Properties of graphite-stainless steel composite in bipolar plates in simulated anode and cathode environments of PEM fuel cells

Włodarczyk, Renata

doi:10.2478/s13536-014-0229-6

Cited by 4 publications

(1 citation statement)

References 49 publications

(34 reference statements)

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“…In addition to high-performance single DAFC requiring advanced materials and optimized operating conditions, the rational design for DAFC stacks is also an important factor to attain a high-performance DAFC stack. The bipolar plate design is critical because it is the key component in bipolar fuel cell stacks [33][34][35][36] . As for the bipolar plate's material selection, the most popular materials are metals and graphite composites 37,38 .…”

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A High-Performance 75 W Direct Ammonia Fuel Cells Stack

Wang¹,

Zhao

Setzler³

et al. 2021

Preprint

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Ammonia can be directly used as fuel to generate electric energy in a low-temperature direct ammonia fuel cell (DAFC), making the DAFC an attractive option for zero-emission transportation. However, with a high-performance and durable DAFC still to be demonstrated, and with the remaining need to identify a suitable first market, the introduction of this technology has been delayed so far. Here, we report a high-performance DAFC stack enabled by a hydrophobic spinel cathode, which achieves the best combination of performance and durability reported to date. Peak power density of 410 mW cm-2 and continuous operation for 80 hours at 300 mA cm-2 were achieved for the first time in 5 cm2 DAFCs, and then successfully scaled up to 50 cm2. Five such cells were assembled into a 75 W DAFC stack using graphite bipolar plates, demonstrating stack performance at the level expected from the single cell tests. The best combination of performance and durability for the single cell and, particularly, the demonstration of the world’s first DAFC bipolar stack, constitute significant milestones in the development of DAFC technology. We also performed an in-depth techno-economic analysis of a 2 kW, 10 kWh DAFC system serving as power source for drones. Based on the DAFC performance demonstrated by us to date, such system can be a competitive power source over hydrogen fuel cells and Li-ion batteries.

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confidence: 99%