Pt catalyst protected by graphene nanopockets enables lifetimes of over 200,000 h for heavy-duty fuel cell applications
Source abstract
Abstract
Proton exchange membrane fuel cells feature considerable scalability advantages over lithium-ion batteries for heavy-duty-vehicle applications. The different driving behaviours and operating conditions of heavy-duty vehicles pose challenging requirements, particularly on fuel cell lifetime and efficiency. Here we report the design of a graphene-nanopocket-protected, pore-confined and electrochemically accessible Pt nanocatalyst supported on Ketjenblack carbon for heavy-duty-vehicle applications. The membrane electrode assembly made from these nanocatalysts delivers an initial mass activity of 0.74 A mgPt-1 and a high rated power density of 1.08 W cm-2, as well as extraordinary long-term durability with an ultrasmall rated power loss of 1.1% after 90,000 aggressive square-wave cycles. The remarkable activity and durability throughout the operation conditions promise an unprecedentedly long fuel cell lifetime of over 200,000 h and high peak efficiency of 71.9%, making it highly attractive for emerging heavy-duty fuel cell applications.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advancements in Battery Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (49)
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