Long Term Performance Study of a Direct Methanol Fuel Cell Fed with Alcohol Blends

Leo, Teresa J.; Raso, M.A.; Navarro, Emilio; Mora, E. M.

doi:10.3390/en6010282

Cited by 16 publications

(7 citation statements)

References 27 publications

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“…As a matter of fact, ethanol, and very likely other volatile congeners, have been shown to decrease the energy yield, as already documented in the literature [28]. Initially, this result may appear discouraging when compared to the outcomes of a pure methanol supply (see Tables 2 and 3).…”

Section: Electrochemical Measurements Of Diluted Distillation Fractionsmentioning

confidence: 70%

Evaluation of Distillery Fractions in Direct Methanol Fuel Cells and Screening of Reaction Products

Montevecchi,

Cannio,

Cancelli

et al. 2024

Clean Technol.

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Fuel cells represent an appealing avenue for harnessing eco-friendly energy. While their fuel supply traditionally stems from water electrolysis, an environmentally conscious approach also involves utilizing low-weight alcohols like methanol and ethanol. These alcohols, concentrated from sustainable sources within the enological by-product distillation process, offer a noteworthy contribution to the circular economy. This study delved into evaluating the efficacy of distillery fractions in powering methanol fuel cells. Beyond their energy-generation potential, the performed GC-MS analysis unveiled appreciable quantities of acetic acid resulting from the partial oxidation of ethanol. This revelation opens the door to intriguing possibilities, including the recovery and repurposing of novel compounds such as short-chain fatty acids (predominantly acetic acid), ketones, and aldehydes—establishing a link between sustainable energy production and the emergence of valuable by-product applications.

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Section: Electrochemical Measurements Of Diluted Distillation Fractionsmentioning

confidence: 70%

Evaluation of Distillery Fractions in Direct Methanol Fuel Cells and Screening of Reaction Products

Montevecchi,

Cannio,

Cancelli

et al. 2024

Clean Technol.

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“…Alcohols and their blends and aqueous solutions are interesting candidates, e.g., for the use as fuels in direct alcohol fuel cells [125][126][127]. There are lots of vibrational spectroscopic studies investigating the physical chemistry of alcohols and their mixtures with water, in particular the hydrogen bonding phenomena [128,129].…”

Section: Alternative Liquid Fuels and Special Applicationsmentioning

confidence: 99%

Recent Advances in the Characterization of Gaseous and Liquid Fuels by Vibrational Spectroscopy

Kiefer

2015

Energies

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Most commercial gaseous and liquid fuels are mixtures of multiple chemical compounds. In recent years, these mixtures became even more complicated when the suppliers started to admix biofuels into the petrochemical basic fuels. As the properties of such mixtures can vary with composition, there is a need for reliable analytical technologies in order to ensure stable operation of devices such as internal combustion engines and gas turbines. Vibrational spectroscopic methods have proved their suitability for fuel characterization. Moreover, they have the potential to overcome existing limitations of established technologies, because they are fast and accurate, and they do not require sampling; hence they can be deployed as inline sensors. This article reviews the recent advances of vibrational spectroscopy in terms of infrared absorption (IR) and Raman spectroscopy in the context of fuel characterization. The focus of the paper lies on gaseous and liquid fuels, which are dominant in the transportation sector and in the distributed generation of power. On top of an introduction to the physical principles and review of the literature, the techniques are critically discussed and compared with each other.

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“…In order to mitigate such phenomena, novel materials and components need to be developed and intensively tested in relevant operating conditions [14][15][16] and therefore the development of representative accelerated stress tests (ASTs) is crucial to reduce the required testing time. Typically, AST protocols are developed to enhance under specific operating conditions one single degradation mechanism at a time [17,18] (e.g., catalyst dissolution and/or agglomeration, membrane degradation, etc.…”

Section: Introductionmentioning

confidence: 99%

A Novel Accelerated Stress Test for a Representative Enhancement of Cathode Degradation in Direct Methanol Fuel Cells

et al. 2023

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Performance decay of direct methanol fuel cells hinders technology competitiveness. The cathode electrochemical surface area loss is known to be a major reason for performance loss and it is mainly affected by cathode potential and dynamics, locally influenced by water and methanol crossover. To mitigate such phenomenon, novel materials and components need to be developed and intensively tested in relevant operating conditions. Thus, the development of representative accelerated stress tests is crucial to reduce the necessary testing time to assess material stability. In the literature, the most diffused accelerated stress tests commonly enhance a specific degradation mechanism, each resulting in limited representativeness of the complex combination and interaction of mechanisms involved during real-life operation. This work proposes a novel accelerated stress test procedure permitting a quantifiable and predictable acceleration of cathode degradation, with the goal of being representative of the real device operation. The results obtained with a 200 h accelerated stress test are validated by comparing both in situ and post mortem measurements with those performed during a 1100 h operational test, demonstrating an acceleration factor equal to 6.25x and confirming the development of consistent cathode degradation.

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Long Term Performance Study of a Direct Methanol Fuel Cell Fed with Alcohol Blends

Cited by 16 publications

References 27 publications

Evaluation of Distillery Fractions in Direct Methanol Fuel Cells and Screening of Reaction Products

Evaluation of Distillery Fractions in Direct Methanol Fuel Cells and Screening of Reaction Products

Recent Advances in the Characterization of Gaseous and Liquid Fuels by Vibrational Spectroscopy

A Novel Accelerated Stress Test for a Representative Enhancement of Cathode Degradation in Direct Methanol Fuel Cells

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