Development and characteristics of a membraneless microfluidic fuel cell array

Huizhi Wang, Shunjie Gu, Dennis Y. C. Leung, Hong Xu, Michael K. H. Leung, Li Zhang, Jin Xuan

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)467-477
Number of pages11
JournalElectrochimica Acta
Volume135
DOIs
Publication statusPublished - 20 Jul 2014

Keywords

  • Membraneless fuel cell
  • Formic acid
  • Hydrogen peroxide
  • Microfluidics
  • Scale out
  • Shunt current analysis
  • REDOX-FLOW BATTERY
  • LAMINAR-FLOW
  • SHUNT CURRENT
  • HYDROGEN-PEROXIDE
  • CATHODE CATALYST
  • ALKALINE
  • STACK
  • PERFORMANCE
  • ELECTRODE
  • TEMPERATURE

Cite this

Wang, H., Gu, S., Leung, D. Y. C., Xu, H., Leung, M. K. H., Zhang, L., & Xuan, J. (2014). Development and characteristics of a membraneless microfluidic fuel cell array. Electrochimica Acta, 135, 467-477. https://doi.org/10.1016/j.electacta.2014.04.165