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Electrochemical cell electrode

A battery electrode, electrochemical technology, applied in the field of electrochemical batteries, can solve problems such as limitations

Inactive Publication Date: 2017-07-25
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ORR typically limits the performance of the reaction during operation of the fuel cell reaction

Method used

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  • Electrochemical cell electrode
  • Electrochemical cell electrode
  • Electrochemical cell electrode

Examples

Experimental program
Comparison scheme
Effect test

example 1-7 and comparative example A-D

[0103] Samples for Examples 1-7 and Comparative Examples A-D were prepared according to the general procedure described above for the general method for preparing nanostructured catalyst supports. The Comparative Example D support was annealed at a rate of 3 feet per minute (about 0.9 meters per minute). The initial thickness of the pigment material ("PR149") coating was varied as summarized in Table 1 (below). Next, the first side of the nanostructured catalyst support comprising whiskers (i.e., NSTF whiskers) was as described above according to the general method for coating nanoscale catalyst layers onto nanostructured catalyst support whiskers (Nanostructured Thin Films (NSTF)). is coated with a nanoscale catalyst layer. For all Examples 1-7 and Comparative Examples A-D, the same amount of catalyst containing catalyst (i.e., 0.10 mg-Pt / cm 2 The ternary PtCoMn, which has Pt 68 co 29 mn 3 atomic % of nominal composition) of Pt onto the whiskers. Next, the catalyst-coat...

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Abstract

The invention provides an electrochemical cell electrode. Electrochemical cell electrode (100) comprising a nanostructured catalyst support layer (102) having first and second generally opposed major sides (103,104). The first side (103) comprises nanostructured elements (106) comprising support whiskers (108) projecting away from the first side (103). The support whiskers (108) have a first nanoscopic electrocatalyst layer (110) thereon, and a second nanoscopic electrocatalyst layer (112) on the second side (104) comprising a precious metal alloy. Electrochemical cell electrodes (100) described herein are useful, for example, as a fuel cell catalyst electrode for a fuel cell.

Description

[0001] This application is a divisional application of an application whose PCT international filing date is December 19, 2012, PCT international application number is PCT / US2012 / 070634, national application number is 201280065196.1, and the invention name is "electrochemical battery electrode". [0002] Cross references to related patent applications [0003] This patent application claims the benefit of US Provisional Patent Application 61 / 581,351, filed December 29, 2011, the disclosure of which is incorporated herein by reference in its entirety. technical field [0004] The invention relates to the field of electrochemical batteries, in particular, the invention relates to an electrode of an electrochemical battery. Background technique [0005] Polymer electrolyte membrane (PEM) fuel cells for automotive applications need to meet stringent performance, durability, and cost requirements. Catalyst systems play an important role in determining the cost, performance, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88H01M4/92H01M8/1004
CPCH01M4/8657H01M4/8803H01M4/8807H01M4/881H01M4/8814H01M4/8871H01M4/921H01M4/925H01M8/1004H01M2008/1095Y02E60/50H01M4/9075
Inventor 马克·K·德比埃米·E·赫斯特
Owner 3M INNOVATIVE PROPERTIES CO