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Doping type supercapacitor electrode material

A technology for supercapacitors and electrode materials, which is applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of poor cycle performance, power density, and low energy density, and achieve the effects of easy large-scale application, excellent rate performance, and simple and effective methods.

Inactive Publication Date: 2014-11-19
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, although carbon materials have good cycle performance, they have low energy density.
Metal organics and conductive polymers have higher energy density, but poor cycle performance and power density.

Method used

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  • Doping type supercapacitor electrode material
  • Doping type supercapacitor electrode material
  • Doping type supercapacitor electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Mix 0.166g terephthalic acid, 0.096g nickel nitrate hexahydrate and 0.0228g ZnCl 2 Dissolve in 20 ml DMF;

[0023] 2) Dissolve 1.6g NaOH in 100ml H 2 O middle;

[0024] 3) Add 2ml of the solution described in step 2) dropwise to the solution described in step 1) at a rate of 1ml / min;

[0025] 4) Put the solution described in step 3) into the reactor, and react at 100°C for 8 hours;

[0026] 5) The product obtained in step 4) was washed three times with DMF and ethanol respectively, and baked at 70°C for 24 hours to obtain a sample;

[0027] 6) The zinc-doped nickel-based metal-organic framework material is made into a supercapacitor electrode through steps such as wet mixing, rolling into a film, and drying.

[0028] The zinc-doped nickel-based metal-organic framework electrode prepared in this example has a maximum specific capacity of 1620 F g -1 , after 3000 cycles, the capacity retention rate is 91%.

Embodiment 2

[0030] 1) Mix 0.166g terephthalic acid, 0.096g nickel nitrate hexahydrate and 0.0456 ZnCl 2 Dissolve in 20 ml DMF;

[0031] 2) Dissolve 1.6g NaOH in 100ml H 2 O middle;

[0032] 3) Add 2ml of the solution described in step 2) dropwise to the solution described in step 1) at a rate of 1ml / min;

[0033] 4) Put the solution described in step 3) into the reactor, and react at 100°C for 8 hours;

[0034] 5) The product obtained in step 4) was washed three times with DMF and ethanol respectively, and baked at 70°C for 24 hours to obtain a sample;

[0035] 6) The zinc-doped nickel-based metal-organic framework material is made into a supercapacitor electrode through steps such as wet mixing, rolling into a film, and drying.

[0036] The zinc-doped nickel-based metal-organic framework electrode prepared in this example has a maximum specific capacity of 1630 F g -1 , after 3000 cycles, the capacity retention rate is 91.2%.

Embodiment 3

[0038] 1) Mix 0.166g terephthalic acid, 0.096g nickel nitrate hexahydrate and 0.0912g ZnCl 2 Dissolve in 20 ml DMF;

[0039] 2) Dissolve 1.6g NaOH in 100ml H 2 O middle;

[0040] 3) Add 2ml of the solution described in step 2) dropwise to the solution described in step 1) at a rate of 1ml / min;

[0041] 4) Put the solution described in step 3) into the reactor, and react at 100°C for 8 hours;

[0042] 5) The product obtained in step 4) was washed three times with DMF and ethanol respectively, and baked at 70°C for 24 hours to obtain a sample;

[0043] 6) The zinc-doped nickel-based metal-organic framework material is made into a supercapacitor electrode through steps such as wet mixing, rolling into a film, and drying.

[0044] The zinc-doped nickel-based metal-organic framework electrode prepared in this example has a maximum specific capacity of 1615 F g -1 , after 3000 cycles, the capacity retention rate is 90.3%.

[0045] figure 1 It is an X-ray diffraction pattern o...

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Abstract

The invention provides a doping type supercapacitor electrode material. A simple hydrothermal method is adopted, zinc doped nickel-base metal organic frame material is synthesized for the first time and is applied to a supercapacitor for the first time. By controlling the concentration of reactants, the solution mixing mode, the reaction time, the reaction temperature and other technological parameters, the zinc doped supercapacitor electrode material is successfully synthesized, and high capacity, large magnification, long circulation and other superior characters are shown.

Description

technical field [0001] The invention belongs to the field of supercapacitors, in particular to a doped supercapacitor electrode material. Background technique [0002] In recent years, supercapacitors have been widely studied for their high power density, fast charge-discharge capability, stable cycle life, and environmental protection. Supercapacitors can be divided into two categories according to their energy storage mechanism, electric double layer capacitance and pseudocapacitance. The former is produced by the confrontation of charges caused by the directional arrangement of electrons or ions at the electrode solution interface, and the latter is produced by the electrode surface or pseudocapacitance. In the two-dimensional or quasi-two-dimensional space in the bulk phase, the electroactive material undergoes underpotential deposition, and a high degree of chemical adsorption and desorption or redox reaction occurs, thereby generating a capacitance related to the charg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30
CPCY02E60/13
Inventor 魏明灯孙杨杰
Owner FUZHOU UNIV
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