A Microtubular Direct Carbon Solid Oxide Fuel Cell Operated on the Biochar Derived from Pepper Straw

Yu, Fangyong; Wang, Yishang; Xie, Yujiao; Zhang, Weimin; Zhang, Jinjin; Meng, Xiuxia; Xiao, Jie; Yang, Naitao

doi:10.1002/ente.201901077

Cited by 19 publications

(8 citation statements)

References 47 publications

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“…Yu et al found that DC-SOFCs that were supplied by the biochar that was derived from a pepper straw achieved a maximum power density of 217 mW cm −2 . This is comparable to 252 mW/cm 2 , which is the power density of the hydrogen-fueled device at a temperature of 850 • C. Therefore, the results obtained by Yu et al demonstrate that the pepper-straw charcoal contains natural catalysts, which contribute to improving the electrochemical oxidation of solid fuels in DC-SOFCs [14][15][16][17].…”

Section: Introductionmentioning

confidence: 87%

The Utilisation of Solid Fuels Derived from Waste Pistachio Shells in Direct Carbon Solid Oxide Fuel Cells

et al. 2021

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The comprehensive results regarding the physicochemical properties of carbonaceous materials that are obtained from pistachio shells support their usage as solid fuels to supply direct carbon solid oxide fuel cells (DC-SOFCs). The influence of preparation conditions on variations in the chemical composition, morphology of the biochar powders, and degree of graphitization of carbonaceous materials were investigated. Based on structural investigations (X-ray diffraction analysis and Raman spectroscopy), it was observed that disordered carbon particles developed during the application of thermal treatments. The use of X-ray fluorescence enabled a comparative analysis of the chemical composition of the inorganic matter in biocarbon-based samples. Additionally, the gasification of carbonaceous-based samples vs. time at a temperature of 850 °C was investigated in a H2O or CO2 gas atmosphere. The analysis demonstrated the conversion rate of biochar obtained from pistachio shells to H2, CH4 and CO during steam gasification. The electrochemical investigations of the DC-SOFCs that were supplied with biochars obtained from pistachio shells were characterized by satisfactory values for the current and power densities at a temperature range of 700–850 °C. However, a higher power output of the DC-SOFCs was observed when CO2 was introduced to the anode chamber. Therefore, the impact of the Boudouard reaction on the performance of DC-SOFCs was confirmed. The chars that were prepared from pistachio shells were adequate for solid fuels for utilization in DC–SOFCs.

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Section: Introductionmentioning

confidence: 87%

The Utilisation of Solid Fuels Derived from Waste Pistachio Shells in Direct Carbon Solid Oxide Fuel Cells

et al. 2021

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“…When the SOFC and gasifier are operated separately, an equilibrium CO molar fraction benefits the cell performance because a higher CO concentration accounts for a higher cell performance according to Equation (20). This is not the case when the SOFC and fluidized bed are coupled together, as shown in Figure 7b-f.…”

Section: Low Activity Carbon Fuel Withmentioning

confidence: 98%

“…Compared with other fuel cells fed with gaseous fuel (such as H 2 , natural gas, CH 4 ), the exclusive characteristic of DC-SOFC is the solid fuel, which has a higher volumetric energy density. The solid fuel is convenient and safe to transport and can be obtained widely from coal [9][10][11][12][13][14][15] and biomass [3,16] (such as almond shells [17], wheat straw [18], corn cob char [19], pepper straw [20], and pomelo peel [21]). The concentration of solid fuel will not decrease due to the co-existence with gaseous products during the operation of the fuel cell, and thus the theoretical potential will not reduce.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Fluidized Bed Gasifier Coupled with Solid Oxide Fuel Cell Fed with Solid Carbon

