文献类型：期刊文献

英文题名：Counter-flow formic acid microfluidic fuel cell with high fuel Utilization exceeding 90%

作者：Xu, Hong[1];Zhang, Hao[1];Wang, Huizhi[2];Leung, Dennis Y. C.[3];Zhang, Li[1];Cao, Jun[1];Jiao, Kui[4];Xuan, Jin[1,2]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh, Midlothian, Scotland;[3]Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China;[4]Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China

年份：2015

卷号：160

起止页码：930

外文期刊名：APPLIED ENERGY

收录：;EI(收录号：20150900586039);WOS:【SCI-EXPANDED(收录号:WOS:000364890700091)】；

基金：The research work presented in this paper is supported by the National Basic Research Program of China (973 Program) (2014CB748500) and project (51406057) supported by National Natural Science Foundation of China.

语种：英文

外文关键词：Counter-flow; High fuel utilization; Microfluidic fuel cell; Formic acid

摘要：Microfluidic fuel cell (MFC) is a promising energy source for portable applications, which draws lots of R&D attention. However, MFCs fed with hydrocarbon fuel like formic acid suffers low fuel utilization problem because of sluggish kinetics, complicate reaction condition and dilemma on cell control. In this work, a formic acid MFC based on counter-flow design is proposed. This counter-flow structure is verified a promising design for high Graetz number operation, which is especially beneficial for high fuel utilization manipulation of MFC. A breakthrough in fuel utilization is achieved and the highest fuel utilization of 91.4% is obtained at 1 mu L min(-1). It is revealed that counter-flow MFC is capable for low flow rate operation, which is significant for reduce the pump energy consumption and improve the energy efficiency of MFC system. Each potential loss involved in counter-flow MFC is categorized and it is found that potential loss caused by internal resistance hinders performance mostly. (C) 2015 Elsevier Ltd. All rights reserved.