A. Nyman, M. Behm, and G. Lindbergh
Applied Electrochemistry, School of Chemical Science and Engineering, Royal Institute of Technology Stockholm, Sweden
Modeling of mass transport is an important step in evaluating lithium-ion battery electrolytes and understanding cell performance. For high-power applications, concentration gradients in the electrolyte lead to limiting currents, which limit the power-density of the battery. The model has been used for determining a complete set of transport and thermodynamic properties for LiPF6 dissolved in an ...
Keisoku Engineering System Co., Tokyo, Japan
The tertiary current distributions on the wafer in a plating cell are studied in this work. An acid copper sulfate electrolyte composed of CuSO4/5H2O of 2.4 g/L and H2SO4 of 90 g/L is taken into account for copper deposition on the wafer. The solution of shear-plate agitating fluid dynamics is coupled into the calculation of tertiary current distributions. The obtained distributions of tertiary ...
Dependence of the Current Density Distribution with Flow Channel Geometry in a Half-Cell Model - new
O. Beruski, J. Perez
Institute of Chemistry of São Carlos, São Carlos, SP, Brazil
The present work demonstrates that a simple half-cell model is capable of reproducing qualitatively the main features of the measurements of the current density distribution in a high-temperature polymer electrolyte fuel cell, pointing that computational modeling and simulation are an important tool in the development of such devices. Our main interests with such a model is to optimize working ...
Computational Modelling of Fluid Dynamics in Electropolishing of Radiofrequency Accelerating Cavities - new
H. Rana, L. Ferreira
Loughborough University, Leicestershire, UK
European Organisation for Nuclear Research (CERN), Genéve, Switzerland
Electropolishing is an electrochemical process that radiofrequency accelerating cavities undergo in order to improve their inner metal surface finishing. This is performed prior to their installation into particle accelerators, in order to enhance their accelerating properties. Using COMSOL Multiphysics® software it was possible to model the process throughout the cavity and study the fluid ...
M. Hackert-Oschätzchen , N. Lehnert , C. Scherf , A. Martin , M. Penzel , A. Schubert ,
 Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany
 Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany
 Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany; Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany
At the Technische Universität Chemnitz several academic institutions work on aluminum matrix composites (AMCs) within the Collaborative Research Centre SFB 692 HALS. Besides the development and analysis of these materials one main task is finishing machining of AMCs by an electrochemical machining (ECM) process. One possible method of ECM is electrochemical machining with continuous electrolytic ...
Finite Element Analysis of an Enzymatic Biofuel Cell: The Orientations of a chip inside a blood artery
C. Wang, Y. Parikh, Y. Song, and J. Yang
Mechanical & Materials Science Engineering, Florida International University, Miami, Florida, USA
Output performance of an implantable enzymatic biofuel cell (EBFC) with three- dimensional highly dense micro-electrode arrays has been simulated with a finite element analysis approach. The purpose of this research is to optimize the orientation of this EBFC chip inside a blood artery such that the mass transport of glucose around all the micro-electrodes can be improved and hence output ...
O. Ighodaro, K. Scott
Newcastle University, Newcastle upon Tyne, United Kingdom
Solid oxide fuel cells (SOFCs) are expected to play a major role in future energy systems due to their wide range of applications, high energy efficiency, environmental friendliness and good fuel flexibility. While conventional high temperature SOFCs operate at about 1000C, there is growing interest in intermediate temperature SOFCs which operates between 600C and 800C allowing for wider range ...
S. T. Aruna , S. Senthil, S. Chauhan , B. Shriprakash ,
 CSIR-National Aerospace Laboratories, Bangalore, Karnataka, India.
SOFC is a high temperature electrochemical device known for its fuel flexibility. Apart from using pure hydrogen, it can utilize CO (carbon monoxide), CH4 (methane) or any other higher hydrocarbon. Since methane is highly researched hydrocarbon fuel, it was chosen to start with. The most prominent problem faced while using hydrocarbon fuel in SOFC is the formation and deposition of carbon on the ...
王琼 , 屈治国 ,
钒液流电池储能技术作为高效电化学储能技术之一，可应用于新能源储能，电网削峰填谷、调频调幅、应急电源等。钒液流电池储能技术具有独立的的额定功率和额定能量，高输出功率，低成本等特点。本文采用分区建模，模型耦合的方式进行模拟。 结果: 钒液流电池在组装过程中需要一定的组装压力以避免电解液的泄漏，同时可减小电极与集流板的接触电阻。如图1所示，有研究表明有流道的集流板与石墨毡电极接触并挤压时，由于流道脊与流道的不均匀表面，会使石墨毡电极出现非均匀压缩现象。图2为均匀模型(SU-5)与非均匀模型(SNI-5)电池压降与实验结果(Exp-5)在CR=55.67%的对比。结果显示考虑了石墨非均匀压缩导致的变形之后的模拟结果与实验结果相吻合。图3为非均匀模型与均匀模型在CR=41.83%情况下的对比图。如图所示，非均匀模型浓度分布更加均匀，将产生比较小的过电势 ...
F. Daouda, J. Hamelin, P. Benard, S. Kumar Natarajan 
Insitut de recherche sur l'hydrogène, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
We present a novel multi-layered electrode fabrication technique for polymer electrolyte membrane fuel cells (PEMFCs). This method consists of alternate layers of Pt deposition (0.05 mg/cm²) by sputtering on the painted multi-walled carbon-Nafion layer (CNL) with larger concentration of catalyst particles closer to the membrane. Parametric models were developed and validated by experimental ...