weather and time constraints. Electrocatalytic water splitting can be divided into two half-reactions, hydrogen evolution reaction and oxygen evolution reaction. Because there is a certain overpotential in the hydrogen evolution and oxygen evolutio...

Claims

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Application Information

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IPC IPC(8): C25B11/091C25B1/04B82Y30/00B82Y40/00
CPCC25B1/04B82Y30/00B82Y40/00Y02E60/36
Inventor 林志萍申士杰王宗鹏钟文武张欢欢陈基根
Owner TAIZHOU UNIV
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