Unlock instant, AI-driven research and patent intelligence for your innovation.

Core-shell metal nanoparticles, and method for producing core-shell metal nanoparticles

A technology of metal nanoparticles and manufacturing methods, which is applied in the direction of metal material coating process, superimposed layer plating, structural parts, etc., and can solve problems such as battery voltage drop

Inactive Publication Date: 2012-12-26
TOYOTA JIDOSHA KK
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, especially when platinum alloys are used, metals other than platinum present on the surface of the platinum are leached out, and therefore, there is a disadvantage that the battery voltage drops when the fuel cell is operated for a long time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Core-shell metal nanoparticles, and method for producing core-shell metal nanoparticles
  • Core-shell metal nanoparticles, and method for producing core-shell metal nanoparticles
  • Core-shell metal nanoparticles, and method for producing core-shell metal nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] In this specification, in order to more clearly illustrate the difference from the prior art, the method for manufacturing the core-shell type metal nanoparticles of the present invention will be described first, and then the core-shell type metal nanoparticles of the present invention will be described.

[0048] 1. Manufacturing method of core-shell metal nanoparticles

[0049] The method for producing core-shell type metal nanoparticles of the present invention is used to produce core-shell type metal nanoparticles having a core portion containing a core metal material and an outer shell portion covering the core portion, and is characterized by having at least: A step of core particles of a core metal material; a first coating step of using the core particles as the core part and covering the core part with a first shell metal material; and using the first shell metal material and the second shell metal material At least any one of at least one of which is a second coatin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

Disclosed are: core-shell metal nanoparticles having a high coverage factor of the shell on the core; and a method for producing core-shell metal nanoparticles. The core-shell metal nanoparticles are provided with a core section, and a shell section that covers said core section, and are characterized by: the aforementioned core section containing a metal core material selected from the group consisting of an elemental metal and an alloy; and the aforementioned shell section containing an alloy comprising a first metal shell material and a second metal shell material.

Description

Technical field [0001] The invention relates to a core-shell type metal nanoparticle with a high shell coating rate for the core and a method for manufacturing the core-shell type metal nanoparticle. Background technique [0002] The fuel cell directly converts chemical energy into electrical energy by supplying fuel and oxidant to two electrically connected electrodes and electrochemically causing oxidation of the fuel. Unlike thermal power generation, fuel cells are not restricted by the Carnot cycle, and thus show high energy conversion efficiency. Generally, a fuel cell is constructed by stacking a plurality of single cells having a basic structure of a membrane-electrode assembly formed by sandwiching an electrolyte membrane between a pair of electrodes. [0003] In the past, platinum or platinum alloys have been used as electrode catalysts for fuel cells. However, particularly when platinum alloys are used, metals other than platinum that are present on the platinum surface...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/02C23C18/31C25D5/00H01M4/88H01M4/90
CPCH01M4/921H01M4/926C25D3/50C25D5/10C25D3/62C25D7/00C23C18/54C23C28/02C23C28/023Y02E60/50C25D7/006C23C18/1651C25D3/48C23C18/31C25D5/617
Inventor 新井龙哉竹广直树饭尾敦雄木村纮子
Owner TOYOTA JIDOSHA KK