Effect of carbon nanotubes support in improving the performance of mixed electrocatalysts for hydrogen evolution

Perica Paunović, Aleksandar T. Dimitrov, Orce Popovski, Dragan Slavkov, Sveto Hadzi Jordanov


The effect of using multiwalled carbon nanotubes (MWCNTs) vs. traditional carbon materials (as e.g., Vulcan XC-72) as supports for mixed non-platinum catalysts for hydrogen evolution was studied. Intrinsic changes in catalyst’s structure, surface and activity for hydrogen evolution were registered. It was found that MWCNTs significantly improve the activity of the catalysts as a result of (i) increase of the real surface area of the catalyst, (ii) improving the electrical conductivity of the electrode, (iii) better dispersion of active catalytic centers over the electrode surface and (iv) geometric nature of the nanotubes. This effect is most pronounced in the case of Ni-based catalyst, where the overpotential for hydrogen evolution was lowered by as much as 85 mV at a current density of 60 mA·cm–2 in alkaline electrolyte. The corresponding lowering of overpotential in the Co-based system was 35 mV.


hydrogen evolution; mixed electrocatalysts; carbon black; multiwalled carbon nanotubes (MWCNTs)

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L. Brewer, Phase Stability in Metals and Alloys, in P. Rudman, J. Stringer and R. I. Haffee (Eds.), McGraw- Hill, New York, 1967, p. 39–61.

M. M. Jakšić, Brewer intermetallic phases as synergetic electrocatalysts for hydrogen evolution, Mat. Chem. and Phys, 22, 1–26 (1989).

K. Kinoshita, Carbon, Electrochemical and Physicochemical Properties, John Wiley & Sons, New York, USA, 1988, p. 76.

S. Iijima, Helical microtubules of graphitic carbon, Nature, 354, 56–58 (1991).

A. T. Dimitrov, P. Paunović, Carbon nanotubes as a possible material for catalyst carrier, The Solar Hydrogen Energy Conversion Cycle, A ROSTE–UNESCO Workshop, Sofia, November 26, 2004.

K. Lee, J. Zhang, H. Wang, D. P. Wilkinson, Progress in the syntesis of carbon nanotube- and nanofiber-supported Pt electrocatalysts for PEM fuel cell catalysis, J. Appl. Electrchem., 36, 507–522 (2006).

P. Paunović, O. Popovski, A. T. Dimitrov, D. Slavkov, E. Lefterova, S. Hadži Jordanov, Improvement of performances of complex non-platinum electrode materials for hydrogen evolution, Electrochimica Acta, 52, 1610–1618 (2006).

B. Marsan, N. Fradette, Beaudoin, Physicochemical and electrochemical properties of CuCo2O4 electrodes prepared by thermal decomposition for oxygen evolution, J. Electrochem. Soc., 139, 1889–1896 (1992).

L. M. Da Silva, L. A. De Faria, J. F. C. Boodts, Determination of the morphology factor of oxide layers, Electrochimica Acta, 47, 395–403 (2001).

BG patent Appl. No 38581.

S. Hadži Jordanov, P. Paunović, O. Popovski, A. Dimitrov, D. Slavkov, Electrocatalysts in the last 30 years − from precious metals to cheaper but sophisticated complex systems, Bull. Chem. Technol. Macedonia, 23, 2, 101–112 (2004).

J. McBreen, in Modern Aspects of Electrochemistry, Vol. 21, R. E. White, J. O’M Bockris, B. E. Conway (Eds)., Plenum Press, New York, 1990, p. 29.

W. K. Behl, J. E. Toni, Anodic oxidation of cobalt in potassium hydroxide electrolytes, J. Electroanal. Chem., 31, 63–75 (1971).

N. Sato, T. Ohtsuka, Anodic Oxidation of Cobalt in Neutral and Basic Solution, J. Electrochem. Soc., 125, 1735– 1740 (1978).

L. D. Burke, O. J. Murphy, Electrochromic behaviour of oxide films grown on cobalt and manganese in base, J. Electroanal. Chem., 109, 373–377 (1980).

P. Paunović, O. Popovski, A. T. Dimitrov, D. Slavkov, E. Lefterova, S. Hadži Jordanov, Study of structural and electrochemical characteristics of Co-based hypo-hyper d-electrocatalysts for hydrogen evolution, Electrochimica Acta, in press, available on-line from February 2nd 2006.

P. Paunović, O. Popovski, S. Hadži Jordanov, A. Dimitrov, D. Slavkov, Modification for improvement of catalysts materials for hydrogen evolution, J. Serb. Chem. Soc., 71 (2), 149–165 (2006).

DOI: http://dx.doi.org/10.20450/mjcce.2007.262


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