Surface analysis of supercapacitor electrodes after long-lasting constant current tests

International Conference on Functional Materials and Nanotechnologies 2013

材料科学;物理学

Jänes, Alar^1 ; Eskusson, Jaanus^1 ; Lust, Enn^1

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

关键词: Carbide derived carbon;    Charge/discharge cycle;    Chemical compositions;    ELectrochemical methods;    Electrode surfaces;    Partial dissolution;    Supercapacitor electrodes;    Surface chemical composition;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/49/1/012006/pdf
DOI  :  10.1088/1757-899X/49/1/012006

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

FIB-SEM, XPS, TOF-SIMS and electrochemical methods have been used for the characterisation of physical properties and chemical composition of microporous carbide derived carbon electrodes, prepared from TiC at 950 °C (noted as TiC-CDC) after 40000 charge/discharge cycles. Changes in surface chemical composition of TiC-CDC electrodes, includes partial contamination with reaction intermediates (F2, CHO-, CN-, organic radicals), and Al current collectors, like partial dissolution of Al from positively charged electrode and deposition of Al onto the negatively charged TiC-CDC electrode surface, have been analysed.