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Preparation method of a high-performance cabbage-like heterostructure electrode material

A heterogeneous structure and electrode material technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve problems such as poor adhesion to current collectors, inability to accurately control synthesis methods, and poor electrical conductivity. , to achieve superior rate performance and improve electrochemical performance

Active Publication Date: 2022-02-08
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preparing an electrode material with a high-performance cabbage-shaped heterogeneous structure, which solves the problem of inhomogeneous material appearance, inability to accurately control the synthesis method, poor electrical conductivity, and poor adhesion to current collectors. Waiting for a question

Method used

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  • Preparation method of a high-performance cabbage-like heterostructure electrode material
  • Preparation method of a high-performance cabbage-like heterostructure electrode material
  • Preparation method of a high-performance cabbage-like heterostructure electrode material

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Embodiment 1

[0033] A method for preparing an electrode material with a high-performance cabbage-like heterostructure, the method comprising;

[0034] 1) Pre-treat the foamed nickel, ultrasonication in deionized water for half an hour, then ultrasonic treatment with alcohol for half an hour, repeat three times, and finally put the foamed nickel into a vacuum drying oven to dry;

[0035]2) Dissolve 2mmol nickel acetate, 4mmo cobalt acetate, 2mmol sodium molybdate, 30mmol ammonium fluoride, and 2g urea into 60ml water, stir for 60 minutes, then transfer the above solution into an 80ml reaction kettle, and keep it warm at 120°C for 12h ; Wait for it to cool down to room temperature naturally, and wash it five times with absolute ethanol and deionized water. Then the prepared samples were dried (at 60° C. for 12 h).

[0036] 3) Next, dissolve 8 mmol of sodium sulfide in 60 ml of deionized water, stir magnetically for 45 min, then transfer the above prepared sample into this solution, then tra...

Embodiment 2

[0044] Different from Example 1, 2) 3mmol nickel acetate, 5mmo cobalt acetate, 3mmol sodium molybdate, 40mmol ammonium fluoride, 5g urea were dissolved in 60ml water, stirred for 60 minutes, then the above solution was transferred to the 80ml reaction kettle, and Keep it warm at 120° C. for 12 hours; wait for it to cool down to room temperature naturally, and wash it five times with absolute ethanol and deionized water. Then the prepared samples were dried (at 60° C. for 12 h).

[0045] 3) Next, dissolve 9 mmol of sodium sulfide in 70 ml of deionized water, stir magnetically for 45 min, then transfer the above prepared sample into this solution, then transfer the above solution into a 90 ml reactor, and keep it at 90°C for 12 h. After it was naturally cooled to room temperature, it was washed three times with absolute ethanol and deionized water. Then the prepared samples were dried (6h at 60°C).

[0046] Carry out X-ray detection to the finished product that embodiment 1 ob...

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Abstract

The invention belongs to the field of electrode material preparation, in particular to a preparation method of an electrode material with a high-performance cabbage-shaped heterostructure. The method comprises: pretreatment of foamed nickel, 2-3mmol nickel acetate, 4-5mmo cobalt acetate, 2-3mmol sodium molybdate, 30-40mmol ammonium fluoride, 2-5g urea dissolved in 60-100ml water, stirring, Reaction, cooling, cleaning and drying obtain the prepared sample; 8-9mmol sodium sulfide is dissolved in 60-70ml deionized water, magnetically stirred for 45min, then the prepared sample is transferred to this solution, transferred to the reaction kettle, and Insulate at 80‑90°C for 12 hours, cool naturally to room temperature, wash with absolute ethanol and deionized water three times, and dry the prepared sample at 60°C for 6 hours to obtain the finished product. Solve the problems of uneven material morphology, inability to accurately control the synthesis method, poor electrical conductivity, and poor adhesion to current collectors.

Description

technical field [0001] The invention belongs to the field of electrode material preparation, in particular to a method for preparing a high-performance cabbage-shaped heterostructure electrode material, which can be used in related fields such as batteries, capacitors, and electrocatalysis. Background technique [0002] At present, in order to solve the problem of energy shortage and environmental pollution caused by the use of traditional energy, many countries around the world are rapidly researching and developing various pollution-free and high-performance energy storage technologies. There are two types of energy storage devices that have attracted much attention, namely are secondary batteries and supercapacitors. At present, the risk factor of the electrolyte of the battery is relatively high. When the energy storage device converts energy, it will also generate heat. When the heat accumulates to a certain extent, it may cause damage to the device or even cause an acc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/86
CPCH01G11/30H01G11/24H01G11/86
Inventor 武祥赵德鹏戴美珍刘恒岐
Owner SHENYANG POLYTECHNIC UNIV
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