Manipulation of Electrode Composition for Effective Water Management in Fuel Cells Fed with an Electrically Rechargeable Liquid Fuel

Xingyi Shi, Xiaoyu Huo, Oladapo Christopher Esan, Yichen Dai, Liang An, T. S. Zhao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

The liquid fuel cell, with its high energy density and ease of fuel handling, has attracted great attention worldwide. However, its real application is still being greatly hindered by its limited power density. Hence, the recently proposed and demonstrated fuel cell, using an electrically rechargeable liquid fuel (e-fuel), is believed to be a candidate with great potential due to its significant performance advancement. Unlike the conventional alcoholic liquid fuels, the e-fuel possesses excellent reactivity, even on carbon-based materials, which therefore allows the e-fuel cell to achieve superior performance without any noble metal catalysts. However, it is found that, during the cell operation, the water generated at the cathode following the oxygen reduction reaction could lead to a water flooding problem and further limit the cell performance. To address this issue, in this work, by manipulating the cathode composition, a blended binder cathode using both Nafion and polytetrafluoroethylene as binding agents is fabricated and demonstrated its superiority in the fuel cell to achieve an enhanced water management and cell performance. Furthermore, using the developed cathode, a fuel cell stack is designed and fabricated to power a 3D-printed toy car, presenting this system as a promising device feasible for future study and real applications.

Original languageEnglish
Pages (from-to)18600-18606
Number of pages7
JournalACS Applied Materials and Interfaces
Volume14
Issue number16
DOIs
Publication statusPublished - 27 Apr 2022

Keywords

  • E-fuel
  • fuel cell
  • stack
  • water flooding
  • water management

ASJC Scopus subject areas

  • Materials Science(all)

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