Porous carbon material and manufacturing method thereof and supercapacitor

Patent metadata

Field	Value
Publication number	US-9425000-B2
Application number	US-201213728700-A
Country	US
Kind code	B2
Filing date	Dec 27, 2012
Priority date	Oct 30, 2012
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

An embodiment provides a manufacturing method for a porous carbon material including: preparing a first solution including a surfactant, a carbon source material and a solvent; pouring the first solution into a silica sol aqueous solution to form a second solution; preparing a silicate aqueous solution; pouring the silicate aqueous solution into the second solution to form a third solution and to precipitate out an intermediate, wherein the intermediate includes the surfactant, the carbon source material and a silica template; performing a heating process on the intermediate to carbonize the intermediate; and removing the silica template of the carbonized intermediate to form a porous carbon material. Another embodiment of the disclosure provides a porous carbon material. The other embodiment provides a supercapacitor.

First claim

What is claimed is:

1. A porous carbon material, comprising:
a porous carbon structure having a plurality of macropores, a plurality of mesopores and a plurality of micropores,
wherein each of the macropores has a diameter larger than 50 nanometers, each of the mesopores has a diameter ranging from 2 nanometers to 50 nanometers, and each of the micropores has a diameter less than 2 nanometers,
wherein based on the total pore volume of the porous carbon structure, a distribution proportion of the pore volume of the macropores ranges from 10-25%, a distribution proportion of the pore volume of the mesopores ranges from 20-80%, and a distribution proportion of the pore volume of the micropores ranges from 0.01-20%,
wherein the mesopores have three main pore diameters, wherein the three main pore diameters are 2-4 nm, 5-15 nm and 20-50 nm, respectively,
wherein based on the total pore volume of the mesopores, a distribution proportion of the pore volume of the mesopores with the diameter of 2-4 nm ranges from 5-20%, a distribution proportion of the ore volume of the mesopores with the diameter of 5-15 nm ranges from 15-35%, and a distribution proportion of the pore volume of the mesopores with the diameter of 20-50 nm ranges from 20-40%.

2. The porous carbon material as claimed in claim 1 , wherein the average pore diameter of the porous carbon structure ranges from about 2 nm to about 15 nm.

3. A supercapacitor, comprising:
a first electrode;
a second electrode;
a separator film sandwiched between the first electrode and the second electrode;
a carbon electrode comprising a porous carbon material as claimed in claim 1 , wherein the carbon electrode is disposed between the first electrode and the separator film and between the second electrode and the separator film; and
an electrolytic solution disposed between the first electrode and the separator film and between the second electrode and the separator film to fill the macropores, the mesopores and the micropores of the porous carbon structure of the porous carbon material.

4. The supercapacitor as claimed in claim 3 , wherein the electrolytic solution is an ionic liquid electrolytic solution, an organic solvent electrolytic solution or an aqueous solution electrolytic solution.

5. The supercapacitor as claimed in claim 4 , wherein the ionic liquid electrolytic solution has an operating voltage ranging from about 3.6V to about 5V, the organic solvent electrolytic solution has an operating voltage ranging from about 2V to about 2.7V, and the aqueous solution electrolytic solution has an operating voltage ranging from about 1V to about 1.2V.

6. The supercapacitor as claimed in claim 3 , wherein the carbon electrode further comprises:
a binder mixed with the porous carbon material.

7. The supercapacitor as claimed in claim 6 , wherein the binder is a fluoro binder, and the weight ratio of the binder to the porous carbon material ranges from 5% to 15%.

Assignees

• Ind Tech Res Inst

Inventors

• Lin Yu-Ming
• Chen Tsung-Yi
• Lin Hong-Ping
• Lu wen-ling
• Pan Ssu-Jung

Classifications

• H01G11/44

  Raw materials therefor, e.g. resins or coal · CPC title

• C04B2235/5454

  nanometer sized, i.e. below 100 nm · CPC title

• C04B35/524

  obtained from polymer precursors, e.g. glass-like carbon material · CPC title

• C01P2006/16

  Pore diameter · CPC title

• H01G11/24 Primary

  characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor · CPC title