The cathode/electrolyte LSCF48/YDC15 couple is a building block of a new innovative and competitive design of a high temperature fuel cell, operating in the range between 600 and 700°C. It is based on the idea for a junction between a proton conducting SOFC (PCFC) anode/electrolyte part and a SOFC cathode/electrolyte part through a mixed H and O conducting porous ceramic membrane. Thus, in this...

As the integrated circuits (ICs) are scaled into nanometer dimensions and operate in giga-hertz frequencies, interconnect design and optimization have become critical in determining system performance and reliability. This paper presents the ongoing research effort at UCLA to develop an interconnect-centric design flow, including interconnect planning, interconnect synthesis, and interconnect l...

Deep submicron technology makes interconnect one of the main factors determining the circuit performance. Previous work shows that interconnect parameters exhibit a significant amount of spatial variation. In this work, we develop approaches to study the influence of the interconnect variation on circuit performance and to evaluate the circuit sensitivity to interconnect parameters. First, an a...

Anode-supported micro-tubular solid oxide fuel cell (SOFC) offers many advantages over the electrolyte and cathode-supported confgurations in terms of simplicity, reliability, and efciency. In such design, the anode substrates should possess a highly porous structure, provide active sites reaction as well as serving good mechanical strength. This structure is desired to ...

An optimal parameter estimation methodology of solid oxide fuel cell (SOFC) using modern optimization is proposed in this paper. equilibrium optimizer (EO) has been used to identify the unidentified parameters SOFC equivalent circuit with assistance experimental results. This presented via formulating modeling process as an problem considering sum mean squared error (SMSE) between observed and ...

New oxides of the (NdSr)n+1MO3n+1 (M = Co and Mn or Fe) series are reported. Compounds of composition NdSrCo0.75Fe0.25O4.10, NdSrCo0.75Mn0.25O4.08 and Nd0.5Sr1.5Co0.75Mn0.25O3.86 are the n = 1 members of the Ruddlesden-Popper homologous series (K2NiF4 structural type) as determined by X-ray diffraction and different transmission electron microscopy techniques. Their crystal structure consists o...

The goal of this work is to investigate the feasibility of a hybrid solid oxide fuel cell (SOFC) and gas turbine (GT) system for mobile power production. A system consisting of a gas turbine, a burner, and an SOFC is examined to gain fundamental understanding of the system dynamics. A control oriented dynamic model is developed to provide the critically needed tool for system feasibility analys...

Our interest in the exchange reaction of oxygen between the gas phase and oxides is twofold: (i) to understand the mechanistic details of one of the "simplest" gas-solid reactions which nevertheless exhibits an astonishing complexity in terms of reaction pathways, (ii) to use this knowledge for improving electrochemical devices which rely critically on a fast oxygen incorporation rate such as c...