Hydro-quebec

Jean-Pol Dodelet

Daniel Guay

Robert Schulz

Jacques Huot

Guy Lalande

Andre Van Neste

Guoxian Liang

Marie-Chantal Denis

Leached nanocrystalline materials having a high specific surface are particularly useful for storing hydrogen or as catalysts or electrocatalysts in the manufacture electrodes, especially for fuel cells. Such materials can be manufactured by preparing a nanocrystalline material consisting of a metastable composite or alloy of at least two different chemical elements. To be nanocrystalline, this material must have a crystalline structure with the grain size lower than 100 nm. Then, the so prepared nanocrystalline material can be subjected to a leaching treatment in order to eliminate partially or totally one of the elements of the composite or alloy. This leaching results in nanocrystalline materials having a porous structure and, thereby, the requested high specific surface.

Leached nanocrystalline materials process for manufacture of the same,

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Jean-Pol Dodelet