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Hierarchically Structured, Highly Porous Nickel Synthesized in Sintering–Evaporation Process from a Metal Nanopowder and a Space Holder

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Abstract

Permeable (~70% porosity) nickel with a pronounced hierarchical structure was synthesized by powder metallurgy methods in sintering–evaporation process from a nickel nanopowder and an ammonium bicarbonate micropowder as a space holder. The obtained porous nickel contained pores of three spatial scales: macropores (30–50 μm in size), their connecting windows (5–10 μm), and interparticle micropores (less than 1 μm) in the walls of macropores. The produced material is characterized by a network of interpenetrating macropores and by a developed surface of their walls consisting of several layers of sintered nickel nanoparticles.

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ACKNOWLEDGMENTS

This work was supported by the Russian Science Foundation (project no. 17–03–00337-a) and the Presidium of the Russian Academy of Sciences (program no. 34P). The electron microscopy studies were supported by State Assignment no. 007–00129–18–00.

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Authors and Affiliations

  1. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Moscow, Russia

    A. G. Gnedovets, V. A. Zelenskii, A. B. Ankudinov &  M. I. Alymov

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  1. A. G. Gnedovets
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  2. V. A. Zelenskii
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  3. A. B. Ankudinov
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  4. M. I. Alymov
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Correspondence to M. I. Alymov.

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Translated by V. Glyanchenko

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Gnedovets, A.G., Zelenskii, V.A., Ankudinov, A.B. et al. Hierarchically Structured, Highly Porous Nickel Synthesized in Sintering–Evaporation Process from a Metal Nanopowder and a Space Holder. Dokl Chem 484, 64–67 (2019). https://doi.org/10.1134/S0012500819020022

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  • DOI: https://doi.org/10.1134/S0012500819020022

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