@article{oai:ynu.repo.nii.ac.jp:00010838,
 author = {Konosuke, Watanabe and Takuto, Araki and Takuya, Tsujiguchi and Gen, Inoue},
 journal = {Journal of the Electrochemical Society},
 month = {Sep},
 note = {Direct formic acid fuel cells (DFAFCs) have received considerable attention because they can generate a higher power density compared to other direct liquid fuel cells. However, when generated CO_2 bubbles are retained in the anode's porous transport layer (PTL), the performance of the DFAFCs deteriorates. The gas–liquid two-phase flow behavior within a PTL is not clear; therefore, in this work the power-generation characteristics of DFAFCs using two types of PTL, carbon paper and carbon cloth, were investigated. It was found that the maximum current density was approximately 60 mA cm^−2 higher with the carbon cloth than with the carbon paper. The CO_2 bubble distribution in the anode's PTLs was visualized by X-ray computed tomography and discuss the effects of the bubbles on the power-generation performance of DFAFCs. We found that interstices in a carbon-cloth PTL provided pathways for bubble migration and release to the channel, so that the bubbles did not deteriorate the power output. Bubble accumulation in a carbon-paper PTL led to a drop in power output, confirming that the structure of the PTL and the CO_2 bubbles affect the power-generation characteristics.},
 title = {Influence of the Diffusion Media Structure for the Bubble Distribution in Direct Formic Acid Fuel Cells},
 year = {2020}
}