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Method for continuously synthesizing metal oxide or metal deposit micro/nano structure on electrode by mobile in-situ thin-layer electrolysis method

A nanostructure and mobile technology, applied in the field of electrochemistry, can solve the problems of uncontrollable thickness, harsh reaction conditions, cumbersome process, etc., and achieve precise control of structure growth position and thickness, high local current density, convenience and simple operation Effect

Active Publication Date: 2021-08-10
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the industry, most of the methods for electrochemically depositing metal oxide or metal deposit micro / nanostructures on strip or strip electrodes use intermittent deposition methods, and the obtained structures are relatively simple.
[0003] In addition, most of the existing metal oxide or metal deposit micro / nanostructure synthesis methods use methods such as hydrothermal synthesis, which have problems such as harsh reaction conditions and cumbersome processes.
[0004] Moreover, the current method of preparing metal oxide micro / nano arrays is to soak the electrodes in the electrolyte, apply a voltage, and grow metal oxide micro / nano structures on the two-dimensional substrate, the production continuity is not good, and it is impossible to Accurately control the growth position of the micro / nanostructure in the electrode axial direction, and the thickness is uncontrollable, which limits the development of metal oxide micro / nanostructures in subsequent research and applications

Method used

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  • Method for continuously synthesizing metal oxide or metal deposit micro/nano structure on electrode by mobile in-situ thin-layer electrolysis method
  • Method for continuously synthesizing metal oxide or metal deposit micro/nano structure on electrode by mobile in-situ thin-layer electrolysis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 - Preparation of Manganese Oxide Microdes / Nano Structure on Platinum

[0023] Step S1, formulate 50g · L -1 (In manganese), manganese sulfate is used as an electrolytic solution, and the formulation method is: weighing 76.82 g of a hydrazine sulfate powder is dissolved in 300 ml of distilled water, and 14 ml of concentrated sulfuric acid is added dropwise after dissolving. Rapid 500ml.

[0024] In step S2, the size of 14.8 cm × 7 cm × 6.8 cm is in the acrylic reactor, the length of about 15 mm, a water curtain drain of about 0.5 mm.

[0025] Step S3, a platinum wire having a diameter of 0.1 mm is about 7 cm, and after being polished by 600 mesh sandpaper, the anode is made, that is, the filamental electrode substrate of the manganese oxide. Take a diameter of 0.2 mm of stainless steel wire about 25 cm long, and is polished by 600 mesh sandpaper after the cathode.

[0026] Step S4, pour into the formulated 50g · L -1 In the beaker, acidic sulfate solution is cont...

Embodiment 2-

[0029] Example 2 - Preparation of Nickel Oxide Micro / Nano Structure on Gold Wire

[0030] Step S1, formulated nickel sulfate, nickel chloride mixing solution as an electrolyte, the electrolyte ingredients are 120 g · L -1 Nickel sulfate, 45g · L -1 Nickel chloride, 35g · L -1 Boric acid.

[0031] In step S2, the size of 14.8 cm × 7 cm × 6.8 cm is in the acrylic reactor, the length of about 15 mm, a water curtain drain of about 3 mm.

[0032] Step S3 is taken from about 10 cm of a gold portion having a diameter of 1 mm, and is polished by 600 mesh sandpaper, that is, a strip electrode substrate deposited by a nickel oxide. Take a diameter of 0.2 mm of stainless steel wire about 25 cm long, and is polished by 600 mesh sandpaper after the cathode.

[0033] Step S4, poured into the preformed sulfate, nickel chloride mixed solution in the beaker, control the electrolyte by the constant current pump to flow into the water curtain device 30 ml · h -1 .

[0034] Step S5, the anode mater...

Embodiment 3

[0036] Example 3 - Preparation of Manganese Oxide Microd / Nano Structure on Carbon Paper

[0037] Step S1, formulate 90g · L -1 (In manganese), manganese acid sulfate is used as an electrolyte, and the formulation method is: weighing 138.27 g of a hydroformate powder is dissolved in 300 ml of distilled water, and 14 ml of concentrated sulfuric acid is added dropwise after dissolving. Rapid 500ml.

[0038] In step S2, the size of 14.8 cm × 7 cm × 6.8 cm is in the case of approximately 15 mm, a water curtain drain of about 2 mm.

[0039] Step S3, a carbon paper having a thickness of 2 mm, a thickness of 0.2 mm, is a ribbon electrode substrate deposited by a manganese oxide. The stainless steel wire with a diameter of 1 mm is about 30 cm long, and after 600 mesh sandpaper is polished, it is a cathode.

[0040] Step S4, pour into the formulation 90g · L -1 Acid sulfate solution in the beaker, controls the rate of electrolyte with a constant current pump to flow into the water curtain...

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Abstract

The invention provides a method for continuously synthesizing a metal oxide or metal deposit micro / nano structure on an electrode by a mobile in-situ thin-layer electrolysis method. The method is characterized in that a positive electrode and a negative electrode are both belt-shaped or strip-shaped electrodes and penetrate through a thin-layer electrolyte in parallel at intervals, the metal oxide or metal deposit micro / nano structure is accurately electrodeposited and grown on an electrode position corresponding to the thin-layer electrolyte, the whole electrode is finally wrapped, and the thickness of the thin-layer electrolyte is 10 nm-10 mm. The thin-layer electrolyte is adopted, the contact area between the electrodes and the electrolyte is small, deposits can be rapidly separated from a reaction system by moving the positive electrode and the negative electrode, the whole strip-shaped or wire-shaped electrode is finally wrapped, and large-scale continuous growth can be achieved by combining drafting and coiling of the positive electrode and the negative electrode through a roll shaft.

Description

Technical field [0001] The present invention relates to a method of continuously synthesizing a metal oxide or metal deposit mic / on structure on an electrode, belonging to an electrochemical field. Background technique [0002] At present, most of the methods of depositing metal oxides or metal sediment microdes / nanostructures in strip or strip electrodes, most of which are intermittent deposition methods, and the structure is also compared. [0003] In addition, there are many methods such as water-heat synthesis such as water-heating synthesis in the existing metal oxide or metal sediment micro / nanostructure synthesis method, and there is a demanding reaction conditions, and the process is cumbersome. [0004] Further, the method of preparing a metal oxide micro / nanine array is that the electrode is soaked in the electrolyte, applying a voltage, and has a metal oxide micro / nanostructure on the two-dimensional substrate, and the production is not good, and it is not pos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/04C25D5/08C25D5/04C25D7/06B82Y40/00
CPCC25D9/04C25D5/08C25D5/04C25D7/06B82Y40/00
Inventor 范兴江敏薛捷孔令峰陶长元刘仁龙杜军骆新鑫
Owner CHONGQING UNIV