文献类型：期刊文献

英文题名：Enabling high-concentrated fuel operation of fuel cells with microfluidic principles: A feasibility study

作者：Zhang, Hao[1,2]; Xuan, Jin[1,2]; Xu, Hong[1]; Leung, Michael K.H.[2]; Leung, Dennis Y.C.[3]; Zhang, Li[1]; Wang, Huizhi[3]; Wang, Lei[3]

机构：[1] State-Key Laboratory of Chemical Engineering, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China; [2] Ability R and D Energy Research Centre, School of Energy and Environment, City University of Hong Kong, Hong Kong, Hong Kong; [3] Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, Hong Kong

年份：2013

卷号：112

起止页码：1131

外文期刊名：Applied Energy

收录：EI(收录号：20133816768549)

语种：英文

外文关键词：Concentration (process) - Fuel cells - Microelectronics - Nonlinear equations - Maxwell equations

摘要：Liquid fuel cells operated at room-temperature are promising candidates for the next-generation of power sources for microelectronic devices. Enabling high-concentrated or even neat fuel operation of fuel cells, which is currently limited by adverse fuel crossover through membrane, could significantly improve the cell current density, reversible potential and energy density. Herein, microfluidic tools are proposed to solve the crossover problem. A three-dimensional numerical model for air-breathing microfluidic fuel cell (MFC) fed with concentrated formic acid is developed. The model couples CFD with electrochemical kinetics to account for the complex interactions inside the cell. Maxwell-Stefan equations are used to describe the nonlinear behaviors in the electrolyte. Based on the model analysis, the feasibility of concentrated fuel operation has been proved. Nonlinear diffusion characteristics, mass transport and performance of MFC cell are analyzed. ? 2013 Elsevier Ltd.