文献类型：期刊文献

英文题名：Development and characteristics of a membraneless microfluidic fuel cell array

作者：Wang, Huizhi[2,3];Gu, Shunjie[1,2];Leung, Dennis Y. C.[2];Xu, Hong[1];Leung, Michael K. H.[4];Zhang, Li[1];Xuan, Jin[1,2,3]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China;[3]Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland;[4]City Univ Hong Kong, Sch Energy & Environm, Abil R&D Energy Res Ctr, Kowloon Tong, Hong Kong, Peoples R China

年份：2014

卷号：135

起止页码：467

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20142417814929);WOS:【SCI-EXPANDED(收录号:WOS:000339692600060)】；

基金：The research work presented in this paper was supported by the CRCG of the University of Hong Kong, the National Basic Research Program of China (973 Program) (2014CB748500), Shanghai Pujiang Program (12PJ1402100), the Fundamental Research Funds for the Central Universities (WG1214029) and the Young Teachers Program of Universities in Shanghai (ZZHLG12012).

语种：英文

外文关键词：Membraneless fuel cell; Formic acid; Hydrogen peroxide; Microfluidics; Scale out; Shunt current analysis

摘要：Membraneless microfluidic fuel cells ((MFCs)-F-2) are promising portable power sources, but they suffer from limited scalability. This paper presents a scaling-out strategy for general (MFC)-F-2 applications with their characteristics studied by both experiments and mathematical modeling. The present strategy addresses the issues of flow distribution non-uniformity and shunt current losses by integrating a well-designed fluid circuit. With the present strategy, parallel and series connections of four cells in an array results in a scaling-out efficiency of 93% and 82%, respectively. The effects of different parameters on the array performance as well as further device scalability are also investigated in this paper. Preferable conditions for the array operation include a high branch ionic resistance, small unit cell difference and high unit-cell performance, which can be achieved by appropriately designing the branch geometry, employing high-precision fabrication/assembly techniques and improving the single-cell materials/chemistries. It is expected that the present array can be incremented to 50 cells or above in series with over 75% efficiency as long as there is sufficiently high branch resistance or cell performance. (C) 2014 Elsevier Ltd. All rights reserved.