Research Development on Novel Anode of Solid Oxide Direct Carbon Fuel Cells

doi:10.3724/SP.J.1077.2013.13553

Abstract

Abstract:

Solid oxide direct carbon fuel cells (SO-DCFCs) can convert the chemical energy of the carbon fuel directly into electricity with high efficiency, wide fuel applicability and convenience for CO₂ capture. SO-DCFCs show promising development in the situation that the energy and environmental issues become increasingly prominent. One of the key issues in SO-DCFC development is the anode which can accelerate carbon conversion, mass transportation within the electrode and impurities tolerance. This paper systematically summarized and analyzed the anode structural features, operating process, material characteristics of three types of SO-DCFC anode, including porous solid anode, molten carbonate anode and liquid metal anode. The liquid metal anode was particularly focused on due to its distinctive advantages in current collection, performance stability and the CO ratio in exhaust gas. Finally, the development trends of the anode for SO-DCFC in the future are discussed.

Key words: solid oxide direct carbon fuel cells, porous solid anode, molten carbonate anode, liquid metal anode, review

CLC Number:

O646
X701

WANG Hong-Jian, CAO Tian-Yu, SHI Yi-Xiang, CAI Ning-Sheng. Research Development on Novel Anode of Solid Oxide Direct Carbon Fuel Cells[J]. Journal of Inorganic Materials, 2014, 29(7): 681-686.

Figures/Tables 4

Fig. 1 Working principle of porous solid anode SO-DCFC[8]

Fig. 2 Working principle of molten carbonate anode SO-DCFC[14]

Fig. 3 Working principle of liquid metal anode SO-DCFC[20]

Table 1 Melting point of metal and metal oxide[28]

Metal	Melting point /℃	Metal oxide	Oxide melting point /℃
Sn	231.9	SnO₂	1927
Cu	1083.2	Cu₂O	1230
Pb	327.4	PbO	890
In	156.4	In₂O₃	2000
Bi	271.3	Bi₂O₃	817
Sb	630.5	Sb₂O₃	655

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