Effect of type and stoichiometry of fuels on performance of polybenzimidazole-based proton exchange membrane fuel cells operating at the temperature range of 120–160 °C

Sung Kwan Ryu, Mohanraj Vinothkannan, Ae Rhan Kim and Dong Jin Yoo

Energy, 2022, vol. 238, issue PB

Abstract: Herein, a proton exchange membrane fuel cell (PEMFC) equipped with phosphoric acid-doped polybenzimidazole (PA-PBI) membrane was exploited to determine the effects of changing type and stoichiometry of feed gas at operating temperature from 120 to 160 °C. Results show that maximum power density of proposed system increases as increasing temperature, and varying the type and stoichiometry of feed gas. For example, a typical power density of 0.254, 0.299 and 0.389 W/cm2 was obtained when operating PEMFC at 120, 140 and 160 °C respectively with pure hydrogen (H2) as feed gas. By contrast, power density of only 0.128, 0.194 and 0.243 W/cm2 was achieved when operating the PEMFC under identical condition with reformed H2 as feed gas. On the other hand, when varying oxygen (O2) stoichiometry from 2 to 6, power density of PEMFC vary from 0.330 to 0.472 W/cm2 at 160 °C. At high temperature and high O2 diffusion rate, reaction kinetics of electrodes and membrane were boosted, resulting lower mass-transfer resistance and higher PEMFC performance. In addition, we conducted long-term operation of PEMFC at 160 °C for 500 h to examine durability of PA-PBI. PA-PBI membrane was not lose open circuit voltage (OCV) significantly, indicating its good PEMFC durability.

Keywords: PEMFC; PA-PBI membrane; High temperature; Feed gas; Durability test (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544221020399
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:238:y:2022:i:pb:s0360544221020399

DOI: 10.1016/j.energy.2021.121791

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().