Mechanism of enhanced performance on a hybrid direct carbon fuel cell using sawdust biofuels
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Biomass is expected to play a significant role in power generation in the near future. With the uprising of carbon fuel cells, hybrid direct carbon fuel cells (HDCFCs) show its intrinsic and incomparable advantages in the generation of clean energy with higher efficiency. In this study, two types of biomass treated by physical sieve and pyrolysis from raw sawdust are investigated on an anode-supported HDCFC. The structure and thermal analysis indicate that raw sawdust has well-formed cellulose I phase with very low ash. Electrochemical performance behaviors for sieved and pyrolyzed sawdust combined with various weight ratios of carbonate are compared in N2 and CO2 purge gas. The results show that the power output of sieved sawdust with 789 mWcm−2 is superior to that of pyrolyzed sawdust in CO2 flowing, as well as in N2 flowing. The anode reaction mechanism for the discrepancy of two fuels is explained and the emphasis is also placed on the modified oxygen-reduction cycle mechanism of catalytic effects of Li2CO3 and K2CO3 salts in promoting cell performance.
Li , S , Jiang , C , Liu , J , Tao , H , Meng , X , Connor , P , Hui , J , Wang , S , Ma , J & Irvine , J T S 2018 , ' Mechanism of enhanced performance on a hybrid direct carbon fuel cell using sawdust biofuels ' Journal of Power Sources , vol. 383 , pp. 10-16 . https://doi.org/10.1016/j.jpowsour.2018.02.040
Journal of Power Sources
© 2018 Elsevier Ltd. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1016/j.jpowsour.2018.02.040
DescriptionThe authors gratefully acknowledge the financial support by the Royal Society of Edinburgh for a RSE BP Hutton Prize in Energy Innovation.
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