Structurally modified coal char as a fuel for solid oxide-based carbon fuel cells with improved performance

Jiao, Yong; Zhao, Jing; An, Wenting; Zhang, Liqin; Sha, Yujing; Yang, Guangming; Shao, Zongping; Zhu, Zhenping; Li, Si‐Dian

doi:10.1016/j.jpowsour.2015.04.121

Cited by 41 publications

(46 citation statements)

References 43 publications

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“…However, these impurity peaks are significantly decreased even wiped out in the FTIR pattern of PHSC, revealing that most of the sulfuric impurities and mineral matter were removed by MLC treatment. The peaks at 1598 cm −1 in Figure A are assigned to the C═O (conjugated with C═C bonds) stretching vibrations of carbonyl groups . The process of MLC treatment made the carbonyl group content in PHSC increase, which leads to the enhancement of the peak at 1598 cm −1 .…”

Section: Resultsmentioning

confidence: 97%

“…A smaller volume of carbon microcrystals means a higher proportion of surface carbon atoms to the total carbon atoms within the microcrystals. Therefore, PHSC has a higher Boudouard reactivity than HSC …”

Section: Resultsmentioning

confidence: 99%

“…The crystallite size perpendicular to the basal plane, L c , is calculated from the obtained (002) reflection, and the crystallite size parallel to the basal plane, L a , is calculated using the (100) reflection. K values of 0.89 and 1.84 are used to calculate L c and L a , respectively …”

Section: Methodsmentioning

confidence: 99%

“…Recently, the feasibility of coal as fuel for DC‐SOFCs has attracted more and more attentions . The peak power density (PPD) of 89 mW cm −2 at 800°C was observed for the char of brown coal in DC‐SOFCs .…”

Section: Introductionmentioning

confidence: 99%

“…Operating at the same temperature, a PPD of 100 mW cm −2 was achieved through a metallurgical coal char directly fed to a Ni‐YSZ anode supported SOFC . By impregnating the coal char with an Fe m O n ‐alkaline metal oxide catalyst and modifying its microstructure using alkali treatment, improved PPDs of 204 and 221 mW cm −2 were obtained again at 850°C, respectively . In fact, the impacts of mineral matter in coal on the performance of DC‐SOFCs are diverse.…”

Section: Introductionmentioning

confidence: 99%

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Purified high‐sulfur coal as a fuel for direct carbon solid oxide fuel cells

Jiao

Xue

et al. 2018

Int J Energy Res

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Summary The use of low‐rank coal in a clean and efficient manner is a major challenge facing the current coal technology. A high‐sulfur coal with 4.5 wt% sulfur is chosen to examine the compatibility of the pristine coal and the purified contrast with a solid oxide fuel cell (SOFC) with nickel cermet anodes. Desulfurization of the pristine coal is performed by molten caustic leaching method with a removal ratio of 80%. Analyses of the physicochemical properties of coal samples indicate that the purified coal has a more favorable structure and higher Boudouard reactivity, which is suitable as a fuel for fuel cells. The assessment of electrochemical performance reveals that the purification treatment not only makes the peak power density of SOFCs improve from 115 to 221 mW cm−2 at 900°C but also extends their durability from 1.7 to 11.2 hours under a current density of 50 mA cm−2 at 850°C with a fuel availability increasing from 6.25% to 40%. The postmortem analyses show that far less deposited carbon and nickel sulfide are observed on the anode surface. The fuel‐based investigation reveals that the purified coal is a promising fuel for direct carbon fuel cells.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Purified high‐sulfur coal as a fuel for direct carbon solid oxide fuel cells

Jiao

Xue

et al. 2018

Int J Energy Res

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Solid oxide fuel cell using agroforestry waste as fuel: A balance between power output and fuel utilization

Liu

Zhou

Zhang

et al. 2022

Asia-Pacific J Chem Eng

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Solid oxide fuel cell (SOFC) has the potential to convert biomass to electrical power cleanly and efficiently by integrating with in situ gasification of biomass. It is necessary to keep a balance between maximizing the power output of fuel cells and minimizing the pretreatment of biomass. Herein, we report the comparison of output performance between the apple tree branches (ATB) dried at 110 C and the one pyrolyzed at 500 C in SOFCs. The results show that the peak power densities (PPD) of SOFCs operated at 850 C were 157 and 238 mW cm À2 for the dried and the pyrolyzed samples, respectively. And the corresponding apparent fuel utilizations for them were 18.1% and 24.6%, respectively. However, if counting the pyrolysis yield ($28 wt%), the overall fuel utilization of the pyrolyzed sample declined from 24.6% to $6.9%. In addition, if loading the steel slag (SS)-based catalyst catalyst to the dried sample, its PPD at 850 C were almost doubled to 303 mW cm À2 , but the fuel utilization reduced to 9.2%. Meanwhile, SOFCs using the medium-density fiberboard (MDF) as fuel exhibited the parallel trends in electrochemical performance and fuel utilization.

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Recent Advances in the Development of Anode Materials for Solid Oxide Fuel Cells Utilizing Liquid Oxygenated Hydrocarbon Fuels: A Mini Review

Wang

Julião

et al. 2018

Energy Tech

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Solid oxide fuel cells (SOFCs) are the most widely used fuel cells due to their excellent fuel flexibility, high efficiency and low emissions. Although the liquid fuels are easier to handle and transport than hydrogen, their direct use in SOFC leads to serious performance deterioration because of the coke formation on the traditional Ni‐based cermet anodes. In this review, the advances in the development of coking resistant anodes and the new liquid fuels such as oxygenated hydrocarbons to solve the problem of coke formation with Ni‐based anodes are summarized. It is concluded that Ni‐based cermets are still the most promising anode materials and some targeted modifications are needed to improve the coking resistance. Several strategies to improve the coking resistance of Ni‐based anodes are highlighted. The aim of this review is to provide some helpful guidance and potential directions for the future design of anodes for SOFCs utilizing liquid oxygenated hydrocarbon fuels directly.

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Structurally modified coal char as a fuel for solid oxide-based carbon fuel cells with improved performance

Cited by 41 publications

References 43 publications

Purified high‐sulfur coal as a fuel for direct carbon solid oxide fuel cells

Purified high‐sulfur coal as a fuel for direct carbon solid oxide fuel cells

Solid oxide fuel cell using agroforestry waste as fuel: A balance between power output and fuel utilization

Recent Advances in the Development of Anode Materials for Solid Oxide Fuel Cells Utilizing Liquid Oxygenated Hydrocarbon Fuels: A Mini Review

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