Method for preparing highly-dispersible radical scavenger metal oxide-ionomer nanocomposite by using self-assembly process and fuel cell comprising nanocomposite prepared thereby
AssigneeDankook University Cheonan Campus Industry Academic Cooperation Foundation
InventorChang Hyun Lee
Life of this patent
Estimating the term…
Abstract
The present invention relates to: a method for preparing a nanocomposite of an ionomer and a metal oxide acting as a radical scavenger; and a fuel cell comprising a nanocomposite prepared thereby and, more specifically, to: a method for preparing a highly-dispersible radical scavenger metal oxide-ionomer nanocomposite which can be redispersed to the size of nanoparticles in an aqueous alcohol solution or an ionomer solution; and a membrane electrode assembly and fuel cell comprising a nanocomposite prepared thereby.
Claims9
A method for preparing a highly-dispersable radical scavenger metal oxide-ionomer nanocomposite in which a metal oxide nanoparticle and an ionomer are dispersed in a nanocomposite form through a self-assembly process, the method comprising the steps of:
- a) dissolving a radical scavenger metal oxide precursor in a perfluorinated sulfonic acid ionomer dispersion;
- b) adding sodium hydroxide or ammonia aqueous solution to the perfluorinated sulfonic acid ionomer dispersion to form a radical scavenger metal oxide-ionomer nanocomposite in an in-situ manner;
- and
- c) separating and drying the radical scavenger metal oxide-ionomer nanocomposite to obtain a powder state of the radical scavenger metal oxide-ionomer nanocomposite.
Dependencies are inferred from the claim text.