Catalysis and oxidation of carbon in a hybrid direct carbon fuel cell

Jiang, Cairong; Irvine, John T. S.

doi:10.1016/j.jpowsour.2010.11.066

Cited by 78 publications

(64 citation statements)

References 9 publications

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“…7 However, the employment of biomass as fuel in thermal power plants is still economically infeasible due to the thermodynamically limited conversion efficiency and high cost of logistics (e.g. [17][18][19] Moreover, DCFCs have several advantages, compared to conventional power plants and gasfed solid oxide fuel cells (SOFCs), such as: (i) very high, nearly 100 %, theoretical efficiency, due to the very low entropy change of carbon oxidation (∆S o = 2.9 J/K·mol) 20 , (ii) abundance and low cost of raw materials (coke, biomass, municipal solid wastes, etc), (iii) lower emissions per unit of produced energy compared to coal-fired plants. [4][5][6] Direct Carbon Fuel cells (DCFCs) are amongst the most promising energy conversion alternatives, since they represent the only technology that can effectively exploit the chemical energy stored in solid carbonaceous materials.…”

Section: Introductionmentioning

confidence: 99%

Assessment of biochar as feedstock in a direct carbon solid oxide fuel cell

et al. 2015

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The feasibility of employing biochar as a fuel in a direct carbon fuel cell (DCFC) or a hybrid carbon fuel cell (HCFC) is investigated in the present study, by utilizing bare biochar or biochar/carbonate mixture as feedstock, respectively. Three different types of biochars, i.e., pistachio shells (PI), pecan shells (PE) and sawdust (SD) are used as feedstock in a solid oxide fuel cell (SOFC) of a type: Biochar|Co-CeO 2 /YSZ/Ag|Air. All samples were characterized by means of chemical composition (ultimate/proximate analysis), thermogravimetric analysis (TGA), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM), to obtain a close correlation between cell performance and biochar characteristics. The electrochemical measurements reveal that the optimum performance, in terms of maximum power density (P max ), is obtained for the PI biochar, which demonstrated a power output of 15.5 mW/cm 2 at 800 o C, compared to 14 and 10 mW/cm 2 for PE and SD biochars, respectively. The obtained cell performance results are interpreted on the basis of biochar physicochemical characteristics and AC impedance spectroscopy studies. The superior performance of PI biochar is attributed to a synergistic effect of several physicochemical characteristics, involving the porosity, the acidity, the volatile matter, the carbon and hydrogen content as well as the population of oxygenated surface functionalities.

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Section: Introductionmentioning

confidence: 99%

Assessment of biochar as feedstock in a direct carbon solid oxide fuel cell

et al. 2015

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“…The most promising result is delivered by the OW-C where the limiting current density is almost 550 mA cm À2 . This could be attributed to the high carbon content of the OW-C sample (~85%) which facilitate maintaining the potential level at high current density region by ensuring enough carbon at the Three Phase Boundary (TPB) between the carbon and the composite electrolyte where simultaneous C/CO/H 2 and CH 4 anodic electrochemical reactions occur [20,[30][31].…”

Section: Evaluation Of Ow-c In the Dcfc Systemmentioning

confidence: 99%

Investigation of chemical and electrochemical reactions mechanisms in a direct carbon fuel cell using olive wood charcoal as sustainable fuel

Elleuch

Halouani

2015

Journal of Power Sources

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“…Other benefits, such as rapid startup and cool‐down cycles as well as less expensive materials for cell fabrication, can also be achieved by reducing operating temperatures to 700 °C or below. However, molten carbonate CF‐SOFCs exhibited poor performance at lower temperature due to the high resistance of solid carbon oxidation at the anode; the anode resistance can exceed tens of Ω cm 2 . Jiang et al.…”

Section: Materials and Structural Development Of The Anode In Cf‐sofcsmentioning

confidence: 99%

Anodes for Carbon‐Fueled Solid Oxide Fuel Cells

Zhou

Jiao

et al. 2015

ChemElectroChem

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Solid oxide fuel cells (SOFCs) have been considered as one of the most promising technologies for high‐efficiency electrical energy generation using a variety of fuels, including hydrogen, natural gas, biogas, carbon monoxide, liquid hydrocarbons and solid carbon. Carbon‐fueled SOFCs (CF‐SOFCs) potentially have the highest volume power density because solid carbon has a fuel energy density of 23.95 kWh L−1, which is approximately 10 times higher than that of liquid hydrogen. However, the reactivity and fluid mobility of carbon is significantly lower than those of gaseous fuels; thus, CF‐SOFCs will be kinetically limited at the anode. Herein, we review the development of anodes in CF‐SOFCs from the perspective of material compositions and microstructures. Challenges and research trends based on the fundamental understanding of the materials science and engineering for anode development in CF‐SOFCs are discussed.

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Catalysis and oxidation of carbon in a hybrid direct carbon fuel cell

Cited by 78 publications

References 9 publications

Assessment of biochar as feedstock in a direct carbon solid oxide fuel cell

Assessment of biochar as feedstock in a direct carbon solid oxide fuel cell

Investigation of chemical and electrochemical reactions mechanisms in a direct carbon fuel cell using olive wood charcoal as sustainable fuel

Anodes for Carbon‐Fueled Solid Oxide Fuel Cells

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