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Efficient nickel phosphide water electrolysis and hydrogen evolution catalytic electrode under neutral condition, and preparation method thereof

A neutral condition, catalytic electrode technology, applied in chemical instruments and methods, physical/chemical process catalysts, electrodes, etc., can solve problems such as difficulty in hydrogen evolution, and achieve the effect of improving catalytic hydrogen evolution performance, simple equipment, and convenient operation.

Pending Publication Date: 2020-06-26
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Another current situation about hydrogen production by electrolysis of water is that the existing research is still more catalytic hydrogen production under acidic and alkaline conditions, while hydrogen evolution is more difficult under neutral conditions

Method used

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  • Efficient nickel phosphide water electrolysis and hydrogen evolution catalytic electrode under neutral condition, and preparation method thereof
  • Efficient nickel phosphide water electrolysis and hydrogen evolution catalytic electrode under neutral condition, and preparation method thereof
  • Efficient nickel phosphide water electrolysis and hydrogen evolution catalytic electrode under neutral condition, and preparation method thereof

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Embodiment 1

[0031] (1) First, cut the purchased commercial nickel foam into a shape of 3.5cm*1cm, and clean it with dilute hydrochloric acid, then perform ultrasonic cleaning with ethanol for 10-15 minutes, ultrasonic cleaning with acetone for 10-15 minutes, and then deionize Ultrasonic cleaning with water for 2-3 times, each time for 10-15 minutes, and then drying in an oven at 30-40°C. figure 1 Shown in (a).

[0032] (2) Electrolyte with the following concentrations: 0.1-0.6mol / L sodium hypophosphite, 0.1-0.6mol / L nickel sulfate, 0.05-0.1mol / L sodium borate and 0.05-0.1mol / L sodium fluoride, 0.001 -0.1mol / L ferrous chloride, 0.001-0.1mol / L cobalt chloride. A three-electrode system is adopted, porous nickel foam is used as the working electrode, a 2cm×2cm×0.2cm foil is used as the counter electrode, and a saturated calomel electrode is used as the reference electrode, and the CHI electrochemical workstation is used in the range of -0.3V to -1.5V Carry out 200 cycles of CV scanning at a...

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Abstract

The invention provides an efficient nickel phosphide water electrolysis and hydrogen evolution catalytic electrode under a neutral condition, and a preparation method thereof. According to the electrode, foamed nickel is used as a substrate, a mixed solution of sodium hypophosphite, nickel sulfate, sodium borate, sodium fluoride, ferrous chloride salt and cobalt chloride is used as an electrolyticsolution, a platinum sheet is used as a counter electrode, an extremely small amount of a precious metal Pt is loaded on the surface of a catalyst through an electro-deposition method, the nickel salt in the electrolytic solution provides a nickel source needed by deposition, the sodium hypophosphite provides a phosphorus source, the platinum sheet naturally provides a platinum source in an anodeprocess, the porous foamed nickel serves as a carrier to facilitate the deposition of nickel phosphide, and in the process, the extremely small amount of the platinum from the platinum sheet is deposited on the porous foamed nickel; and an additive component provides a target element source for various doping, and plays a role in preparing hydrogen through synergistic catalysis. The prepared catalytic electrode has good water electrolysis and hydrogen evolution performance.

Description

technical field [0001] The invention belongs to the technical field of clean energy, in particular to the technical field of hydrogen production by electrolysis of water, and relates to a high-efficiency nickel phosphide electrolysis hydrogen evolution catalytic electrode under neutral conditions and a preparation method thereof. Background technique [0002] Energy and the environment are two major issues in today's world, and it is imperative to build a safe and green energy system. Hydrogen energy has attracted much attention for its non-polluting and clean characteristics. There are many methods for preparing hydrogen, among which hydrogen production by electrolysis of water has become a research hotspot because of its simple process, clean and non-polluting. For the electrolysis of water to produce hydrogen, the most critical thing at present is how to design and prepare more efficient catalytic materials to further reduce the overpotential and energy consumption. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/03C25B11/04C25D3/56C25D7/00B01J27/185C25B1/04
CPCC25B1/04C25D3/562C25D7/00B01J27/1853B01J27/1856C25B11/031C25B11/091B01J35/33Y02E60/36
Inventor 王云龙李科良王淼杨帆陈旭孙善善王琳琳李直澄尹小丹冯仁超
Owner JIANGSU UNIV
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