Journal article
Room‐Temperature Carbide‐Derived Carbon Synthesis by Electrochemical Etching of MAX Phases
Angewandte Chemie (International ed.), v 53(19), pp 4877-4880
05 May 2014
PMID: 24692047
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Porous carbons are widely used in energy storage and gas separation applications, but their synthesis always involves high temperatures. Herein we electrochemically selectively extract, at ambient temperature, the metal atoms from the ternary layered carbides, Ti3AlC2, Ti2AlC and Ti3SiC2 (MAX phases). The result is a predominantly amorphous carbide‐derived carbon, with a narrow distribution of micropores. The latter is produced by placing the carbides in HF, HCl or NaCl solutions and applying anodic potentials. The pores that form when Ti3AlC2 is etched in dilute HF are around 0.5 nm in diameter. This approach forgoes energy‐intensive thermal treatments and presents a novel method for developing carbons with finely tuned pores for a variety of applications, such as supercapacitor, battery electrodes or CO2 capture.
A mild route to carbon: The formation of carbide‐derived carbons (CDCs) by electrochemically induced extraction of metal atoms from ternary carbides at room temperature is demonstrated. This approach eschews high temperatures or the use of chlorine gas and allows for the formation of carbon films with quite narrow pore size distributions.
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Details
- Title
- Room‐Temperature Carbide‐Derived Carbon Synthesis by Electrochemical Etching of MAX Phases
- Creators
- Maria R LukatskayaJoseph HalimBoris DyatkinMichael NaguibYulia S BuranovaMichel W BarsoumYury Gogotsi
- Publication Details
- Angewandte Chemie (International ed.), v 53(19), pp 4877-4880
- Publisher
- WILEY‐VCH Verlag; Weinheim
- Number of pages
- 4
- Grant note
- U.S. Department of Energy (ER46473)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000335202700020
- Scopus ID
- 2-s2.0-84899939228
- Other Identifier
- 991014877945704721
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- Web of Science research areas
- Chemistry, Multidisciplinary