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Electrochemical study of composite materials for coal-based direct carbon fuel cell
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
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2018 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 43, no 28, p. 12900-12908Article in journal (Refereed) Published
Abstract [en]

The efficient conversion of solid carbon fuels into energy by reducing the emission of harmful gases is important for clean environment. In this regards, direct carbon fuel cell (DCFC) is a system that converts solid carbon directly into electrical energy with high thermodynamic efficiency (100%), system efficiency of 80% and half emission of gases compared to conventional coal power plants. This can generate electricity from any carbonaceous fuel such as charcoal, carbon black, carbon fiber, graphite, lignite, bituminous coal and waste materials. In this paper, ternary carbonate-samarium doped ceria (LNK-SDC) electrolyte has been synthesized via co-precipitation technique, while LiNiCuZnFeO (LNCZFO) electrode has been prepared using solid state reaction method. Due to significant ionic conductivity of electrolyte LNK-SDC, it is used in DCFC. Three types of solid carbon (lignite, bituminous, sub-bituminous) are used as fuel to generate power. The X-ray diffraction confirmed the cubic crystalline structure of samarium doped ceria, whereas XRD pattern of LNCZFO showed its composite structure. The proximate and ultimate coal analysis showed that fuel (carbon) with higher carbon content and lower ash content was promising fuel for DCFC. The measured ionic conductivity of LNK-SDC is 0.0998 Scm−1 and electronic conductivity of LNCZFO is 10.1 Scm−1 at 700 °C, respectively. A maximum power density of 58 mWcm−2 is obtained using sub-bituminous fuel.

Place, publisher, year, edition, pages
Elsevier Ltd , 2018. Vol. 43, no 28, p. 12900-12908
Keywords [en]
Bituminous, Lignite, LNK-SDC, Proximate and ultimate analysis, Sub-bituminous, Bituminous coal, Carbon black, Carbon fibers, Cerium oxide, Charcoal, Copper compounds, Electrolytes, Energy efficiency, Fuel cell power plants, Ionic conductivity, Iron compounds, Lithium compounds, Nickel compounds, Samarium, Solid state reactions, Zinc compounds, Electrochemical studies, Electronic conductivity, Solid state reaction method, Thermodynamic efficiency, Ultimate analysis, Direct carbon fuel cells (DCFC)
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:kth:diva-238082DOI: 10.1016/j.ijhydene.2018.05.104ISI: 000439678700036Scopus ID: 2-s2.0-85048539184OAI: oai:DiVA.org:kth-238082DiVA, id: diva2:1277998
Note

Export Date: 30 October 2018; Article; CODEN: IJHED; Correspondence Address: Raza, R.; Clean Energy Research Lab (CERL), Department of Physics, COMSATS University Islamabad, Lahore CampusPakistan; email: razahussaini786@gmail.com

QC 20190111

Available from: 2019-01-11 Created: 2019-01-11 Last updated: 2019-01-11Bibliographically approved

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Ali, AmjadRaza, RizwanAfzal, MuhammadBelova, Lyubov

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