The Influence of Step-By-Step Air Exposition of the Zr-Mn-Cr-Ni-V Alloy on Cycle Life

  • Yu.М. Solonin Frantsevich Institute for Problems of Material Sciences
  • O.Z. Galiy Frantsevich Institute for Problems of Material Sciences, NAS Ukraine
  • A.V. Sameljuk Frantsevich Institute for Problems of Material Sciences, NAS Ukraine
  • L.О. Romanowa Frantsevich Institute for Problems of Material Sciences, NAS Ukraine
  • K.O. Graivoronska Frantsevich Institute for Problems of Material Sciences, NAS Ukraine
Keywords: Zr-alloy, hydrogenation, exposition in air

Abstract

In the course of the research it was determined that step-by-step air exposition of the Zr-Mn-Cr-Ni-V alloy (in the form of ingot and powder) facilitating the formation of concentration inhomogeneity significantly increases the cycle life of electrodes. An electrode compacted of step-by-step exposited ingot of the alloy demonstrates no loss of capacity during 190 cycles. With the decrease of porosity, caused by adding the nickel powder with significantly smaller particle size than that of particles of the alloy, or by increase of plasticizer content from 5 % to 10 %, the electrodes are being destroyed much sooner due to formation of more dense packing.
Based on the polarization curves of the researched alloy and manganese that demonstrate similar electrochemical behavior in non-oxidized state and stability in oxidized state, the conclusion is made that the increased stability and, as a consequence, the cycle life of the air-exposited alloy is mainly achieved due to manganese which is stably passive in oxidized state. 

References

I.P. Jain, J. Hydrogen Energy 34, 7368 (2009).

Yu. M. Solonin, L.L. Kolomiets, V.V. Skorokhod, Sorbent alloys for Ni-MH current sources (Academy of Sciences of Ukraine, Frantsevich Institute for Problems of Material Sciences, Kiev, 1993).

B.E. Paton, ICHMS-2001, Proceedings of the 7th International Conference on Hydrides (Alushta, 2001). P. 11.

J.J.G. Willems, K.H.J. Bushow, J. Less-Common Met. 129(1), 13 (1987).

N.P. Beetle, Course on corrosion and metal protection (Metallurgy, Moscow, 1968).

Z.P. Li, B.H. Liu, K. Hitaka, S. Suda, J. Alloys and compounds 330-332, 776 (2002).

S.L. Medway, C.A. Lucas, A. Kowal, R.Y. Nichols, D. Yoncjn, J. Electroanal. Chem. 587(1), 172 (2006).

Y.F. Zhu, H.G. Pan , G.Y. Wang, M.X. Gao, J.X. Ma, C.P. Chen, Q.D. Wang, J. Hydrogen Energy 26, 807 (2001).

G.Y. Wang; Y.H. Xu, H.G. Pan, Q.D. Wang, J. Hydrogen Energy 28, 499 (2003).

Published
2017-09-15
How to Cite
SoloninY., GaliyO., SameljukA., Romanowa L., & GraivoronskaK. (2017). The Influence of Step-By-Step Air Exposition of the Zr-Mn-Cr-Ni-V Alloy on Cycle Life. Physics and Chemistry of Solid State, 18(3), 313-320. https://doi.org/10.15330/pcss.18.3.313-320
Section
Scientific articles