Electrochemical Oxidation of Surface Oxides to Partially Recover the Performance of Non-PGM Catalyst under Fuel Cell Operation

被引：8

作者：

Han, Taehee ^{[1
]}

Dale, Nilesh ^{[1
]}

Adjemian, Kev ^{[1
]}

Nallathamb, Vijayadurga ^{[2
]}

Barton, Scott ^{[2
]}

机构：

[1] Nissan Tech Ctr N Amer, Farmington Hills, MI 48331 USA

[2] Michigan State Univ, Chem Engn & Mat Sci, E Lansing, MI 48824 USA

来源：

POLYMER ELECTROLYTE FUEL CELLS 11 | 2011年 / 41卷 / 01期

关键词：

OXYGEN REDUCTION CATALYSTS; IRON; ELECTROCATALYSTS; PEMFCS;

D O I：

10.1149/1.3635762

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

An iron based metal-nitrogen-carbon (MNC) type oxygen reduction reaction catalyst was tested for in-situ polarization performance and durability. High open circuit voltage (OCV) of similar to 0.97 V and high activities were observed. Current density around 750 mA/cm(2) was obtained at 0.6 ViR-free/RHE and volumetric current density of 31 A/cm(3) was obtained at 0.8 ViR-free. A significant decrease in polarization after start-stop durability test was observed for this catalyst. An attempt was made to recover the in-situ performance after start-stop durability test by running the fuel cell at steady state current density. Partial performance recovery was achieved from the significantly degraded MNC based membrane electrode assembly (MEA). However, performance could not be recovered indefinitely due to eventual carbon loss.

引用

页码：2289 / 2296

页数：8

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