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Flaky CeO2/Co1.29Ni1.71O4 electrode material and preparation method thereof

A co1.29ni1.71o4, electrode material technology, applied in the direction of hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, etc., can solve the problems of poor conductivity and cycle stability, affecting the performance of supercapacitors, etc., to alleviate poor conductivity and The effects of poor cycle stability, low requirements for synthesis conditions, and simple preparation process

Active Publication Date: 2021-04-23
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most metal compounds have poor conductivity and cycle stability, which affects the performance of supercapacitors

Method used

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  • Flaky CeO2/Co1.29Ni1.71O4 electrode material and preparation method thereof
  • Flaky CeO2/Co1.29Ni1.71O4 electrode material and preparation method thereof
  • Flaky CeO2/Co1.29Ni1.71O4 electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Cut 30mm×10mm×1.5mm nickel foam with a pore size of 110ppi, soak it in 2M HCL and ultrasonically clean it for 15 minutes, then ultrasonically clean it with deionized water for 10 minutes, and finally use anhydrous ethanol for 10 minutes, and vacuum-dry the nickel foam after ultrasonication at 60°C for 12 hours.

[0028] Weigh 0.050g sodium lauryl sulfate, 0.050g urea, 0.116g nickel nitrate hexahydrate and 0.116g cobalt nitrate hexahydrate and dissolve them in 20mL deionized water, stir for 20min to obtain the initial solution; weigh 0.012g cerium nitrate hexahydrate to dissolve In 10 mL of deionized water, an aqueous cerium nitrate solution with a concentration of 2.76 mmol / L was obtained; the aqueous cerium nitrate solution was slowly added dropwise to the initial solution under stirring, and the stirring was continued for 1 h to obtain a uniform solution.

[0029] Move the dried nickel foam and homogeneous solution into the reactor, react at 170°C for 12 hours, wash th...

Embodiment 2

[0035] Cut 30mm×10mm×1.5mm nickel foam with a pore size of 110ppi, soak it in 1M HCL and ultrasonically clean it for 10 minutes, then sonicate it with deionized water for 10 minutes, and finally use anhydrous ethanol for 10 minutes, and dry the nickel foam after ultrasonication at 60°C for 12 hours in vacuum.

[0036] Weigh 0.055g sodium lauryl sulfate, 0.050g urea, 0.185g nickel nitrate hexahydrate and 0.185g cobalt nitrate hexahydrate and dissolve them in 20mL deionized water, stir for 20min to obtain the initial solution; weigh 0.008g cerium nitrate hexahydrate to dissolve In 10 mL of deionized water, an aqueous solution of cerium nitrate with a concentration of 1.84 mmol / L was obtained; the aqueous solution of cerium nitrate was slowly added dropwise to the initial solution under stirring, and the stirring was continued for 1 h to obtain a uniform solution.

[0037] Move the dried nickel foam and homogeneous solution into the reaction kettle to react at 170°C for 11 hours, ...

Embodiment 3

[0039] Cut 30mm×10mm×1.5mm nickel foam with a pore size of 110ppi, soak it in 2M HCL and ultrasonically clean it for 15 minutes, then ultrasonically clean it with deionized water for 10 minutes, and finally use anhydrous ethanol for 10 minutes, and vacuum-dry the nickel foam after ultrasonication at 60°C for 12 hours.

[0040] Weigh 0.050g sodium lauryl sulfate, 0.055g urea, 0.245g nickel nitrate hexahydrate and 0.245g cobalt nitrate hexahydrate and dissolve them in 20mL deionized water, stir for 20min to obtain the initial solution; weigh 0.016g cerium nitrate hexahydrate to dissolve In 10mL of deionized water, obtain a cerium nitrate aqueous solution with a concentration of 3.68mmol / L; slowly add a cerium nitrate aqueous solution to the initial solution under stirring, continue stirring for 1.5h to obtain a uniform solution, and transfer the dried nickel foam and the uniform solution into the reaction React in the kettle at 180°C for 12h, wash the reacted nickel foam with wat...

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Abstract

The invention discloses a flaky CeO2 / Co1.29Ni1.71O4 electrode material and a preparation method thereof, and belongs to the technical field of electrode materials. The method comprises the following specific steps of: ultrasonically cleaning foamed nickel, and drying to obtain clean foamed nickel; dissolving lauryl sodium sulfate, urea, nickel nitrate and cobalt nitrate in water, dropwise adding a cerous nitrate aqueous solution to form a uniform solution, adding foamed nickel, carrying out a hydrothermal reaction, washing the reacted foamed nickel with water, washing the washed foamed nickel with ethanol, drying the washed foamed nickel, and oxidizing the dried foamed nickel to obtain the flaky CeO2 / Co1.29 Ni1. 71O4 electrode material. The method disclosed by the invention is simple, low in reactant price, convenient in preparation process and low in energy consumption. The surface of the CeO2 / Co1.29Ni1.71O4 electrode material prepared by the method has a wrinkled sheet structure, the specific surface area of the material is large, and the CeO2 / Co1.29Ni1.71O4 electrode material has excellent electrochemical performance and is suitable for an electrode material of a supercapacitor.

Description

technical field [0001] The invention belongs to the technical field of electrode materials, in particular to a flaky CeO 2 / Co 1.29 Ni 1.71 o 4 An electrode material and a preparation method thereof, the material is used as an electrode material of a supercapacitor. Background technique [0002] With the progress of energy transformation, the demand for renewable intermittent energy supporting equipment is increasing, so the society is eagerly looking for an efficient and environmentally friendly energy storage device. As a new type of energy storage device, supercapacitors have the advantages of long cycle life, instantaneous power retention, and high-power pulse applications. They have broad application scenarios and can be used in various industrial equipment. Therefore, it is necessary to prepare electrode materials with high specific capacitance to Improve supercapacitor performance. [0003] Transition metal oxides are widely used as excellent electrode materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/46H01G11/24H01G11/86
CPCH01G11/46H01G11/24H01G11/86Y02E60/13
Inventor 史鸿雁庞洪微徐响响
Owner DALIAN UNIV OF TECH
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