APPROACHES TO IMPROVING EFFICIENCY OF SOLID OXIDE FUEL CELLS BASED ON CERAMIC MEMBRANES WITH MIXED CONDUCTIVITY

2021 ◽  
Vol 90 ◽  
Author(s):  
Elena Yur'evna Pikalova ◽  
Elena Grigor'evna Kalinina
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Ceramic Membranes ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Mixed Conductivity

scholarly journals Utilisation of methylcellulose as a shaping agent in the fabrication of Ba0.95Ca0.05Ce0.9Y0.1O3 proton-conducting ceramic membranes via the gelcasting method

2019 ◽  
Vol 138 (3) ◽  
pp. 2077-2090 ◽  
Author(s):  
Magdalena Dudek ◽  
Bartłomiej Lis ◽  
Elwira Kocyło ◽  
Alicja Rapacz-Kmita ◽  
Michał Mosiałek ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Evolved Gas Analysis ◽  
Diffraction Method ◽  
Ceramic Membranes ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Scanning Calorimetry ◽  
Proton Conducting ◽  
Isostatic Pressing

Abstract The gelcasting method was used to form gastight Ba0.95Ca0.05Ce0.9Y0.1O3 samples proposed for use as proton-conducting electrolytes in solid oxide fuel cells. Methylcellulose was used as an environmentally friendly shaping agent for Ba0.95Ca0.05Ce0.9Y0.1O3 powder in an ethanol solution. Samples of Ba0.95Ca0.05Ce0.9Y0.1O3 were also prepared from the same powder via traditional isostatic pressing, as a reference for cast samples, and sintered in the same conditions. Comparative studies of the physicochemical properties of Ba0.95Ca0.05Ce0.9Y0.1O3 electrolytes, formed by means of these two methods and then sintered at 1550 °C for 2.5 h, were presented and discussed. Using the X-ray diffraction method, only the pure orthorhombic phase of BaCe0.9Y0.1O3 was detected in the Ba0.95Ca0.05Ce0.9Y0.1O3 powder, as well as in the Ba0.95Ca0.05Ce0.9Y0.1O3 sintered pellets formed via both gelcasting (A) and isostatic pressing (B). Thermal effects occurring during heating of methylcellulose, as well as ceramic Ba0.95Ca0.05Ce0.9Y0.1O3 powder, dried cast samples obtained from the prepared slurry, and sintered Ba0.95Ca0.05Ce0.9Y0.1O3 samples, were examined by differential scanning calorimetry, differential thermal analysis, thermogravimetric analysis, and evolved gas analysis of volatile products using a quadrupole mass spectrometer. The measurements were performed within the temperature range of 20–1200 °C in air. Based on dilatometric tests, it was found that the Ba0.95Ca0.05Ce0.9Y0.1O3 cast samples exhibited slightly higher degree of sinterability than the 5CBCY samples obtained by isostatic pressing. In comparison with pressed pellets, higher values of total electrical conductivity in air or in a gas mixture of 5% H2 in Ar were also attained for Ba0.95Ca0.05Ce0.9Y0.1O3 cast samples. The Ba0.95Ca0.05Ce0.9Y0.1O3 samples were used to construct oxygen–hydrogen electrolytes for solid oxide fuel cells. The results of the electrochemical performance of solid oxide fuel cells with Ba0.95Ca0.05Ce0.9Y0.1O3 electrolytes were comparable to the data in the literature on BaCe0.9Y0.1O3 electrolytes. An electrochemical study of a Ba0.5Sr0.5Co0.8Fe0.2O3−δ|Ba0.95Ca0.05Ce0.9Y0.1O3 interface was also performed. Ba0.5Sr0.5Co0.8Fe0.2O3−δ appears to be a suitable cathode material for a Ba0.95Ca0.05Ce0.9Y0.1O3 electrolyte.

scholarly journals Characterization of laser-processed thin ceramic membranes for electrolyte-supported solid oxide fuel cells

2017 ◽  
Vol 42 (19) ◽  
pp. 13939-13948 ◽  
Author(s):  
J.A. Cebollero ◽  
R. Lahoz ◽  
M.A. Laguna-Bercero ◽  
J.I. Peña ◽  
A. Larrea ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Ceramic Membranes ◽  
Solid Oxide ◽  
Oxide Fuel

Ultra-Thin Flexible Ceramic Membranes for Electronic Applications

2013 ◽  
Vol 2013 (1) ◽  
pp. 000379-000383
Author(s):  
John A. Olenick
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Thermal Shock ◽  
Elevated Temperatures ◽  
Ceramic Membranes ◽  
Oxygen Sensors ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Stabilized Zirconia ◽  
Gas Tight

In 2010, ENrG Incorporated commercialized 40 microns thick, flexible zirconia based ceramic membranes as shown in Figure 1. Even though so thin, the membranes are gas-tight, fully dense, strong, thermal shock tolerant and chemically inert. Historically, zirconia membranes are used mainly for applications such as solid oxide fuel cells and oxygen sensors, making use of the ionic property of partially stabilized zirconia at elevated temperatures.

Effect of an Anode Functional Layer on Cell Performance of Anode-Supported Solid Oxide Fuel Cells by a Decalcomania Method

2013 ◽  
Vol 51 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Sun-Min Park ◽  
Hae-Ran Cho ◽  
Byung-Hyun Choi ◽  
Yong-Tae An ◽  
Ja-Bin Koo ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Cell Performance ◽  
Oxide Fuel ◽  
Functional Layer
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