caa a22 4500 475814835 CHVBK 20180406123807.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1023/A:1003813210270 doi (NATIONALLICENCE)springer-10.1023/A:1003813210270 Tungsten carbide-based electrochemical sensors for hydrogen determination in gas mixtures [Elektronische Daten] [V. Nikolova, I. Nikolov, P. Andreev, V. Najdenov, T. Vitanov] An amperometric study of gas-diffusion electrodes (GDE) catalysed by two types of tungsten carbide, WC(1) and WC(2), which differ considerably in their specific surface area (0.5 and 6 m2 g−1), was carried out. The H2-air gas mixture (H2 1-4%) measurements show that for this range of hydrogen concentration the hydrogen limiting diffusion current (i d(H2)) may be attained so that a curve of limiting current density against hydrogen concentration can be obtained. The response and stability of the electrode performance were compared to those of platinum catalysed GDEs. The most promising for use in amperometric hydrogen sensing is the WC(1) catalyst of small specific surface area. Electrodes catalysed with this catalyst show inferior response time in comparison to electrodes catalysed with the other two catalysts (WC(2) and Pt) but their overall stability is much better. Kluwer Academic Publishers, 2000 hydrogen nationallicence sensor nationallicence tungsten carbide nationallicence Nikolova V. Central Laboratory of Electrochemical Power Sources, Bulgarian Academy of Sciences, Acad. G. Bonchev St. Bl. 10, 1113, Sofia, Bulgaria aut Nikolov I. Central Laboratory of Electrochemical Power Sources, Bulgarian Academy of Sciences, Acad. G. Bonchev St. Bl. 10, 1113, Sofia, Bulgaria aut Andreev P. Central Laboratory of Electrochemical Power Sources, Bulgarian Academy of Sciences, Acad. G. Bonchev St. Bl. 10, 1113, Sofia, Bulgaria aut Najdenov V. Central Laboratory of Electrochemical Power Sources, Bulgarian Academy of Sciences, Acad. G. Bonchev St. Bl. 10, 1113, Sofia, Bulgaria aut Vitanov T. Central Laboratory of Electrochemical Power Sources, Bulgarian Academy of Sciences, Acad. G. Bonchev St. Bl. 10, 1113, Sofia, Bulgaria aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/6(2000-06-01), 705-710 0021-891X 30:6<705 2000 30 10800 https://doi.org/10.1023/A:1003813210270 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003813210270 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nikolova V. Central Laboratory of Electrochemical Power Sources, Bulgarian Academy of Sciences, Acad. G. Bonchev St. Bl. 10, 1113, Sofia, Bulgaria aut NATIONALLICENCE 700 1- Nikolov I. Central Laboratory of Electrochemical Power Sources, Bulgarian Academy of Sciences, Acad. G. Bonchev St. Bl. 10, 1113, Sofia, Bulgaria aut NATIONALLICENCE 700 1- Andreev P. Central Laboratory of Electrochemical Power Sources, Bulgarian Academy of Sciences, Acad. G. Bonchev St. Bl. 10, 1113, Sofia, Bulgaria aut NATIONALLICENCE 700 1- Najdenov V. Central Laboratory of Electrochemical Power Sources, Bulgarian Academy of Sciences, Acad. G. Bonchev St. Bl. 10, 1113, Sofia, Bulgaria aut NATIONALLICENCE 700 1- Vitanov T. Central Laboratory of Electrochemical Power Sources, Bulgarian Academy of Sciences, Acad. G. Bonchev St. Bl. 10, 1113, Sofia, Bulgaria aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/6(2000-06-01), 705-710 0021-891X 30:6<705 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer