Increase of porosity by combining semi-carbonization and KOH activation of formaldehyde resins to prepare high surface area carbons for supercapacitor applications

Increase of porosity by combining semi-carbonization and KOH activation of formaldehyde resins to... Article history: A series of porous carbon samples were prepared by combining a semi-carbonization process of acidic Received 23 April 2017 polymerized phenol-formaldehyde resins and a following chemical activation with KOH used in different Received in revised form 6 July 2017 ratios to increase specific surface area, micropore content and pore sizes of the carbons which is favourable Accepted 14 August 2017 for supercapacitor applications. Samples were characterized by nitrogen physisorption, powder X-ray Available online 24 August 2017 diffraction, Raman spectroscopy and scanning electron microscopy. The results show that the amount of KOH, combined with the semi-carbonization step had a remarkable effect on the specific surface area Keywords: 2 −1 2 −1 3 −1 (up to S : 3595 m g and S : 2551 m g ), pore volume (0.60–2.62 cm g ) and pore sizes (up BET DFT Phenol-formaldehyde resin to 3.5 nm). The carbons were tested as electrode materials for electrochemical double layer capacitors Supercapacitor (EDLC) in a two electrode setup with tetraethylammonium tetrafluoroborate in acetonitrile as electrolyte. Activated carbon The prepared carbon material with the largest surface area, pore volume and pore sizes exhibits a high KOH activation −1 −1 −1 Electrode material specific capacitance http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Increase of porosity by combining semi-carbonization and KOH activation of formaldehyde resins to prepare high surface area carbons for supercapacitor applications

Loading next page...
 
/lp/elsevier/increase-of-porosity-by-combining-semi-carbonization-and-koh-8dUMwMTYEE
Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2017.08.095
Publisher site
See Article on Publisher Site

Abstract

Article history: A series of porous carbon samples were prepared by combining a semi-carbonization process of acidic Received 23 April 2017 polymerized phenol-formaldehyde resins and a following chemical activation with KOH used in different Received in revised form 6 July 2017 ratios to increase specific surface area, micropore content and pore sizes of the carbons which is favourable Accepted 14 August 2017 for supercapacitor applications. Samples were characterized by nitrogen physisorption, powder X-ray Available online 24 August 2017 diffraction, Raman spectroscopy and scanning electron microscopy. The results show that the amount of KOH, combined with the semi-carbonization step had a remarkable effect on the specific surface area Keywords: 2 −1 2 −1 3 −1 (up to S : 3595 m g and S : 2551 m g ), pore volume (0.60–2.62 cm g ) and pore sizes (up BET DFT Phenol-formaldehyde resin to 3.5 nm). The carbons were tested as electrode materials for electrochemical double layer capacitors Supercapacitor (EDLC) in a two electrode setup with tetraethylammonium tetrafluoroborate in acetonitrile as electrolyte. Activated carbon The prepared carbon material with the largest surface area, pore volume and pore sizes exhibits a high KOH activation −1 −1 −1 Electrode material specific capacitance

Journal

Applied Surface ScienceElsevier

Published: Jan 1, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off