Effect of carbon dioxide on the performance of Ni/PTFE and Ag/PTFE electrodes in an alkaline fuel cell

Al-Saleh, M.A.; Gültekin, Selahattin; Al-Zakri, A.S.; Celiker, H.

doi:10.1007/bf00249861

Cited by 44 publications

(19 citation statements)

References 2 publications

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“…additional electrode degradation like deposition of K 2 CO 3 was observed. Al-Saleh et al (1994) showed that the concentration up to 1% carbon dioxide in the oxidant steam to Ag/PTEE electrode did not affect the cell performance over a period of 200 h. The most probable reason for the decrease in the cell performance is the change in electrolyte composition. The conversion of the electrolyte from KOH to K 2 CO 3 by the absorption of carbon dioxide slows down the rate of oxidation of fuel the anode., Gulzow and Schulze (2004).…”

Section: Electrolytementioning

confidence: 98%

A Vital Source of Energy for 21st Century: Review On Alkaline Fuel Cell

Sahu¹,

Basu²

2014

Energy Research Journal

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A cell which converts the chemical energy into electric energy as eco-friendly way on the principle of electrochemical and Inverted by Sir William Grove in 1839 is known to be "fuel cell". It became a vital source of energy for the 21st Century. Different types of fuel cell are invented based on their working temperature and a type of material has been used in which alkaline fuel cell is one of the best. Fuel cell is an electro-chemical energy converter at the simplest conceptual level it's combined hydrogen with oxygen to produced water and electricity. It does not store the energy itself. It is flow process which draws liquid or gaseous fuel from separated tank and if necessary converse it to hydrogen in reformer. The hydrogen is taken combined with oxygen air in the fuel cell to produced water and electricity. The energy conversion process in the fuel cell is therefore intrinsically clean and silent. Generally other fuel such as natural gas, methanol, ethanol and even coal can also be used. The object of this study is to summarize the characteristic of the alkaline fuel cell.

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Section: Electrolytementioning

confidence: 98%

A Vital Source of Energy for 21st Century: Review On Alkaline Fuel Cell

Sahu¹,

Basu²

2014

Energy Research Journal

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“…Therefore, considering the cost and the simplicity of operation, DAAFC may be more advantageous as compared to other low temperature fuel cells. One may point out that like the alkaline fuel cell, DAAFC may have a problem of carbon dioxide poisoning either from air or from CO 2 containing fuel, or due to oxidation of carbonaceous fuel fed directly to the cell [1,2,13]. In separate studies, Saleh et al [13], Kosher and Kordesch [8], Gülzow et al [15] and Tewari et al [1] showed that no additional electrode degradation like deposition of K 2 CO 3 was observed in the presence of CO 2 in the cathode over a period of 200 to 1,000 h of operation.…”

Section: Introductionmentioning

confidence: 99%

Development of a Direct Alcohol Alkaline Fuel Cell Stack

et al. 2010

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Direct alcohol alkaline fuel cells (DAAFC) are one of the potential fuel cell types in the category of low temperature fuel cells, which could become an energy source for portable electronic equipment in future. In the present study, a simple DAAFC stack has been developed and studied to evaluate the maximum performance for a given fuel (methanol or ethanol) and electrolyte (KOH) at various concentrations and temperatures. The open circuit voltage of the stack of four cells was nearly 4.0 V. A particular combination, 2 M fuel (methanol or ethanol) and 3 M KOH, results in maximum power density of the stack. The maximum power density obtained from the DAAFC stack (25 °C) was 50 mW cm–2 at 20 mA cm–2 for methanol and 17 mA cm–2 for ethanol. The stack power density corroborated with that obtained from a single cell, indicating there was no further loss in the stack.

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“…The simplicity of the electrolyte used in AFCs provides a distinct advantage compared to PEMFCs. The major operating constraint for liquid AFCs is carbonation and the formation of a precipitate is also significant [3]. When using alcohol as the fuel, alcohol crossover from the anode to the cathode poisons the catalyst.…”

Section: Introductionmentioning

confidence: 99%

Selective Cathode Catalysts for Mixed‐reactant Alkaline Alcohol Fuel Cells

Meng

et al. 2006

Fuel Cells

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A highly selective Ag‐W2C/C electrocatalyst for oxygen reduction is developed for potential application in mixed‐reactant alcohol fuel cells. The catalysts are prepared by an intermittent microwave heating (IMH) method. Both the W2C/C and Ag‐W2C/C show catalytic activity for oxygen reduction in alkaline media. The introduction of W2C into the Ag/C results in an enhanced activity that is evidenced by a positive movement in the onset potential and an increased current density at the same conditions. The novelty of the Ag‐W2C/C catalyst is the high selectivity for oxygen reduction in the presence of alcohol.

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Effect of carbon dioxide on the performance of Ni/PTFE and Ag/PTFE electrodes in an alkaline fuel cell

Cited by 44 publications

References 2 publications

A Vital Source of Energy for 21st Century: Review On Alkaline Fuel Cell

A Vital Source of Energy for 21st Century: Review On Alkaline Fuel Cell

Development of a Direct Alcohol Alkaline Fuel Cell Stack

Selective Cathode Catalysts for Mixed‐reactant Alkaline Alcohol Fuel Cells

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