Fuel crossover in direct formic acid fuel cells

Kyoung Jin Jeong, Craig M. Miesse, Jong Ho Choi, Jaeyoung Lee, Jonghee Han, Sung Pil Yoon, Suk Woo Nam, Tae Hoon Lim, Tai Gyu Lee

Research output: Contribution to journalArticlepeer-review

127 Citations (Scopus)


This work studies formic acid crossover in a direct formic acid fuel cell under different operating conditions. Comparison with methanol crossover in a direct methanol fuel cell is included. The effects of cell conditioning, temperature, fuel concentration, and Nafion® thickness on the rate of formic acid crossover are examined. The effects of temperature, concentration, and membrane thickness are qualitatively similar to those with methanol, but overall crossover rates are much lower. Under the same operating conditions, it is found that formic acid has a crossover flux rate that is approximately one-sixth that of methanol. Measurement of the CO2 membrane permeation flux is performed to determine its contribution to a bias that it might cause in the quantification of crossover.

Original languageEnglish
Pages (from-to)119-125
Number of pages7
JournalJournal of Power Sources
Issue number1 SPEC. ISS.
Publication statusPublished - 2007 May 25

Bibliographical note

Funding Information:
This work was financially supported by the Korea Institute of Science and Technology.

Copyright 2018 Elsevier B.V., All rights reserved.


  • Carbon dioxide
  • Cell conditioning
  • Direct formic acid fuel cell
  • Fuel crossover
  • Nafion

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


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