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Full-Text Articles in Engineering

Rational Design Of Mixed Ionic And Electronic Conducting Perovskite Oxides For Solid Oxide Fuel Cell Anode Materials: A Case Study For Doped Srtio3, Suwit Suthirakun, Guoliang Xiao, Salai Ammal, Fanglin Chen, Hans-Conrad Zur Loye, Andreas Heyden May 2015

Rational Design Of Mixed Ionic And Electronic Conducting Perovskite Oxides For Solid Oxide Fuel Cell Anode Materials: A Case Study For Doped Srtio3, Suwit Suthirakun, Guoliang Xiao, Salai Ammal, Fanglin Chen, Hans-Conrad Zur Loye, Andreas Heyden

Salai C. Ammal

No abstract provided.


Preparation Of La0.8sr0.2ga0.83mg0.17o2.815 Powders By Microwave-Induced Poly(Vinyl Alcohol) Solution Polymerization, Yuling Zhai, Chang Ye, Feng Xia, Jianzhong Xiao, Lei Dai, Yifan Yang, Yongqian Wang Apr 2015

Preparation Of La0.8sr0.2ga0.83mg0.17o2.815 Powders By Microwave-Induced Poly(Vinyl Alcohol) Solution Polymerization, Yuling Zhai, Chang Ye, Feng Xia, Jianzhong Xiao, Lei Dai, Yifan Yang, Yongqian Wang

Dr. Chang Ye

A new and simple chemical route, named microwave-induced poly(vinyl alcohol) (PVA) solution polymerization, has been used to prepare fine, homogeneous and high-density pellets of purer La0.8Sr0.2Ga0.83Mg0.17O2.815 (denoted as LS0.2GM0.17). The effect of different contents of PVA as the polymeric carrier, was studied and we obtained an optimal amount of PVA (1.65:1 ratio of positively charged valences of the cations (Men+) to negatively charged hydroxyl (–OH−) groups of the organics), which could ensure homogenous distribution of the metal ions in the polymeric network structure and inhibit segregation. The behavior of the powder after calcination at different temperatures was studied. The PVA …


A Microwave-Induced Solution-Polymerization Synthesis Of Doped Lagao3 Powders, Yuling Zhai, Chang Ye, Jianzhong Xiao, Lei Dai Apr 2015

A Microwave-Induced Solution-Polymerization Synthesis Of Doped Lagao3 Powders, Yuling Zhai, Chang Ye, Jianzhong Xiao, Lei Dai

Dr. Chang Ye

A new method, called the microwave-induced solution-polymerization synthesis (denoted as MW), and the conventional Pechini (denoted as PH) method have been used to prepare powders of La0.8Sr0.2Ga0.83Mg0.17O2.815 (denoted as LS0.2GM0.17) and La0.8Sr0.2(Ga0.9Co0.1)0.83Mg0.17O2.815(denoted as LS0.2GCM0.17). A higher heating rate and a more homogenous heating manner without thermal gradients in the microwave oven resulted in a pure LSGCM powder after calcination at 1400 °C for 9 hours (h) and purer LSGM (6.2% secondary phases). The grain size of the pellets of the above two powders was 2–3 μm without segregation. The densities of LS0.2GM0.17/MW and LS0.2GCM0.17/MW pellets, sintered at 1400 °C for …


Synthesis And Characterization Of Sr-And Mg-Doped Lagao_3 Powders By Polyvinylpyrrolidone Microwave-Induced Solution Polymerization, Chang Ye, Yuling Zhai, Jian-Zhong Xiao Apr 2015

Synthesis And Characterization Of Sr-And Mg-Doped Lagao_3 Powders By Polyvinylpyrrolidone Microwave-Induced Solution Polymerization, Chang Ye, Yuling Zhai, Jian-Zhong Xiao

Dr. Chang Ye

A new chemical route,named microwave-induced polyvinylpyrrolidone(PVP) solution polymerization,has been used to prepare La0.8Sr0.2Ga0.83Mg0.17O2.815(denoted as LS0.2GM0.17) powder.The effect of different contents of PVP as the polymeric carrier was studied and we obtained the optimum amount of PVP,which could ensure the homogenous distribution of the metal ions in its polymeric network structure and inhibit their segregation from the solution.The behavior of the powder after calcination at different temperatures was studied.The PVP solution process consumed less organics compared with traditional Pechini process.Consequently,PVP was a more effective carrier in the preparation of LSGM.High heating rate and more homogenous heating manner without thermal gradient in …


Study Of A Renewable Biomass Powered Sofc, Yunhui Gong, Andrew Chien, Zhengping Mao, Kevin Huang Feb 2015

Study Of A Renewable Biomass Powered Sofc, Yunhui Gong, Andrew Chien, Zhengping Mao, Kevin Huang

Kevin Huang

The objective of this work is to explore a solution to utilize biomass carbon by a tubular solid oxide fuel cell integrated with an "in-situ" steam gasification reactor. Non-catalyzed and catalyzed coconut shell carbons were employed as solid fuels, which were directly converted to gaseous fuels to feed the SOFC operated at 800°. Single cells showed variable electrochemical performances according to the catalytic additives. Sample without catalysts exhibited low power density, while those with catalysts such as Fe2O3 and K2CO3 showed higher performances. The enhanced cell performance with catalysts was considered to be the …


La0.9−XCaXCe0.1Cro3−Δ As Potential Anode Materials For Solid Oxide Fuel Cells, Xihui Dong, Shuguo Ma, Kevin Huang, Fanglin Chen Feb 2015

La0.9−XCaXCe0.1Cro3−Δ As Potential Anode Materials For Solid Oxide Fuel Cells, Xihui Dong, Shuguo Ma, Kevin Huang, Fanglin Chen

Kevin Huang

No abstract provided.


Temperature-Dependent Residual Stresses In Plasma Sprayed Electrolyte Thin-Film On The Cathode Substrate Of A Solid Oxide Fuel Cell, Kevin Huang, H. Harter Feb 2015

Temperature-Dependent Residual Stresses In Plasma Sprayed Electrolyte Thin-Film On The Cathode Substrate Of A Solid Oxide Fuel Cell, Kevin Huang, H. Harter

Kevin Huang

No abstract provided.