nis 2 -mos 2 /pveib/ppy/go material and her electrocatalytic modified electrode based on it

A 1.nis2-mos2, modified electrode technology, used in electrodes, electrolysis components, electrolysis processes, etc., can solve the problems of high platinum value and limited commercial application fields, and achieve low price, excellent activity, and good stability. Effect

Active Publication Date: 2021-04-09
沈阳宏坤电气设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The precious metal platinum is currently a commonly used commercial electrocatalyst, but its commercial application is limited due to the high value of platinum.

Method used

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  • nis <sub>2</sub> -mos <sub>2</sub> /pveib/ppy/go material and her electrocatalytic modified electrode based on it
  • nis <sub>2</sub> -mos <sub>2</sub> /pveib/ppy/go material and her electrocatalytic modified electrode based on it
  • nis <sub>2</sub> -mos <sub>2</sub> /pveib/ppy/go material and her electrocatalytic modified electrode based on it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 NiS 2 -MoS 2 / PVEIB / PPy / GO nanomaterials (1) The preparation method is as follows:

[0037] 1) Preparation of GO nanosheets: Add 67.5mL of concentrated sulfuric acid, 2.0g of high-purity graphite and 1.6g of NaNO into a three-neck flask 3 , and stir evenly, keep the system temperature below 5°C, slowly and continuously add 9gKMnO to the mixed solution within one hour 4 , and then placed in a 36°C water bath for 0.5h. After standing at room temperature for two weeks, dilute with 560mL 60℃ water, add H 2 o 2 Until the solution turns bright yellow, centrifuge (rmp=10000) while it is hot, wash to neutrality, and vacuum-dry at 50° C. to obtain GO nanosheets.

[0038] 2) PPy / GO nanosheets: Add 0.2g GO nanosheets to 100mL deionized water for ultrasonic dispersion, then add 0.2g pyrrole (Py), add 0.6g FeCl after ultrasonic dispersion 3 ·6H 2 O, continue to sonicate for 0.5h, centrifuge, wash and dry in vacuum to obtain PPy / GO nanosheets.

[0039] 3)PPy / GO-CH ...

Embodiment 2

[0046] Example 2 Based on NiS 2 -MoS 2 / PVEIB / PPy / GO nanomaterials modified electrode for HER electrocatalysis

[0047] (1) The preparation method is as follows:

[0048] 1) get the dry NiS prepared by 2mg embodiment 1 2 -MoS 2 / PVEIB / PPy / GO nanomaterials, add 1mL of ethanol, ultrasonically disperse for 20min, and obtain a black suspension with a concentration of 2mg / mL, which is the composite modifier, and set aside.

[0049] 2) Electrode treatment: the glassy carbon electrode was first polished with 0.3 μM aluminum oxide suspension on a polishing cloth, then ultrasonically cleaned with deionized water, and then 0.05 μM aluminum oxide suspension Polish it to a mirror surface on a polishing cloth, and finally clean it ultrasonically with ethanol and deionized water, dry it with high-purity argon, and set it aside.

[0050] 3) Preparation of modified electrode: Use a micro sampler to pipette 5 μL of the composite modifier prepared in step 1) and apply it onto the surface o...

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Abstract

The present invention relates to NiS 2 ‑MoS 2 / PVEIB / PPy / GO material and HER electrocatalytic modified electrode based on it. Including loading nickel disulfide and molybdenum disulfide on poly-1-vinyl-3-ethylimidazolium bromide / polypyrrole / graphene oxide to prepare NiS 2 ‑MoS 2 / PVEIB / PPy / GO. Will NiS 2 ‑MoS 2 / PVEIB / PPy / GO attached to glassy carbon electrode to prepare NiS 2 ‑MoS 2 / PVEIB / PPy / GO modified electrodes. Under acidic conditions, NiS 2 ‑MoS 2 As the active center, the PVEIB / PPy / GO-based composite nanomaterial can promote the electron transport of HER, thus increasing the reaction rate of water splitting and showing a lower overpotential, making this nanomaterial modified electrode in water splitting Hydrogen production showed high electrochemical activity and good stability.

Description

technical field [0001] The invention belongs to the field of new energy and electrochemical catalysis, and in particular relates to a hydroelectric catalysis modified electrode and its preparation method and application. Background technique [0002] With the increasing consumption of fossil fuels such as coal, oil and natural gas, clean energy that can replace fossil energy has attracted more and more attention. Based on the high specific energy content and carbon-neutral combustion products of hydrogen, it has long been considered as an alternative fuel to replace fossil fuels and meet global energy consumption. Two half-reactions for environmentally friendly hydrogen production powered by renewable energy have been widely explored. [0003] At present, people hope that the excess electricity produced by intermittent energy sources such as water energy, solar energy, wind energy, and tidal energy can be used to electrolyze water to produce hydrogen. challenge. The noble...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/095C25B1/04
CPCC25B1/04C25B11/051C25B11/091Y02E60/36
Inventor 茆卉郭玺傅源琳宋溪明
Owner 沈阳宏坤电气设备有限公司
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