Process for coating cobalt nanoparticles with copper and copper oxide
AssigneeTeknologian tutkimuskeskus VTT Oy
InventorsAri Auvinen, Jorma Jokiniemi, Pipsa Mattila, Unto Tapper
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Abstract
The present invention relates to a process for forming cobalt nanoparticles and coating them with copper or copper oxide, in which process a copper salt is mixed to a cobalt salt so that the formed salt mixture obtains a cobalt:copper ratio of >1:1, and a reduction is carried out with a reducing gas, whereby nanoparticles are formed while a coating is formed onto their surface.
Claims11
A process for forming cobalt nanoparticles and coating them with copper or copper oxide, comprising the steps of:
- mixing a copper salt into a cobalt salt, wherein the formed salt mixture obtains a cobalt:copper ratio of >1:1 by mass, and
- carrying out a reduction with a reducing gas, whereby the nanoparticles are formed at the same time as a coating is formed on their surface.
Coated cobalt nanoparticles coated with copper or copper oxide, comprising being manufactured by mixing a copper salt into a cobalt salt, wherein the formed salt mixture obtains a cobalt:copper ratio >1:1 by mass, carrying out a reduction with a reducing gas, whereby the nanoparticles are formed at the same time as a coating on their surface, and wherein the cobalt nanoparticles have a cobalt:copper ratio of >1:1 by mass and their coating is uniform.
Dependencies are inferred from the claim text.