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Preparation method and application of a kind of electrode material

An electrode material and reaction technology, applied in the field of electrode material preparation, can solve the problems of limited electrochemical performance, small specific surface area and non-porous structure

Active Publication Date: 2019-02-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the small specific surface area and non-porous structure of metal sulfides limit the further improvement of their electrochemical performance.

Method used

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  • Preparation method and application of a kind of electrode material
  • Preparation method and application of a kind of electrode material
  • Preparation method and application of a kind of electrode material

Examples

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preparation example Construction

[0024] The invention provides a preparation method of an electrode material, comprising: mixing a cobalt salt, a nickel salt, a sulfur source compound, a shape-adjusting mineralizer and an electrode carrier in an alcohol solvent to obtain a reaction solution; heating the reaction solution reaction to obtain an electrode material; the shape-adjusting mineralizer is an inorganic acid and / or an inorganic salt.

[0025] The present invention has no special limitation on the sources of all raw materials, which can be commercially available.

[0026] Wherein, the cobalt salt is a cobalt salt well known to those skilled in the art, and there is no special limitation. In the present invention, it is preferably one or more of cobalt nitrate, cobalt chloride and cobalt sulfate; the nickel salt It can be a nickel salt well-known to those skilled in the art, and there is no special limitation. In the present invention, it is preferably one or more of nickel nitrate, nickel chloride and ni...

Embodiment 1

[0037] First, 0.26mol / L of Co(NO 3 ) 2 ·6H 2 O, 0.13mol / L Ni(NO 3 ) 2 ·6H 2 O and 0.6mol / L of thiourea were dissolved in methanol, and then 0.06mmol / L of morphology-adjusting mineralizer sodium chloride was added, stirred and mixed evenly; Treated electrode carrier: carbon paper; seal the autoclave and place it at 180°C for 2 hours; take out the electrode carrier and wash and dry it to obtain NiCo loaded with carbon paper as the electrode carrier. 2 S 4 active material electrode material.

[0038] Utilize scanning electron microscope to analyze the electrode material that obtains in embodiment 1, obtain its scanning electron microscope picture, as figure 1 As shown, it presents a three-dimensional sheet.

[0039] Adopt electrochemical workstation, three-electrode test mode, with the KOH solution of 2mol / L as electrolytic solution, the electrode material obtained in embodiment 1 is carried out electrochemical performance test, obtains its charging and discharging perfor...

Embodiment 2

[0041] First, 0.26mol / L of Co(NO 3 ) 2 ·6H 2 O, 0.13mol / L Ni(NO 3 ) 2 ·6H 2 O and 0.52mol / L of thiourea were dissolved in methanol, and then 0.065mol / L of morphology-adjusting mineralizer sodium sulfide was added, and stirred and mixed evenly; electrode carrier: carbon paper; seal the autoclave and place it at 180°C for 2 hours; take out the electrode carrier and wash and dry it to obtain NiCo loaded with carbon paper as the electrode carrier 2 S 4 active material electrode material.

[0042] Utilize scanning electron microscope to analyze the electrode material that obtains in embodiment 2, obtain its scanning electron microscope picture, as image 3 As shown, it presents a three-dimensional network.

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Abstract

The invention provides a preparation method of an electrode material. The preparation method comprises the following steps: mixing a cobalt salt, a nickel salt, a sulfur source compound and a shape conditioning mineralizer with an electrode carrier in an alcohol solvent so as to obtain a reaction liquid; and carrying out a heating reaction on the reaction liquid so as to obtain the electrode material, wherein the shape conditioning mineralizer is inorganic acid and / or inorganic sodium salt. Compared with the prior art, the integral electrode material is prepared with a one-step method, and the inorganic acid and / or the inorganic salt and / is added as the morphology conditioning mineralizer in the preparation process, so that the prepared and obtained flaky or net-shaped electrode material has excellent super-capacitor performance.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and in particular relates to a preparation method and application of an electrode material. Background technique [0002] Supercapacitor is a new type of energy storage device, which has the advantages of large power density, excellent rate performance, fast charge and discharge rate, and long cycle life. It is an ideal auxiliary or active power source for electric vehicles. [0003] Electrode materials play a crucial role in the performance of supercapacitors. Commonly used active materials for electrode materials include: porous carbon materials, transition metal oxide and hydroxide materials, conductive polymers, metal halides, etc. Studies have shown that transition metal sulfides are ideal high-performance supercapacitor electrode materials due to their multi-stage redox reaction process and high theoretical specific capacitance. However, the small specific surface area and non-por...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86
CPCY02E60/13
Inventor 铁津津孙明陈丰叶飞余林
Owner GUANGDONG UNIV OF TECH
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