Other possible fuels and possible use of blended fuels in fuel cells

Daş, Elif; Ungan, Hande; Yurtcan, Ayşe Bayrakçeken; Fıçıcılar, Berker

doi:10.1016/b978-0-12-818624-4.00012-1

Cited by 3 publications

(2 citation statements)

References 105 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…11 Among them, electrode surface poisoning by acetone, which is the major product of IPA oxidation, has been pointed out as the main reason for deactivation of DIFC. 9,10,12 To enhance DIFC durability, some strategies for mitigating surface poisoning have been proposed such as high operating temperature, 7 continual shutdown period, 13 and acetone-tolerant catalyst. 14−17 Most studies showed only one cycle of polarization curves to demonstrate enhanced durability of DIFC under each modified condition.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Despite the potential of DIFC, application is still arduous because of the performance decay over time. , The reasons for the performance decay in DIFC have been reported as follows: acetone poisoning, IPA crossover, and gas (CO or CO 2 ) bubble on the electrode . Among them, electrode surface poisoning by acetone, which is the major product of IPA oxidation, has been pointed out as the main reason for deactivation of DIFC. ,, To enhance DIFC durability, some strategies for mitigating surface poisoning have been proposed such as high operating temperature, continual shutdown period, and acetone-tolerant catalyst. − Most studies showed only one cycle of polarization curves to demonstrate enhanced durability of DIFC under each modified condition. However, voltage (or potential) cycling is needed to validate the enhanced durability because performance decay can occur from various situations such as transition of voltage, open-circuit voltage (OCV) holding in fuel cells. − Besides, previous studies reported that the removal of carbonaceous species for reactivation of poisoned surface is possible by applying an anodic or cathodic potential. , However, the reactivation process was not carried out in a membrane electrode assembly (MEA), which is similar to real applications but only in a half-cell.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mixed Potential Driven Self-Cleaning Strategy in Direct Isopropanol Fuel Cells

Kim,

Son

et al. 2024

ACS Catal.

View full text Add to dashboard Cite

A direct liquid organic hydrogen carrier fuel cell, such as the direct isopropanol fuel cell (DIFC), employs hydrogen to generate electricity through a combined process of dehydrogenation and hydrogen utilization. However, the performance decay of DIFC over time is a critical limitation. While the origin of deactivation and the strategy to overcome it have been investigated, the lack of understanding of the deactivation mechanism remains a significant bottleneck. In this study, cyclic voltammograms conducted in the half-cell (three-electrode system) exhibit a notable variation trend of degradation in isopropyl alcohol (IPA) oxidation depending on the potential window. This variation suggests surface cleaning processes based on acetone removal involving acetone oxidation and reduction, respectively. Based on this trend, a self-cleaning strategy via mixed potential between H 2 oxidation and acetone reduction is designed to remove poisoned acetone in the DIFC full-cell (two-electrode system). The enhanced durability observed in the modified DIFC, fueled by H 2 -saturated IPA, validates the self-cleaning process of the electrocatalyst in the anode, suggesting the feasibility of applying the mixed potential concept to enhance durability in full-cell systems.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mixed Potential Driven Self-Cleaning Strategy in Direct Isopropanol Fuel Cells

Kim,

Son

et al. 2024

ACS Catal.

View full text Add to dashboard Cite

show abstract

Unlocking the potential of Pt-based and metal oxides catalysts in liquid fuel cells technologies: Performance and challenges

Che Ramli,

Pasupuleti,

Zainoodin

et al. 2024

Ain Shams Engineering Journal

View full text Add to dashboard Cite

Green Hydrogen

Aydın,

Bozkurt,

Daş

2024

Advancements in Renewable Energy and Green Hydrogen

View full text Add to dashboard Cite

Hydrogen (H2) is an energy carrier that offers both some of the benefits of fossil fuels and is clean with a low carbon footprint. Production of H2 from the water electrolysis using renewable energy is called green hydrogen and is the preferred pathway for future H2 production. In order to decarbonize the energy sector, green hydrogen must be adapted to existing systems using different technologies. Fuel cells, gas turbines (GTs), and combined heat and power (CHP) systems are the primary applications for hydrogen in power generation. CHP systems are highly efficient and can be employed in buildings, industrial facilities, and district energy systems to provide electrical and thermal energy. Heat pumps integrated with fuel cells are another example of energy-efficient technology. Mixing hydrogen in a specific volumetric ratio improves the resource utilization of the present natural gas heating systems. This chapter focuses on green hydrogen practices in electrical and thermal energy generation applications.

show abstract

Other possible fuels and possible use of blended fuels in fuel cells

Cited by 3 publications

References 105 publications

Mixed Potential Driven Self-Cleaning Strategy in Direct Isopropanol Fuel Cells

Mixed Potential Driven Self-Cleaning Strategy in Direct Isopropanol Fuel Cells

Unlocking the potential of Pt-based and metal oxides catalysts in liquid fuel cells technologies: Performance and challenges

Green Hydrogen

Contact Info

Product

Resources

About