Nitrogen-doped carbon aerogels for electrical energy storage

Patent metadata

Field	Value
Publication number	US-2017304795-A1
Application number	US-201715648290-A
Country	US
Kind code	A1
Filing date	Jul 12, 2017
Priority date	Aug 6, 2015
Publication date	Oct 26, 2017
Grant date	—

Abstract

Disclosed here is a composition comprising a nitrogen-doped carbon aerogel, wherein the nitrogen-doped carbon aerogel comprises a polymerization product of formaldehyde and at least one nitrogen-containing resorcinol analog. Also disclosed is a supercapacitor comprising the nitrogen-doped carbon aerogel.

First claim

What is claimed is:

1 . A composition comprising a nitrogen-doped carbon aerogel, wherein the nitrogen-doped carbon aerogel comprises a polymerization product of formaldehyde and at least one nitrogen-containing resorcinol analog.

2 . The composition of claim 1 , wherein the resorcinol analog is selected from (a) an aromatic compound comprising a nitrogen-containing ring linked to at least two hydroxyl groups and (b) an aromatic compound comprising a benzene ring or nitrogen-containing ring linked to at least one hydroxyl group and at least one amine group, wherein the nitrogen-containing ring is selected from the group consisting of pyridine, pyrazine, pyrimidine, pyridazine, pyrrole, pyrazole and imidazole.

3 . The composition of claim 1 , wherein the resorcinol analog comprises pyridinediol.

4 . The composition of claim 3 , wherein the pyridinediol comprises 2,3-pyridinediol, 2,4-pyridinediol, 2,5-pyridinediol, 3,4-pyridinediol, and/or 3,5-pyridinediol.

5 . The composition of claim 1 , wherein the resorcinol analog comprises aminophenol.

6 . The composition of claim 5 , wherein the aminophenol comprises 2-aminophenol, 3-aminophenol, and/or 4-aminophenol.

7 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel consists essentially of the polymerization product of formaldehyde and the at least one nitrogen-containing resorcinol analog.

8 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel is substantially free of a polymerization product of formaldehyde and resorcinol.

9 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel has a nitrogen content of about 4 wt. % or more.

10 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel has a nitrogen content of about 8 wt. % or more.

11 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel has a surface area of about 100 m 2 /g or more.

12 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel has a surface area of about 300 m 2 /g or more.

13 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel has a density of about 0.5 g/ml or less.

14 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel has a density of about 0.3 g/ml or less.

15 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel has a specific capacitance of about 50 F/g or more.

16 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel has a specific capacitance of about 80 F/g or more.

17 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel has an areal capacitance of about 20 μF/cm 2 or more.

18 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel has an areal capacitance of about 25 μF/cm 2 or more.

19 . The composition of claim 1 , wherein the nitrogen-doped carbon aerogel is in a form of a monolith having at least one dimension of 100 microns or more.

20 . A supercapacitor comprising the composition of claim 1 .

Assignees

• L Livermore Nat Security Llc

Inventors

• Campbell Patrick
• Montalvo Elizabeth
• Baumann Theodore F
• Biener Juergen
• Merrill Matthew
• Reed Eric W
• Worsley Marcus A

Classifications

• H01G11/34

  characterised by carbonisation or activation of carbon · CPC title

• Y02E60/13

  Energy storage using capacitors · CPC title

• C01B32/00

  Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) · CPC title

• H01G11/36

  Nanostructures, e.g. nanofibres, nanotubes or fullerenes · CPC title

• H01G11/24

  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