Anodic Reaction Mechanisms in Direct Carbon Fuel Cells Using Carbon Particles Dispersed in Molten Carbonate

2016 ◽  
Vol 75 (15) ◽  
pp. 525-531
Author(s):  
H. Watanabe ◽  
D. Umehara
Keyword(s):  
Fuel Cells ◽  
Reaction Mechanisms ◽  
Molten Carbonate ◽  
Anodic Reaction ◽  
Carbon Particles ◽  
Direct Carbon Fuel Cells

Modeling of a Methane Fuelled Direct Carbon Fuel Cell System

2010 ◽  
Vol 7 (6) ◽  
Author(s):  
K. Hemmes ◽  
M. Houwing ◽  
N. Woudstra
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Cell System ◽  
Molten Carbonate Fuel Cell ◽  
Total System ◽  
Molten Carbonate ◽  
Heating Value ◽  
Carbon Particles ◽  
Direct Carbon Fuel Cell ◽  
Air Stream

Direct Carbon Fuel Cells (DCFCs) have great thermodynamic advantages over other high temperature fuel cells such as molten carbonate fuel cell (MCFC) and solid oxide fuel cell. They can have 100% fuel utilization, no Nernst loss (at the anode), and the CO2 produced at the anode is not mixed with other gases and is ready for re-use or sequestration. So far only studies have been reported on cell development. In this paper we study in particular the integration of the production of clean and reactive carbon particles from methane as a fuel for the direct carbon fuel cell. In the thermal decomposition process heat is upgraded to chemical energy in the carbon and hydrogen produced. The hydrogen is seen as a product as well as the power and heat. Under the assumptions given the net system electric efficiencies are 22.9% (based on methane lower heating value, LHV) and 20.7% (higher heating value, HHV). The hydrogen production efficiencies are 65.5% (based on methane LHV) and 59.1% (HHV), which leads to total system efficiencies of 88.4% (LHV) and 79.8% (HHV). Although a pure CO2 stream is produced at the anode outlet, which is seen as a large advantage of DCFC systems, this advantage is unfortunately reduced due to the need for CO2 in the cathode air stream. Due to the applied assumed constraint that the cathode outlet stream should at least contain 4% CO2 for the proper functioning of the cathode, similar to MCFC cathodes, a major part of the pure CO2 has to be mixed with incoming air. Further optimization of the DCFC and the system is needed to obtain a larger fraction of the output streams as pure CO2 for sequestration or re-use.

Stability of YSZ and SDC in molten carbonate eutectics for hybrid direct carbon fuel cells

RSC Advances ◽  
2014 ◽  
Vol 4 (5) ◽  
pp. 2398-2403 ◽  
Author(s):  
Xiaoyong Xu ◽  
Wei Zhou ◽  
Zhonghua Zhu
Keyword(s):  
Fuel Cells ◽  
Molten Carbonate ◽  
Direct Carbon Fuel Cells

scholarly journals Electrode reaction mechanisms in molten carbonate fuel cells

1989 ◽  
Author(s):  
J Selman ◽  
T Nishina ◽  
Y Lin ◽  
E Yeager ◽  
D Tryk
Keyword(s):  
Fuel Cells ◽  
Reaction Mechanisms ◽  
Electrode Reaction ◽  
Molten Carbonate ◽  
Molten Carbonate Fuel Cells

Direct Carbon Fuel Cells – Wetting behavior of graphitic carbon in molten carbonate

2016 ◽  
Vol 41 (41) ◽  
pp. 18858-18871 ◽  
Author(s):  
Feng Peng ◽  
Yue Li ◽  
Philip Nash ◽  
John F. Cooper ◽  
Satish J. Parulekar ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Graphitic Carbon ◽  
Molten Carbonate ◽  
Wetting Behavior ◽  
Direct Carbon Fuel Cells
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