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US 7,022,642 B2Granted
Electrocatalyst and method of manufacturing the same
AssigneeNissan Motor Co., Ltd.
InventorShinji Yamamoto
Life of this patent
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Abstract
An electrocatalyst contains a conductive support which loads a noble metal thereon. In the electrocatalyst of the present invention, the noble metal is formed by adding a reducing agent for an ion of the noble metal to a reversed micellar solution containing an aqueous solution of the noble metal ion, and the noble metal is loaded with a mean particle diameter ranging from 1 to 10 nm.
Claims30
A method of manufacturing an electrocatalyst, comprising:
- preparing a reversed micellar solution containing an aqueous solution of a noble metal ion;
- reducing the noble metal ion to a noble metal by adding a reducing agent to the reversed micellar solution;
- and
- adding a conductive support to the reversed micellar solution,
- wherein the reducing agent is added as a reversed micellar solution containing an aqueous solution of the reducing agent.
2 more elements
A method of manufacturing an electrocatalyst, comprising:
- preparing a first reversed micellar solution containing an aqueous solution of a noble metal ion;
- reducing the noble metal ion to a noble metal by adding a reducing agent to the first reversed micellar solution;
- preparing a second reversed micellar solution containing an aqueous solution of a transition metal ion;
- preparing a transition metal from the transition metal ion by adding a precipitant to the second reversed micellar solution;
- and
- loading a complex metal particle composed of the noble metal and the transition metal on a conductive support.
3 more elements
A method of manufacturing an electrocaralyst, comprising:
- preparing a reversed micellar solution containing an aqueous solution of a noble metal ion;
- reducing the noble metal ion to a noble metal by adding a reducing agent to the reversed micellar solution;
- rinsing off an attachment on a surface of a conductive support with an alkaline solution;
- and
- adding the support to the reversed micellar solution.
2 more elements
Dependencies are inferred from the claim text.