Nanosheet self-assembly ferrocobalt hydroxide and preparation method thereof

A hydroxide and self-assembly technology, which is applied in the preparation of nanosheet self-assembled cobalt-iron hydroxide, in the field of nanosheet self-assembled cobalt-iron hydroxide, can solve the problem that the electrochemical characteristics of nanosheet cobalt-iron hydroxide need to be improved , production cost and product efficiency are difficult to meet at the same time, to achieve the effects of low cost, increased stability, and increased active specific surface area

Active Publication Date: 2017-03-22
LONG POWER SYST NANTONG CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the deficiencies of the prior art, the object of the present invention is to provide a nano-sheet self-assembled cobalt-iron hydroxide and its preparation method, to solve the problem that the prior art is difficult to satisfy both the production cost and the high efficiency of the product, and the production The electrochemical characteristics of the nanosheet self-assembled cobalt-iron hydroxides need to be improved

Method used

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  • Nanosheet self-assembly ferrocobalt hydroxide and preparation method thereof
  • Nanosheet self-assembly ferrocobalt hydroxide and preparation method thereof
  • Nanosheet self-assembly ferrocobalt hydroxide and preparation method thereof

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preparation example Construction

[0029] A nanosheet self-assembled honeycomb structure cobalt-iron hydroxide and a preparation method thereof, comprising the steps of:

[0030] S1, with Co 2+ , Fe 3+ , NO 3 - Preparation of electrodeposition solutions for solute ions;

[0031] S2. Immerse the porous nickel foam and the graphite sheet as the cathode and the anode in the electrodeposition solution respectively, the deposition voltage is 1.9-3.0V, and the time is 30-200s;

[0032] S3. Rinse the electrodeposited product prepared in step S2 with ultrapure water, and then put it into an ultrasonic cleaner for oscillating cleaning at full power for 3-5 minutes.

[0033] S4, drying the sample prepared in S3 to obtain nanosheet self-assembled honeycomb structure cobalt-iron hydroxide.

[0034] The preparation system includes two processes, one of which is chemical deposition reaction and the other is electrochemical reaction. When the electrification starts, when the current passes through the positive and negat...

Embodiment 1

[0048] The preparation method of the nanosheet self-assembled honeycomb structure cobalt-iron hydroxide of the present embodiment comprises the following steps:

[0049] S1. Prepare Co(NO 3 ) 2 , Fe(NO 3 ) 3 Mixed solution, where Co 2+ with Fe 3+ The concentration ratio of 2:1 is used as the electrodeposition solution;

[0050] S2, the porous nickel foam (size: 1cm × 3cm) is used as the cathode, and the double-layer graphite sheet is placed in the electrodeposition solution as the anode, and a supercapacitor tester is used to carry out the deposition experiment. The deposition voltage is 2.0V, and the deposition time is 120s;

[0051] S3. Rinse the electrodeposited product prepared in step S2 with ultrapure water, and then put it into an ultrasonic cleaner for oscillating cleaning at full power for 3 to 5 minutes;

[0052] S4. Dry the sample prepared in S3 at 30° C. for 6 hours in a blower box.

Embodiment 2

[0054] The steps of this embodiment are exactly the same as those of Embodiment 1, the difference is that in step S1, Co 2+ with Fe 3+ The concentration ratio is 1:1; in step S2, the deposition voltage is 2.1V, and the deposition time is 240s; in step S4, the drying temperature is 50°C, and the drying time is 2h.

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Abstract

The invention discloses a preparation method of a nanosheet self-assembly ferrocobalt hydroxide. The preparation method is characterized by comprising the following steps: (S1) Co2+, Fe3+ and NO3- are used as solute ions for preparing electric deposition solution; (S2) foam nickel is used as a cathode; and graphite sheets are used as anodes to respectively dip in the electric deposition solution to obtain an electric deposition product; (S3) the electric deposition product prepared in the step (S2) is cleaned; and (S4) a sample prepared in the step (S3) is dried. The invention further discloses the nanosheet self-assembly ferrocobalt hydroxide prepared by the preparation method. The preparation method has such characteristics as simplicity, high efficiency, low cost and low environmental pollution, and facilitates large-scale technological production. The prepared nanosheet self-assembly ferrocobalt hydroxide greatly improves the nanosheet structure stability, meanwhile, prominently increases the activity specific surface area when serving as an electrode material, and accelerates the conveying speed of ions in the electrode materials.

Description

technical field [0001] The present invention relates to a method for preparing nanomaterials, in particular to a method for preparing nanosheet self-assembled cobalt-iron hydroxide. The present invention also relates to the nanosheet self-assembled cobalt-iron hydroxide prepared by the preparation method. The field of material preparation. Background technique [0002] As an important functional material, layered double hydroxides have been more and more researched and applied in flame retardant materials, magnetism, optics, chemical separation, ion exchange, catalysis, environmental governance, etc. At the same time, due to It has a unique sheet-layer pore structure, which can simultaneously utilize two energy storage mechanisms of electric double-layer capacitance and Faraday quasi-capacitance, and has abundant raw materials and low cost, showing certain advantages as an electrode material for supercapacitors. At present, the preparation methods of layered double metal hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/08H01G11/86B82Y40/00
CPCY02E60/13C25D9/08B82Y40/00H01G11/86
Inventor 戴玉明朱帅帅王章忠李长振黄伟朱科宇王怡张天宇
Owner LONG POWER SYST NANTONG CO LTD
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