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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 29, 2010
Accepted January 3, 2011

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Performance of fluidized bed electrode in a molten carbonate fuel cell anode

Jubing Zhang Zhaoping Zhong^† Jianmin Xiao Zongming Fu Jinxiao Zhao Weiling Li Min Yang

School of Energy and Environment, Southeast University, Nanjing 210096, China

zzhong@seu.edu.cn

Korean Journal of Chemical Engineering, August 2011, 28(8), 1773-1778(6), 10.1007/s11814-011-0004-x

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Abstract

A fluidized bed electrode could lower concentration polarization and activation polarization because of its high mass and heat transfer coefficient. The polarization characteristics of the fluidized bed electrode are systematically investigated in a molten carbonate fuel cell anode with an O2/CO2/gold reference electrode. The results show that polarization performance of the anode is improved by selecting proper flow rates of H2, O2 and CO2, choosing suitable nickel particle content together with appropriate O2/CO2 ratio, and increasing reaction temperature as well as the area of the current collector. Limiting current density of 115.56 mA·cm^(-2) is achieved under optimum performance as follows: a cylindrically curved nickel plate current collector, nickel particle content of 7.89%, the reaction temperature of 923 K, H2 flow rate of 275 mL·min^(-1), O2/CO2 flow rate of 10/20 mL·min^(-1) and O2/CO2 ratio of 1 : 2.

Keywords

Fluidized Bed Electrode Molten Carbonate Fuel Cell Anode Polarization Current Density

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