scholarly journals A Thermally Self-Sustaining Miniature Solid Oxide Fuel Cell

2009 ◽  
Vol 6 (4) ◽  
Author(s):  
Jeongmin Ahn ◽  
Paul D. Ronney ◽  
Zongping Shao ◽  
Sossina M. Haile
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Thermal Environment ◽  
Integrated System ◽  
Solid Oxide ◽  
Small Scale ◽  
Oxide Fuel ◽  
Optimal Regime ◽  
Single Chamber

A thermally self-sustaining miniature power generation device was developed utilizing a single-chamber solid oxide fuel cell (SOFC) placed in a controlled thermal environment provided by a spiral counterflow “Swiss roll” heat exchanger and combustor. With the single-chamber design, fuel/oxygen crossover due to cracking of seals via thermal cycling is irrelevant and coking on the anode is practically eliminated. Appropriate SOFC operating temperatures were maintained even at low Reynolds numbers (Re) via combustion of the fuel cell effluent at the center of the Swiss roll. Both propane and higher hydrocarbon fuels were examined. Extinction limits and thermal behavior of the integrated system were determined in equivalence ratio—Re parameter space and an optimal regime for SOFC operation were identified. SOFC power densities up to 420 mW/cm2 were observed at low Re. These results suggest that single-chamber SOFCs integrated with heat-recirculating combustors may be a viable approach for small-scale power generation devices.

scholarly journals A Thermally Self-Sustaining Miniature Solid Oxide Fuel Cell

2007 ◽  
Author(s):  
Jeongmin Ahn ◽  
Paul D. Ronney ◽  
Zongping Shao ◽  
Sossina M. Haile
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Thermal Environment ◽  
Integrated System ◽  
Solid Oxide ◽  
Small Scale ◽  
Oxide Fuel ◽  
Optimal Regime ◽  
Single Chamber

A thermally self-sustaining miniature power generation device was developed utilizing a single-chamber solid oxide fuel cell (SOFC) placed in a controlled thermal environment provided by a spiral counterflow “Swiss roll” heat exchanger and combustor. With the single-chamber design, fuel/oxygen crossover due to cracking of seals via thermal cycling is irrelevant and coking on the anode is practically eliminated. Appropriate SOFC operating temperatures were maintained even at low Reynolds numbers (Re) via combustion of the fuel cell effluent at the center of the Swiss roll. Both propane and higher hydrocarbon fuels were examined. Extinction limits and thermal behavior of the integrated system were determined in equivalence ratio - Re parameter space and an optimal regime for SOFC operation was identified. SOFC power densities up to 420 mW/cm2 were observed at low Re. These results suggest that single-chamber SOFC’s integrated with heat-recirculating combustors may be a viable approach for small-scale power generation devices.

Single Chamber Solid Oxide Fuel Cell Using BaLaIn2O5.5 Electrolyte

2006 ◽  
Vol 45 ◽  
pp. 1875-1878 ◽  
Author(s):  
Mitsuhiro Hibino ◽  
Dai Michiba ◽  
Kenichi Kanatani ◽  
Hiroaki Suzuki ◽  
Takeshi Yao
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Single Cell ◽  
High Voltage ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Air Power ◽  
Single Chamber ◽  
In Series

BaLaIn2O5.5 (BLI) is examined as an electrolyte of a single chamber fuel cell using a mixture gas of methane and air. Power generation of the single cell is investigated with varying supply rates of methane and air. Furthermore, two cells are connected in series in the single chamber for high voltage and we evaluate the performance of the system.

An all porous solid oxide fuel cell (SOFC): a bridging technology between dual and single chamber SOFCs

2013 ◽  
Vol 6 (7) ◽  
pp. 2119 ◽  
Author(s):  
Youmin Guo ◽  
Mehdi Bessaa ◽  
Sonia Aguado ◽  
Marlu Cesar Steil ◽  
Damien Rembelski ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Solid Oxide ◽  
Porous Solid ◽  
Oxide Fuel ◽  
Single Chamber

A novel single chamber solid oxide fuel cell based on chemically stable thin films of Y-doped BaZrO3 proton conducting electrolyte

2010 ◽  
Vol 3 (5) ◽  
pp. 618 ◽  
Author(s):  
Emiliana Fabbri ◽  
Alessandra D'Epifanio ◽  
Simone Sanna ◽  
Elisabetta Di Bartolomeo ◽  
Giuseppe Balestrino ◽  
...  
Keyword(s):  
Thin Films ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Proton Conducting ◽  
Single Chamber

Doped Ceria Based Solid Oxide Fuel Cell Electrolytes and their Sintering Aspects: An Overview

2016 ◽  
Vol 835 ◽  
pp. 199-236 ◽  
Author(s):  
Pradyot Datta
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Operating Temperature ◽  
Solid Oxide ◽  
Ion Conductivity ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion

Depletion of fossil fuel at an alarming rate is a major concern of humankind. Consequently, researchers all over the world are putting a concerted effort for finding alternative and renewable energy. Solid oxide fuel cell (SOFC) is one such system. SOFCs are electrochemical devices that have several advantages over conventional power generation systems like high efficiency of power generation, low emission of green house gases and the fuel flexibility. The major research focus of recent times is to reduce the operating temperature of SOFC in the range of 500 to 700 °C so as to render it commercially viable. This reduction in temperature is largely dependent on finding an electrolyte material with adequate oxygen ion conductivity at the intended operating temperature. One much material is Gadolinia doped Ceria (CGO) that shows very good oxygen ion conductivity at the intended operation temperature. The aim of this overview is to highlight the contribution that materials chemistry has made to the development of CGO as an electrolyte.

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