.... In this study, we fabricate nanoporous Cu using chemical and electrochemical dealloying methods based on a Cu-Ga alloy. The effects of the dealloying conditions on the derived microstructure of the nanoporous metal and its evolution mechanisms are discussed. Analysis and control of the electrochemical...

...Alex P. Cocco; Kyle N. Grew The analytical transport network (ATN) model for flow through microstructural networks is extended to linearly coupled flows subject to Onsager reciprocity. Electrokinetic flow is used as an example system. Through the extension, we gain an improved understanding...

...Alex P. Cocco; Kyle N. Grew The analytical transport network (ATN) model was developed to study transport through heterogeneous and hierarchical microstructural networks. Here, ATN is extended to electrokinetic flow, a linear, coupled flow that satisfies Onsager’s reciprocity relations. In Part 1...

... been performed to compare the effects of microstructure on the performance of SOFCs and solid oxide electrolysis cells (SOECs) operating in H 2 –H 2 O and CO–CO 2 gas streams. Compared to the H 2 –H 2 O system, the power density of the CO–CO 2 system shows a greater sensitivity to pore microstructure...

... relatively high current density conditions. The optimization results are dependent on the operating conditions. The effects of inlet mass flow rates and fuel compositions are investigated. The proposed approach provides a systematical method for electrode microstructure designs of high performance SOFCs...

... structure in microscale or even in nanoscale. In this paper, the properties of nano-/microstructures are outlined, and the physical and chemical processes are analyzed on the Pt surfaces. A software package of automatic simulation environment is developed and applied to investigate the electronic structure...

... mV between 1.2 and 1.3 A ∕ cm 2 . The microstructure of the cathode was such that no gas diffusion problems occurred. 15 10 2007 11 01 2008 17 08 2009 Based on the electrochemical characteristics of the tested single cells, it was clear that electrochemical performance...

...-supported cells, namely, those employing either La 0.65 Sr 0.3 MnO 3 (LSM) or La 0.58 Sr 0.4 Co 0.2 Fe 0.8 O 3 − δ (LSCF) cathode materials. In both cases the optimization of processing and microstructural parameters resulted in satisfactory power output and long-term stability at reduced operation...

... with screen-printed porous CGO interlayer and a PSCF cathode was excellent. Even at 650 ° C , the area-specific resistance was lower than 0.5 Ω cm 2 . The microstructure of the cathode and the performance of this type of SOFC were not obviously affected by variations in the sintering temperature...

... Catalyst was then sprayed onto the surface with the micropillars to complete the fabrication of the cathode. Manufacturing processes of the HMPS electrode includes the following: (1) coat the surface of carbon cloth with PTFE-C; (2) flatten the coating so that microstructure may be built; (3...

.... In comparison, similar microstructural characteristics were found for Ce 0.8 M 0.2 O 2 − δ ( M = Mn , Fe , Cu ) . However, Ce 0.8 Ni 0.2 O 2 − δ exhibits poor microstructure with large cracks. The electrochemical oxidation of wet hydrogen and wet methane was investigated with impedance spectroscopy by using...

...-Dimensional Microstructural Permeability Prediction of Porous Fibrous Media With and Without Compaction ,” Int. J. Numer. Methods Eng. 0029-5981 , 60 , pp. 1741 – 1757 . Acosta , M. , Merten , C. , Eigenberger , G. , Class , H. , Helmig , R. , Thoben , B. , and Müller...

...Josef Mertens; Vincent A. C. Haanappel; Christian Wedershoven; Hans-Peter Buchkremer One of the main targets in the development of anode-supported solid oxide fuel cell (SOFCs) is to improve the electrochemical performance. This can be achieved by optimizing processing and microstructural...

... been taken at Forschungszentrum Jülich to lower the operating temperatures while maintaining the power output. This was achieved by optimizing processing and microstructural parameters of the electrodes. This paper presents the latest results concerning performance improvement through variations...

... compounds manganese compounds solid oxide fuel cell (SOFC) cathode LSM microstructure anode-supported During the last few decades, research on solid oxide fuel cells (SOFCs) has been significantly intensified. Research targets the improvement of long-term durability and reliability...