Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of nano-porous carbon aerogel of super capacitor

A supercapacitor and nanoporous carbon technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc., can solve the problems of activated carbon specific capacity and specific surface area limitations, difficult specific capacity, etc., to achieve good specific capacity , the effect of high application value

Inactive Publication Date: 2015-04-29
TIANJIN DERUI FENGKAI NEW MATERIAL TECH
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the mainstream material for manufacturing supercapacitors is activated carbon, but the specific capacity and specific surface area of ​​activated carbon are limited, and it is difficult to achieve a better specific capacity.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] A kind of preparation method of the nanoporous carbon airgel of supercapacitor, any following metal ion Al 3+ , Li + ,Zn 2+ ,Cu 2+ ,Pb 2+ Underpotential deposition on the surface of carbon aerogels provides Faraday quasi-capacitance for electrochemical double-layer capacitors. Specifically include the following steps:

[0015] Step 1. Add a concentration of 3.0 to 4.0×10 to the KOH electrolyte of the supercapacitor -2 mol / L of any of the following ionic solutions Al 3+ , Li + ,Zn 2+ ,Cu 2+ , Pb 2+ ;

[0016] Step 2, using the above-mentioned ion solution to modify the carbon airgel powder, so that the above-mentioned ions are deposited in the micropores of the carbon aerogel, thereby obtaining the nanoporous carbon aerogel of the supercapacitor.

[0017] In this step, there are two ways to modify the carbon airgel powder:

[0018] Method 1 is: will use Pb (NO 3 ) 2 The solution soaks carbon aerogels under vacuum conditions, making the Pb(NO 3 ) 2 The sol...

Embodiment 1

[0021] Add 3.1×10 -2 mol / LPb 2+ Pb(Ac) 2 , through the supercapacitor charging and discharging activation process, the metal ions are converted into Pb(OH) 2 deposited on the carbon aerogel surface.

Embodiment 2

[0023] Add 4.0×10 -2 mol / LPb 2+ Pb(Ac) 2 , through the supercapacitor charging and discharging activation process, the metal ions are converted into Pb(OH) 2 deposited on the carbon aerogel surface.

[0024] It is very meaningful to use the Faraday quasi-capacitance to increase the capacitance of double-layer capacitors. The invention selects metal ions capable of underpotential deposition on the surface of the carbon airgel material to increase the specific capacitance of the carbon airgel electrode, thereby increasing the capacity of the supercapacitor. Single double-layer capacitors are based on high specific surface area materials, such as the double-layer capacitance at the solid / liquid surface of carbon aerogel. Similar to traditional capacitors, the storage of electric energy is based on the electrolytic double-layer capacitor at the horizontal electrode / solution interface. Based on charging within the layer, when a DC voltage is applied to the interface of the elec...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of nano-porous carbon aerogel of a super capacitor. The method comprises the following steps: adding one of the ion solution of AL<3+>, Li<+>, Zn<2+>, Cu<2+> and Pb<2+>, with the concentration being 3.0 to 4.0*10 <-2> mol / L in the KOH electrolyte of the super capacitor, and modifying carbon aerogel powder through the ion solution, so as to ensure that the ion is precipitated in the micropore of carbon aerogel, and to obtain the nano-porous carbon aerogel of the super capacitor. The method has the advantages that by ensuring that metal ion performs under potential deposition on the surface of the carbon aerogel, a faraday pseudocapacitor is provided for the electrochemical double-layer capacitor, the super capacitor prepared through the method is matched with a storage battery or other batters to form a composite battery, the problem that the existing battery cannot meet the requirements on high power, high capacity and fast charging at the same time is effectively solved, the composite battery can be applied to the fields with high requirements, such as spaceflight, military, communication and the like, and has a high application value.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, in particular to a method for preparing nanoporous carbon airgel of supercapacitors. Background technique [0002] In recent years, as a compact energy source with excellent performance, supercapacitors have become one of the most active research fields in the fields of materials, electronics, chemistry, physics and other multidisciplinary research in developed countries in the world. Its goal is to prepare high specific power, high specific capacity Electrode materials required for compact energy sources and electrolytes with wide electrochemical windows and high conductivity can be used to prepare large supercapacitors with ultra-high power and ultra-high capacity for power applications. At present, the mainstream material for manufacturing supercapacitors is activated carbon, but the specific capacity and specific surface area of ​​activated carbon are limited, and it is difficult to a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86
CPCY02E60/13H01G11/84H01G11/36H01G11/62
Inventor 关大勇
Owner TIANJIN DERUI FENGKAI NEW MATERIAL TECH