Preparation method and application of iron-nickel oxide coated carbon material

An oxide and carbon-coated technology, which is applied in the field of electrochemistry, can solve the problems of instability of transition metals, achieve uniform contact, excellent comprehensive performance, and simple implementation of the preparation method

Inactive Publication Date: 2019-05-14
ZHEJIANG NARADA POWER SOURCE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in addition to capacitor electrode materials, in electrode materials such as lithium-ion batteries, transition metals such as iron and nickel are oxides, and the negative electrode of lithium-ion batteries also exhibits 3 to 4 times higher capacity than carbon materials, but iron , nickel and other transition metals are unstable

Method used

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  • Preparation method and application of iron-nickel oxide coated carbon material
  • Preparation method and application of iron-nickel oxide coated carbon material
  • Preparation method and application of iron-nickel oxide coated carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 100g of ferrous sulfate and 100g of nickel chloride into 500ml of deionized water, then add 1g of sodium dodecylmethylbenzenesulfonate and 20g of citric acid, and then sonicate for 30 minutes until completely dispersed to obtain an iron-containing nickel source solution. Pour the iron-nickel source solution into the electrolytic cell. The bottom of the electrolytic cell is a stainless steel sheet. The natural flake graphite that has been degreased by alkali washing is placed on the surface of the cathode, and the iron plate and nickel plate with an area ratio of 1:1 are used as the anode. Into 0.5A / cm 2 Electrodepositing at a current density for 30 minutes yielded an intermediate composite. Adsorbed by a magnet, washed with a large amount of deionized water, and dried in a blast drying oven for 12 hours to obtain an iron-nickel oxide-coated carbon material. The iron-nickel oxide-coated carbon material and polytetrafluoroethylene (PTFE) were pressed on the nickel fo...

Embodiment 2

[0030] Change the ratio of iron and nickel sources, add 200g ferrous sulfate and 100g nickel chloride to 500ml deionized water, then add 1g sodium dodecylmethylbenzenesulfonate and 20g citric acid, and then ultrasonically disperse for 30min until completely dispersed to obtain Iron nickel source solution. Pour the iron-nickel source solution into the electrolytic cell. The bottom of the electrolytic cell is a stainless steel sheet. The natural flake graphite that has been degreased by alkali washing is placed on the surface of the cathode. The iron and nickel plates with an area ratio of 1:1 are used as sacrificial anodes. Into 0.5A / cm 2 Electrodepositing at a current density for 30 minutes yielded an intermediate composite. Adsorbed by a magnet, washed with a large amount of deionized water, and dried in a blast drying oven for 12 hours to obtain an iron-nickel oxide-coated carbon material. The iron-nickel oxide-coated carbon material and PTFE were pressed on the nickel foa...

Embodiment 3

[0032] Change the ratio of iron and nickel sources, add 100g ferrous sulfate and 200g nickel chloride to 500ml deionized water, then add 1g sodium dodecylmethylbenzenesulfonate and 20g citric acid, and then ultrasonically disperse for 30min to obtain Iron nickel source solution. Pour the iron-nickel source solution into the electrolytic cell. The bottom of the electrolytic cell is a stainless steel sheet. The natural flake graphite that has been degreased by alkali washing is placed on the surface of the cathode. The iron and nickel plates with an area ratio of 1:1 are used as sacrificial anodes. Into 0.5A / cm 2 Electrodepositing at a current density for 30 minutes yielded an intermediate composite. Adsorbed by a magnet, washed with a large amount of deionized water, and dried in a blast drying oven for 12 hours to obtain an iron-nickel oxide-coated carbon material. The iron-nickel oxide-coated carbon material and PTFE were pressed on the nickel foam at a ratio of 8:1 under a...

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Abstract

The invention provides a preparation method and application of an iron-nickel oxide coated carbon material. The preparation method of the iron-nickel oxide coated carbon material comprises the preparation step, the electrodeposition step and the drying step, wherein the preparation step is conducted, specifically, an iron-containing compound, a nickel-containing compound, a surfactant and a bufferagent are dissolved into a solvent to form an iron-nickel source containing solution; the electrodeposition step is conducted, specifically, the iron-nickel source containing solution is put into anelectrolytic cell to serve as an electrodeposition solution, a carbon material serves as a cathode, an iron plate and a nickel plate serve as double anodes, electrodeposition is conducted at the set current density, then still standing is conducted, a solvent is removed, and thus an intermediate complex is obtained; and the drying step is conducted, specifically, after the intermediate compound isdried, the iron-nickel oxide coated carbon material is obtained.

Description

technical field [0001] The invention relates to the technical field of electrochemistry, in particular to a preparation method and application of an iron-nickel oxide-coated carbon material. Background technique [0002] With people's emphasis on energy issues and environmental degradation, the use of clean energy and the development of new energy technologies have become the current consensus. As a new energy storage technology, lithium-ion battery technology can efficiently store and convert energy, but the power density of lithium-ion batteries is insufficient. Capacitors can achieve high-power charging and discharging. Lithium-ion capacitors formed by capacitors and lithium-ion batteries have broad application prospects. However, the lack of energy density of capacitors and the use of a single material lead to insufficient performance in some aspects limit its further development. [0003] Materials currently used in capacitor electrodes include carbon materials, transi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/525H01M4/62
CPCY02E60/10
Inventor 邓高肖辉江依义刘月学郭锋
Owner ZHEJIANG NARADA POWER SOURCE CO LTD
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