Characterisation of embroidered 3D electrodes by use of anthraquinone-1,5-disulfonic acid as probe system

摘要

New electrode designs are required for electrochemical applications such as batteries or fuel cells. Embroidered 3D Cu porous electrodes with a geometric surface of 100 cm~2 are presented and characterised by means of the anthraquinone-1,5-disfulfonic acid (AQDS~(2-)) redox system in alkaline solution. The electrochemical behaviour of the 3D electrode is established by the comparison of cyclic voltam-metry responses using a micro cell and a 100 cm~2 plane Cu-plate electrode. Dependencies of the peak currents and peak-to-peak potential separation on scan rate and AQDS~(2-) concentration are studied. The AQDS~(2-) characterisation is also performed by means of spectroelectrochemical experiments.