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Polymer Electrolyte Fuel Cell Durability (Paperback, Softcover reprint of hardcover 1st ed. 2009)
Loot Price: R3,351
Discovery Miles 33 510
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Polymer Electrolyte Fuel Cell Durability (Paperback, Softcover reprint of hardcover 1st ed. 2009)
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This book covers a significant number of R&D projects,
performed mostly after 2000, devoted to the understanding and
prevention of performance degradation processes in polymer
electrolyte fuel cells (PEFCs). The extent and severity of
performance degradation processes in PEFCs were recognized rather
gradually. Indeed, the recognition overlapped with a significant
number of industrial dem- strations of fuel cell powered vehicles,
which would suggest a degree of technology maturity beyond the
resaolution of fundamental failure mechanisms. An intriguing
question, therefore, is why has there been this apparent delay in
addressing fun- mental performance stability requirements. The
apparent answer is that testing of the power system under fully
realistic operation conditions was one prerequisite for revealing
the nature and extent of some key modes of PEFC stack failure. Such
modes of failure were not exposed to a similar degree, or not at
all, in earlier tests of PEFC stacks which were not performed under
fully relevant conditions, parti- larly such tests which did not
include multiple on-off and/or high power-low power cycles typical
for transportation and mobile power applications of PEFCs.
Long-term testing of PEFCs reported in the early 1990s by both Los
Alamos National Laboratory and Ballard Power was performed under
conditions of c- stant cell voltage, typically near the maximum
power point of the PEFC.
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