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Efficient iron-cobalt layered double-hydroxide coupled nickel-molybdenum hydroxide hydrogen evolution electrode and preparation method thereof

A hydroxide and hydrogen evolution electrode technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of difficult preparation of hydrogen evolution electrodes, high energy consumption, poor stability, etc., to improve catalytic hydrogen evolution activity, increase specific surface area, and stabilize good effect

Active Publication Date: 2021-02-09
天津市大陆制氢设备有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] In order to solve the defects in the above-mentioned technologies, the present invention provides a high-efficiency iron-cobalt layered double metal hydroxide coupled nickel-molybdenum hydroxide hydrogen evolution electrode and its preparation method , to solve the problems of difficult preparation of hydrogen evolution electrodes, high energy consumption and poor stability in the prior art

Method used

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  • Efficient iron-cobalt layered double-hydroxide coupled nickel-molybdenum hydroxide hydrogen evolution electrode and preparation method thereof
  • Efficient iron-cobalt layered double-hydroxide coupled nickel-molybdenum hydroxide hydrogen evolution electrode and preparation method thereof
  • Efficient iron-cobalt layered double-hydroxide coupled nickel-molybdenum hydroxide hydrogen evolution electrode and preparation method thereof

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Embodiment 1

[0033] (1) Pretreatment of conductive substrate

[0034] Select a nickel foam that has been cut to a size of 2.5cm×3cm. Soak it completely with 100mL of acetone, and oscillate ultrasonically for 30 minutes to remove the residual engine oil during surface processing of nickel foam. The soaked nickel foam was rinsed repeatedly with deionized water, then placed in the prepared 150mL, 3mol / L HCl, and ultrasonically oscillated for 10min to remove the oxide layer on the surface of the nickel foam. Finally, the nickel foam was taken out of the solution and washed repeatedly with absolute ethanol and deionized water until the pH=7, and then stored in absolute ethanol to prevent its secondary oxidation and reserved for subsequent use.

[0035] (2) Preparation of catalytic layer formed by stacking nanosheet nickel molybdenum hydroxide

[0036] Using the chloride ion corrosion method, configure a solution composed of 0.5mol / L sodium chloride, 5mmol / L nickel chloride hexahydrate and 5mm...

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Abstract

The invention discloses an efficient iron-cobalt layered double-hydroxide coupled nickel-molybdenum hydroxide hydrogen evolution electrode and a preparation method thereof. The preparation method comprises the steps that: a conductive substrate is pretreated; a nickel-molybdenum hydroxide grows on the pretreated conductive substrate through a chloride ion corrosion method; and a FeCoLDH layer grows in situ through hydrothermal synthesis. The electrode is of a nano structure, can provide larger reaction active sites and smaller electron transfer resistance; the formed electrode material has excellent hydrogen evolution performance and keeps stable within the electrolysis time of more than 10 hours. The method is simple to operate and low in production cost. The hydrogen evolution catalyticactive electrode prepared by the method can be widely applied to the alkaline water electrolysis industry.

Description

technical field [0001] The invention relates to the field of hydrogen production, in particular to a low-energy-consumption iron-cobalt layered double metal hydroxide coupled nickel-molybdenum hydroxide hydrogen evolution electrode and a preparation method thereof. Background technique [0002] The modern life of human society is inseparable from the stable supply of energy. Energy is the foundation of the continuous development of the modern economy and an important strategic material for the sustainable development of society. The consumption of traditional fossil fuels and the aggravation of environmental pollution make us urgently need to find a new renewable energy to replace the status of traditional fossil energy. Currently, the mainstream alternative energy sources being studied include hydropower resources, nuclear energy, wind energy, biomass energy, solar energy, hydrogen energy, shale gas, ocean energy, etc. Among the many new energy sources, hydrogen energy is ...

Claims

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Application Information

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IPC IPC(8): C25B11/052C25B11/031C25B11/061C25B11/091C25B1/04
CPCC25B1/04Y02E60/36
Inventor 许卫许莉易言
Owner 天津市大陆制氢设备有限公司
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