Simulations and analysis of high-temperature proton exchange membrane fuel cell and its cooling system to power an automotive vehicle

Zhu, Ruizhi; Xing, Lu; Tu, Zhengkai

doi:10.1016/j.enconman.2021.115182

Cited by 29 publications

(8 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Now, H 2 energy has received wide attention owing to its superiorities: lofty energy density, the product of reaction being only water, a variety of sources, etc. Especially, the latest progress of proton exchange membrane fuel cells (PEMFCs) has vastly accelerated the applications of H 2 energy, which is considered the most promising transportation application system . As a key component of PEMFCs, convenient preparation and performance optimization of PEMs are the goals that most researchers have been pursuing. , …”

Section: Introductionmentioning

confidence: 99%

“…Especially, the latest progress of proton exchange membrane fuel cells (PEMFCs) has vastly accelerated the applications of H 2 energy, which is considered the most promising transportation application system. 2 As a key component of PEMFCs, convenient preparation and performance optimization of PEMs are the goals that most researchers have been pursuing. 3,4 According to the membrane structure differences, PEMs are divided into organic membranes, inorganic membranes, and organic−inorganic composite membranes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ultrahigh Proton Conductivities of Postmodified Hf(IV) Metal–Organic Frameworks and Related Chitosan-Based Composite Membranes

Chen

Zhang

Xiao

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Recently, researchers have focused on preparing and studying proton exchange membranes. Metal−organic frameworks (MOFs) are candidates for composite membrane fillers due to their high crystallinity and structural characteristics, and Hf-based MOFs have attracted our attention with their high porosity and high stability. Therefore, in this study, Hf-based MOFs were doped into a costeffective chitosan matrix as fillers to fabricate composite films having excellent proton conductivity (σ). First, the nanoscale MOFs Hf-UiO-66-(OH) 2 (1) and Hf-UiO-66-NH 2 (2) were chemically modified by a ligand design strategy to obtain SA-1 and CBD-2 bearing free −COOH units. The proton conductivities of SA-1 and CBD-2 under optimal test conditions reached 1.23 × 10 −2 and 0.71 × 10 −2 S cm −1 . After that, we prepared composite membranes CS/SA-1 and CS/ CBD-2 by the casting method; tests revealed that the introduction of MOFs improved the stabilities and σ values of the membranes, and their best σ could reach above 10 −2 S cm −1 under 100 °C/98% RH. Further structural characterization and activation energy calculation revealed the conductive mechanism of the composite films. This investigation not only proposes a novel chemical modification method for optimizing the σ of MOFs but also promotes the development of MOF-doped composite membranes and provides a basis for future applications of MOFs in fuel cells.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultrahigh Proton Conductivities of Postmodified Hf(IV) Metal–Organic Frameworks and Related Chitosan-Based Composite Membranes

Chen

Zhang

Xiao

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…These devices are particularly attractive for home-based power generation, transportation and other portable applications. 6 Some of their appealing features include high efficiency, rapid start-up, and a higher tolerance to impurities in the reactants. 6 This last point is especially remarkable, since the HT-PEMFCs studied in this work used reformate gas as a fuel.…”

Section: Introductionmentioning

confidence: 99%

“…6 Some of their appealing features include high efficiency, rapid start-up, and a higher tolerance to impurities in the reactants. 6 This last point is especially remarkable, since the HT-PEMFCs studied in this work used reformate gas as a fuel. Reformate is a hydrogen-rich gas originating from the steam reforming of carbohydrates, and contains traces of CO. CO is an impurity that is known to adsorb strongly onto the surface of Pt, poisoning it and impacting the overall performance of the cell.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of functional layers thinning of high temperature polymer electrolyte membrane fuel cells after long term operation

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The cooling system plays a crucial role, since working temperatures can significantly affect the final energy consumption of the vehicle. When using FCEV the main component (the cell) needs to operate at specific temperature, depending on fuel cell type and materials [31,32].…”

Section: Introductionmentioning

confidence: 99%

Comparison on the energy absorbed of volumetric and centrifugal pumps for automotive engine cooling

Giovine

Mariani

Bartolomeo

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Engine thermal management can reduce significantly CO2 emissions in road vehicles without altering sensibly the engine layout. However, more efficient auxiliaries also participate to fuel consumption saving and, therefore, to CO2 emissions reduction. Typically, centrifugal cooling pumps are adopted as circulating devices, but their efficiency varies highly with rotational speed, wasting energy during real operation despite being optimized at the design point. Instead, volumetric pumps keep a high efficiency also far from it, enhancing the overall engine efficiency. In this paper, the performances of a screw-type volumetric pump have been compared with those of a centrifugal pump considering the same cooling circuit of a mid-size engine for passenger vehicles. Both pumps have been designed to satisfy the cooling flow rate required by the engine during a homologation cycle, while verifying their capability to cool the engine operating at maximum power. Once prototyped, the pumps performance maps have been measured, showing a high Best Efficiency Point for both cases. However, the screw pump has better performance in off-design conditions, being the centrifugal pump efficiency strictly dependent on its rotational speed which significantly changes during a real driving. The comparison of the two pumps has been done by reproducing the WLTC on a dynamic test bench. The rotational speed of the volumetric pump has been adjusted to deliver the same flow rate produced by the centrifugal pump as requested by the engine. Results show that the prototyped screw-type volumetric pump absorbs 21% less energy than the prototyped centrifugal pump, reducing CO2 emissions by 0.28 g/km.

show abstract

Simulations and analysis of high-temperature proton exchange membrane fuel cell and its cooling system to power an automotive vehicle

Cited by 29 publications

References 41 publications

Ultrahigh Proton Conductivities of Postmodified Hf(IV) Metal–Organic Frameworks and Related Chitosan-Based Composite Membranes

Ultrahigh Proton Conductivities of Postmodified Hf(IV) Metal–Organic Frameworks and Related Chitosan-Based Composite Membranes

Evaluation of functional layers thinning of high temperature polymer electrolyte membrane fuel cells after long term operation

Comparison on the energy absorbed of volumetric and centrifugal pumps for automotive engine cooling

Contact Info

Product

Resources

About