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Kinetic studies of anode materials f...

Das, Rupak.

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Kinetic studies of anode materials for solid oxide fuel cell (SOFC).

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Kinetic studies of anode materials for solid oxide fuel cell (SOFC)./
作者:	Das, Rupak.
面頁冊數:	112 p.
附註:	Source: Dissertation Abstracts International, Volume: 74-10(E), Section: B.
Contained By:	Dissertation Abstracts International74-10B(E).
標題:	Engineering, Materials Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3565904
ISBN:	9781303164170

Kinetic studies of anode materials for solid oxide fuel cell (SOFC).
Das, Rupak.

Kinetic studies of anode materials for solid oxide fuel cell (SOFC). - 112 p.

Source: Dissertation Abstracts International, Volume: 74-10(E), Section: B.

Thesis (Ph.D.)--The University of Alabama, 2013.

Planar solid oxide fuel cells (SOFCs) were designed, fabricated, characterized and optimized in order to a) Develop a Nickel-free anode for SOFCs, b) Increase the total electrical conductivity of the crack-free composite in intermediate temperature zones, c) Establish defect chemistry formulations for the Mixed electrode systems, d) Confirm the stability issues of the anodes in reducing atmosphere, e) Weigh less compared to established YSZ-architectured predominant fuel cells, f) Incur less cost compared to YSZ predominant similar fuel cells, g) Produce more power output at low concentration of Hydrogen input, h) Optimize anode composition for best performance in the prevalent same size and temperature range and i) Validate the computational model.

ISBN: 9781303164170Subjects--Topical Terms:

1017759
Engineering, Materials Science.

Kinetic studies of anode materials for solid oxide fuel cell (SOFC).
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245 1 0 $a Kinetic studies of anode materials for solid oxide fuel cell (SOFC).
300 $a 112 p.
500 $a Source: Dissertation Abstracts International, Volume: 74-10(E), Section: B.
500 $a Adviser: Ramana G. Reddy.
502 $a Thesis (Ph.D.)--The University of Alabama, 2013.
520 $a Planar solid oxide fuel cells (SOFCs) were designed, fabricated, characterized and optimized in order to a) Develop a Nickel-free anode for SOFCs, b) Increase the total electrical conductivity of the crack-free composite in intermediate temperature zones, c) Establish defect chemistry formulations for the Mixed electrode systems, d) Confirm the stability issues of the anodes in reducing atmosphere, e) Weigh less compared to established YSZ-architectured predominant fuel cells, f) Incur less cost compared to YSZ predominant similar fuel cells, g) Produce more power output at low concentration of Hydrogen input, h) Optimize anode composition for best performance in the prevalent same size and temperature range and i) Validate the computational model.
520 $a There's a huge demand of Nickel-free anode in the SOFC world due to several reasons like diminishing the weight, cost, resistivity and dissipation of energy. All the aforementioned major factors point individually towards the same direction -- "development of novel anodes" from the materials' point of view operating at intermediate temperatures of 500--800°C or less. This study deals with developing a novel anode material conforming to all the above mentioned requirements in the same size and temperature range via modeling/validation, partial pressure and kinetic studies, microstructural analyses, diffraction techniques, polarization measurements, electro-chemical impedance and porosity studies. The average conductivity values found out to be 1.691, 0.0651, 0.0543 and 0.0148 s/cm respectively at 700, 600, 500 and 400°C in pure Hydrogen atmosphere. The avg. conductivity at 700°C is more than 5 times the value obtained from the GDC-CNF experiments and is believed to have been obtained with the better transport properties of the GDC-CNF matrix. Activation energy calculation were performed from the plot of ln (conductivity) vs. 1/T and found out to be .75 & .42 evs which are better comparable to the literature values by Zhu et al.1 The bulk resistance (Rb) values got decreased dramatically in pure Hydrogen atmosphere from 2.169 (400 °C) to 0.019 (700 °C) ohms.
520 $a 1 Zhu, Deevi, Mater. Sci. Eng. A 362 (2003) 228.
590 $a School code: 0004.
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Alternative Energy. $3 1035473
650 4 $a Energy. $3 876794
690 $a 0794
690 $a 0363
690 $a 0791
710 2 $a The University of Alabama. $b Metallurgical and Materials Engineering. $3 2094943
773 0 $t Dissertation Abstracts International $g 74-10B(E).
790 $a 0004
791 $a Ph.D.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3565904