Preparation method of sulfur modified metal hydroxide electrode material

A technology of hydroxide and electrode materials, applied in nanotechnology for materials and surface science, hybrid capacitor electrodes, nanotechnology, etc., can solve problems such as human and environmental hazards, complex production processes, and limited applications, and achieve cost-effective The effect of low cost, simple preparation process, and less energy consumption

Inactive Publication Date: 2018-11-27
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As we all know, the traditional sulfide synthesis technology generally produces toxic gases, which cause great harm and pollution to the human body and the environment d

Method used

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  • Preparation method of sulfur modified metal hydroxide electrode material
  • Preparation method of sulfur modified metal hydroxide electrode material
  • Preparation method of sulfur modified metal hydroxide electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1.1 Dissolve 0.48g of NaOH and 0.5g of natural polymer agar into 10mL of deionized water, and ultrasonically disperse the resulting mixture until a uniform light yellow suspension is obtained, and keep it in a water bath at 85°C for 10min to obtain a brown color The gel, and the gel was placed at room temperature for 4 hours, and finally completely condensed into a dark brown jelly-like solid, that is, NaOH / agar gel was obtained as an alkali source;

[0034] 1.2 Add 0.7g of agar to 20mL with a molar concentration of 0.03mol L -1 Na 2 In the S solution, ultrasonically disperse into the sodium sulfide solution, and heat it at 85°C for 10min. At room temperature, after cooling for 4h, a light green Na 2 S / agar gel, as a sulfur source;

[0035]1.3 Dissolve nickel nitrate hexahydrate, cobalt nitrate hexahydrate and ammonium chloride (0.44g, 0.71g and 0.08g) in a mixture of 15mL deionized water and 50mL N,N-dimethylformamide, and slowly Drop it into the NaOH / agar gel prepa...

Embodiment 2

[0044] Steps 1.1-1.2 are the same as steps 1.1-1.2 in Example 1;

[0045] 1.3 Dissolve nickel nitrate hexahydrate, cobalt nitrate hexahydrate and ammonium chloride (0.44g and 0.71g and 0g) in a mixture of 15mL deionized water and 50mL N,N-dimethylformamide, according to Example 1 In step 1.3, metal hydroxide is obtained;

[0046] Step 1.4 is the same as Step 1.4 in Example 1 to obtain a sulfur-modified metal hydroxide electrode material.

Embodiment 3

[0048] Steps 1.1-1.2 are the same as steps 1.1-1.2 in Example 1;

[0049] 1.3 Dissolve nickel nitrate hexahydrate, cobalt nitrate hexahydrate and ammonium chloride (0.44g, 0g and 0.08g) in a mixture of 15mL deionized water and 50mL N,N-dimethylformamide, according to Example 1 In step 1.3, metal hydroxide is obtained;

[0050] Step 1.4 is the same as Step 1.4 in Example 1 to obtain a sulfur-modified metal hydroxide electrode material.

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Abstract

The invention provides a preparation method of a sulfur modified metal hydroxide electrode material and belongs to the technical field of preparation of electrode materials. According to the preparation method, firstly, NaOH/agar gel is prepared; OH- and gel have a very strong binding force so that the dispersion of the gel on a solid-liquid interface is easy to control and the formation of ultrathin flower-shaped nano-sheet metal hydroxide is facilitated; then Na2S/agar gel is synthesized, and NiS/CoS with a smaller solubility product is generated on the surface of the hydroxide at room temperature through an ion exchange method, and furthermore, the ultrathin nano-flower sulfur modified metal hydroxide electrode material with excellent performance is formed. The preparation technology provided by the invention has the characteristics of simplicity, economical efficiency and energy saving; dangers of causing toxic gas of a traditional sulfide synthesis technology are abandoned, and the preparation method has the characteristics of greenness and environment protection; meanwhile, a compound supercapacitor prepared from the electrode material has the advantages of low cost, simple production technology and very high energy density and good circulation stability, so that the preparation method is suitable for industrial application.

Description

technical field [0001] The invention belongs to the technical field of electrode material preparation, and in particular relates to a method for preparing a sulfur-modified metal hydroxide electrode material. Background technique [0002] At present, some electronic devices such as electric vehicles, home electronics, and portable devices have greatly facilitated our lives, but their shortcomings such as low service life and energy storage capacity limit their wide application. Supercapacitors, as efficient energy storage devices, have attracted extensive attention due to their long cycle life, high energy density, and fast charge-discharge performance. At the same time, exploring efficient electrode materials plays a key role in improving the overall performance of supercapacitors. Among them, the battery-type nickel-cobalt hydroxide has various oxidation states, high theoretical capacity and long discharge platform, so it is often used as a material for preparing supercap...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01G11/24H01G11/30Y02E60/13
Inventor 赵丽君冯利亚杨晓红叶林鲍泽培
Owner JILIN UNIV
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