Replacing Chlorine with Hydrogen Chloride as a Possible Reactant for Synthesis of Titanium Carbide Derived Carbon Powders for High-Technology Devices

International Conference on Functional Materials and Nanotechnologies 2013

材料科学;物理学

Tallo, Indrek^1 ; Thomberg, Thomas^1 ; Jänes, Alar^1 ; Lust, Enn^1

Institute of Chemistry, University of Tartu, 14 a Ravila Str., 50411 Tartu, Estonia^1

关键词: Carbide derived carbon;    Electrode material;    Galvanostatic charge/discharge;    Gas-phase reactions;    Hydrogen chloride;    Porous structures;    Temperature range;    Titanium carbides (TiC);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/49/1/012018/pdf
DOI  :  10.1088/1757-899X/49/1/012018

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Micro- and mesoporous carbide-derived carbons were synthesized from titanium carbide (TiC) powder via gas phase reaction by using different reactants (Cl2and HCl) within the temperature range from 700 to 1100 °C. Analysis of XRD results show that TiC-derived carbons (TiC-CDC) consist mainly of graphitic crystallites. The first-order Raman spectra showed the graphite-like absorption peaks at ∼1577 cm1and the disorder-induced peaks at ∼1338 cm-1. The energy-related properties of supercapacitors based on 1 M (C2H5)3CH3NBF4in acetonitrile and carbide-derived carbons (TiC-CDC (Cl2) and TiC-CDC (HCl)) as electrode materials were also investigated using cyclic voltammetry, electrochemical impedance spectroscopy, galvanostatic charge/discharge and constant power methods. The Ragone plots for carbide-derived carbons prepared by using different reactants (Cl2, HCl) are quite similar and at high power loads TiC-CDC (Cl2) material synthesized at 900 °C, i.e. materials with optimal porous structure, deliver higher power at constant energy.