Kim_POWER-S-19-00941_accepted manuscript version.pdf (3.74 MB)

Promising electrochemical study of titanate based anodes in direct carbon fuel cell using walnut and almond shells biochar fuel

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journal contribution
posted on 21.06.2019, 10:47 by Amjad Ali, Rizwan Raza, Muhammad Imran Shakir, Asia Iftikhar, Farah Alvi, Muhammad Kaleem Ullah, Abdul Hamid, Jung-Sik Kim
The direct carbon fuel cell (DCFC) is an efficient device that converts the carbon fuel directly into electricity with 100% theoretical efficiency contrary to practical efficiency around 60%. In this paper four perovskite anode materials La0.4Sr0.6M0.09Ti0.91O3-δ (M = Ni, Fe, Co, Zn) have been prepared using sol-gel technique to measure the performance of the device using solid fuel. These materials have shown reasonable stability and conductivity at 700 °C. Further structural analysis of as-prepared anode material using XRD technique reveals a single cubic perovskite structure with average crystallite size roughly 47 nm. Walnut and almond shells biochar have also been examined as a fuel in DCFC at the temperature range 400–700 °C. In addition, Elemental analysis of walnut and almond shells has shown high carbon content and low nitrogen and sulfur contents in the obtained biochar. Subsequently, the superior stability of as-prepared anode materials is evident by thermogravimetric analysis in pure N2 gas atmosphere. Conversely, the LSFT anode has shown the highest electronic conductivity of 7.53Scm−1 at 700 °C. The obtained power density for LSFTO3-δ composite anode mixed in sub-bituminous coal, walnut and almond shells biochar is of 68, 55, 48 mWcm−2 respectively. A significant improvement in performance of DCFC (78 mWcm−2) was achieved.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

Journal of Power Sources

Volume

434

Pages

126679 - 126679

Citation

ALI, A. ... et al., 2019. Promising electrochemical study of titanate based anodes in direct carbon fuel cell using walnut and almond shells biochar fuel. Journal of Power Sources, 434: 126679.

Publisher

© Elsevier BV

Version

AM (Accepted Manuscript)

Publisher statement

This paper was accepted for publication in the journal Journal of Power Sources and the definitive published version is available at https://doi.org/10.1016/j.jpowsour.2019.05.085.

Acceptance date

25/05/2019

Publication date

2019-06-15

Copyright date

2019

ISSN

0378-7753

Language

en

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