A rejuvenation process to enhance the durability of low Pt loaded polymer electrolyte membrane fuel cells

被引：19

作者：

Langlois, David A. ^{[1
]}

Lee, Albert S. ^{[1
]}

Macauley, Natalia ^{[1
]}

Maurya, Sandip ^{[1
]}

Hawley, Marilyn E. ^{[2
]}

Yim, Sung Dae ^{[3
]}

Kim, Yu Seung ^{[1
]}

机构：

[1] Los Alamos Natl Lab, MPA Mat Synth & Integrated Devices 11, Los Alamos, NM 87545 USA

[2] Los Alamos Natl Lab, Phys Chem & Appl Spect Grp, Los Alamos, NM 87545 USA

[3] Korea Inst Energy Res, Fuel Cell Lab, Daejeon 305343, South Korea

来源：

JOURNAL OF POWER SOURCES | 2018年 / 396卷

基金：

新加坡国家研究基金会;

关键词：

Fuel cells; Durability; Ionomer; Rejuvenation; Voltage cycling; NAFION MEMBRANES; IRREVERSIBLE THERMODYNAMICS; DEGRADATION MECHANISMS; OXYGEN REDUCTION; PFSA IONOMERS; WATER-UPTAKE; TRANSPORT; PERFORMANCE; DISPERSION; CATALYSTS;

D O I：

10.1016/j.jpowsour.2018.06.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An effective method to enhance the durability of polymer electrolyte membrane fuel cells (PEMFCs) is reported. PEMFC performance loss is mitigated by exposing the electrodes of fuel cells to dry nitrogen gas periodically at high temperature. This method extends the lifetime of fuel cells significantly compared to their non-treated counterparts. The impact of treatment temperature and exposure time on PEMFC durability is reported, using potential cycling accelerated stress tests. The enhanced durability is attributed to the suppression of "ionomer relaxation" that occurs under the nearly water saturated operating conditions of a PEMFC cathode.

引用

页码：345 / 354

页数：10

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