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US 11,539,054 B2Granted
Method of manufacturing catalyst ink free of eluted transition metal for fuel cell
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsDae Yong Son, Dong Hwan Yoon, Yoon Hwan Cho
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Abstract
Disclose is a method of manufacturing catalyst ink for a fuel cell, and particularly the method includes removing eluted transition metal from a noble-metal/transition-metal alloy catalyst.
Claims10
A method of manufacturing catalyst ink for a fuel cell, comprising:
- admixing 1) an alloy catalyst comprising a noble metal and a transition metal and 2) polymer particles, whereby an aggregate comprising i) the transition metal and ii) polymer particles forms,
- wherein an admixture is provided comprising an alloy catalyst comprising a noble metal and a transition metal, an ionomer and a solvent;
- and
- the admixture and the polymer particles to form the aggregate comprising 1) the transition metal eluted from the alloy catalyst and 2) the polymer particles,
- wherein the aggregate is removed by filtration wherein the polymer particles comprise a chelating resin.
2 more elements
Dependencies are inferred from the claim text.