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Mobile in-situ thin-layer electrolysis method for continuous synthesis of metal oxide or metal deposit micro/nanostructures on electrodes

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

Active Publication Date: 2022-04-15
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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  • Mobile in-situ thin-layer electrolysis method for continuous synthesis of metal oxide or metal deposit micro/nanostructures on electrodes
  • Mobile in-situ thin-layer electrolysis method for continuous synthesis of metal oxide or metal deposit micro/nanostructures on electrodes

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Example 1 - Preparation of Manganese Oxide Micro / Nanostructures on Platinum Wires

[0023] Step S1, prepare 50g·L -1 (in terms of manganese) acidic manganese sulfate solution is used as electrolyte, the preparation method is: weigh 76.82g manganese sulfate monohydrate powder and dissolve it in 300mL distilled water, add 14mL of concentrated sulfuric acid dropwise in the dissolved manganese sulfate aqueous solution after dissolving, set Capacity to 500mL.

[0024] In step S2, a water curtain diverter with a length of about 15 mm and a width of about 0.5 mm is placed in an acrylic reactor with a size of 14.8 cm×7 cm×6.8 cm.

[0025] In step S3, a platinum wire with a diameter of 0.1 mm and a length of about 7 cm was taken, polished with 600-grit sandpaper, and used as an anode, that is, a wire-shaped electrode substrate of manganese oxide. Take a stainless steel wire with a diameter of 0.2mm about 25cm in length, grind it with 600-mesh sandpaper, and use it as the catho...

Embodiment 2-

[0029] Example 2- Preparation of nickel oxide micro / nanostructures on gold wire

[0030] Step S1, preparing a mixed solution of nickel sulfate and nickel chloride as an electrolyte, and the components of the electrolyte are 120g L respectively -1 Nickel sulfate, 45g·L -1 Nickel chloride, 35g·L -1 boric acid.

[0031] In step S2, a water curtain diverter with a length of about 15 mm and a width of about 3 mm is placed in an acrylic reactor with a size of 14.8 cm×7 cm×6.8 cm.

[0032] In step S3, a gold wire with a diameter of 1 mm and a length of about 10 cm is taken, polished with 600-grit sandpaper, and used as an anode, which is the strip-shaped electrode substrate for nickel oxide deposition. Take a stainless steel wire with a diameter of 0.2mm about 25cm in length, grind it with 600-mesh sandpaper, and use it as the cathode.

[0033] Step S4, pour the prepared mixed solution of nickel sulfate and nickel chloride into the beaker, and use a constant flow pump to control ...

Embodiment 3

[0036] Example 3 - Preparation of manganese oxide micro / nanostructures on carbon paper

[0037] Step S1, prepare 90g·L -1 (in terms of manganese) acidic manganese sulfate solution is used as electrolyte, the preparation method is: weigh 138.27g manganese sulfate monohydrate powder and dissolve it in 300mL distilled water, add 14mL concentrated sulfuric acid dropwise in the dissolved manganese sulfate aqueous solution after dissolving, set Capacity to 500mL.

[0038] In step S2, a water curtain diverter with a length of about 15 mm and a width of about 2 mm is placed in an acrylic reactor with a size of 14.8 cm×7 cm×6.8 cm.

[0039] In step S3, carbon paper with a width of 2 mm and a thickness of 0.2 mm is taken as an anode with a length of about 20 cm, which is the strip-shaped electrode substrate deposited by manganese oxide. Take a stainless steel wire with a diameter of 1 mm and a length of about 30 cm, and use it as a cathode after being polished with 600 mesh sandpaper....

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Abstract

The invention provides a mobile in-situ thin-layer electrolysis method for continuously synthesizing metal oxide or metal deposit micro / nano structures on electrodes, which is characterized in that: the cathode and anode electrodes are strip-shaped or strip-shaped electrodes, and the anode and cathode electrodes Parallel phases pass through the thin-layer electrolyte to achieve precise electrodeposition and growth of metal oxide or metal deposit micro / nanostructures on the electrode positions corresponding to the thin-layer electrolyte, and finally wrap the entire electrode. The thin-layer electrolyte The thickness is 10nm ~ 10mm. Using a thin layer of electrolyte, the contact area between the electrode and the electrolyte is small. By moving the cathode and anode electrodes, the sediment can be quickly separated from the reaction system, and finally wrap the entire strip or wire electrode, which can be combined with the drafting and rolling of the anode and cathode electrodes by the roller. Taken to achieve large-scale continuous growth.

Description

technical field [0001] The invention relates to a mobile in-situ thin-layer electrolysis method for continuously synthesizing metal oxide or metal deposit micro / nano structures on electrodes, belonging to the field of electrochemistry. Background technique [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 cont...

Claims

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Application Information

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Patent Type & Authority Patents(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