et al. 2021

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A model of a fluidized bed coupled with direct carbon solid oxide fuel cell (SOFC) is developed to explore the effect of coupling between fluidized bed and solid oxide fuel cell. Three gas–solid flow regimes are involved including fixed bed, delayed bubbling bed and bubbling bed. The anode reaction of SOFC is treated as the coupling processes of Boudouard gasification of carbon and electrochemical oxidation of CO. The effects of inlet velocity of the fluidizing agent CO2, carbon activity, channel width and coupling extent on the system performance are investigated. The results show that the inlet velocity of CO2 can promote the gasification rate in the anode, but too high velocities may lower CO molar fraction. The gasification rate generally increases with the increase of the channel width and carbon activity. The overlapping area between the anode surface and the initial carbon bed, gas–solid regime and carbon activity have a significant influence on the gasification rate and the maximum current density the system can support. Overall, the mass transport in the anode is dramatically enhanced by the expansion of the carbon bed, back-mixing, solid mixing and gas mixing, especially for the delayed bubbling bed and bubbling bed. This indicates that the adopted coupling method is feasible to improve the anode performance of direct carbon solid oxide fuel cell.

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“…Figure 6 shows the network map of prominent researchers working on every aspect of DC-SOFC: electrodes, electrolyte, design, reaction process, and carbon fuel source. 20 Biochar.-The direct utilization of solid carbon in a fuel cell is a relevant innovation for electric power generation. The carbon fuel cell could offer significant advantages such as high energy conversion efficiency, minimization of Nitrogen Oxide emission due to its operating temperature range of 700 °C-1000 °C, and the production of a nearly pure CO 2 exhaust stream for direct CO 2 sequestration.…”

mentioning

confidence: 99%

“…Several biomass materials have the potential to be utilized as fuel for DC-SOFC in the form of biochar after undergoing pyrolysis. Biochar from pineapple peel and leaves, orange, cassava rhizome, durian peel, and corncob are being utilized as phosphate adsorbents, 27 adsorption potential for oxytetracycline, 20 carbon sequestration and soil amendment, 28 adsorptions, 29 material for utilization in poly(lactic) acid biocomposites, 30 and dye removal. 31 Although biochar has been the subject of innovation, they are yet to be explored as potential fuel for DC-SOFC in the quest for finding the best-suited biofuel for a specific type of anode material in the energy storage device.…”

mentioning

confidence: 99%

Review—Bibliometrics and Current Research Trends on Direct Carbon-Solid Oxide Fuel Cells Utilizing Biomass as Fuel

Carbonell

Villagracia

Ong

et al. 2023

J. Electrochem. Soc.

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Biomass is considered a viable alternative source of energy after thermochemical conversion techniques and activation methods are adopted for its conversion to biochar and activated carbon, respectively. This work provides the bibliometrics and recent developments on Direct Carbon-Solid Oxide Fuel Cells (DC-SOFCs) using biochar as fuel and further enhanced through carbon activation. We review the dominant researchers from different countries and their contributions to the development of DC-SOFC to provide an overview of the physicochemical characteristics of the biochar and its corresponding effect in the operation of a DC-SOFC in terms of electrochemical performance when used as fuel. Data reveal that there are other biomasses which can still be pyrolyzed and used as DC-SOFC fuel. This review covers that, among the alternative carbon fuels to date, pomelo peel char is the most efficient and effective biochar fuel for DC-SOFC which yields the best output in terms of parameters such as peak power density and fuel utilization rate. Activation method as applied in the biochar fuel is an effective way to enhance the performance of the fuel cell. Prospects and challenges on how to address identified gaps for DC-SOFC with high power output operated with biomass as fuel are discussed.

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A Microtubular Direct Carbon Solid Oxide Fuel Cell Operated on the Biochar Derived from Pepper Straw

Cited by 19 publications

References 47 publications

The Utilisation of Solid Fuels Derived from Waste Pistachio Shells in Direct Carbon Solid Oxide Fuel Cells

The Utilisation of Solid Fuels Derived from Waste Pistachio Shells in Direct Carbon Solid Oxide Fuel Cells

Numerical Simulation of Fluidized Bed Gasifier Coupled with Solid Oxide Fuel Cell Fed with Solid Carbon

Review—Bibliometrics and Current Research Trends on Direct Carbon-Solid Oxide Fuel Cells Utilizing Biomass as Fuel

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