The effect of humidification and temperature difference between PEMFC membrane to water transport phenomena

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The operating temperature of proton exchange membrane fuel cell (PEMFC) is only at 60∼70 °C. The water and thermal management have important roles in the fuel cell. Especially the water management, it can make fuel cell operate at optimal performance, and avoid drying and flooding phenomenon. This paper discusses the effects of humidification and temperature difference of anode and cathode to the water transport phenomenon in the PEMFC. By the mixing effects of electro-osmosis and back diffusion phenomenon in the membrane, it is hard to distinguish which one determines the major water transport. This paper aims to understand the determining effect of the two phenomena in high constant current density. The results show that electro-osmosis and back diffusion are greatly influenced by temperature difference. When the temperature of cathode is higher than anode, the electro-osmosis effect is suppressed and the water transport to cathode through membrane is low. On the contrary, when the temperature of cathode is lower than anode, the electro-osmosis effect is enhanced and the water transport to cathode through membrane is high. The back diffusion has the same trend with electro-osmosis. The effect is as obvious as the increase of the temperature difference between the membrane. With this tendency, we can control the water transport direction by change the temperature of inlet gas to manage the water balance of the fuel cell without cutting off the load.

Original languageEnglish
Title of host publication20th World Hydrogen Energy Conference, WHEC 2014
PublisherCommittee of WHEC2014
Pages246-252
Number of pages7
ISBN (Electronic)9780000000002
Publication statusPublished - 2014 Jan 1
Event20th World Hydrogen Energy Conference, WHEC 2014 - Gwangju, Korea, Republic of
Duration: 2014 Jun 152014 Jun 20

Publication series

Name20th World Hydrogen Energy Conference, WHEC 2014
Volume1

Other

Other20th World Hydrogen Energy Conference, WHEC 2014
CountryKorea, Republic of
CityGwangju
Period14-06-1514-06-20

Fingerprint

Proton exchange membrane fuel cells (PEMFC)
Cell membranes
Electroosmosis
Cathodes
Water
Membranes
Fuel cells
Anodes
Water management
Temperature
Temperature control
Drying
Current density
Gases

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology

Cite this

Huang, K. J., Hwang, S. J., & Lai, W. H. (2014). The effect of humidification and temperature difference between PEMFC membrane to water transport phenomena. In 20th World Hydrogen Energy Conference, WHEC 2014 (pp. 246-252). (20th World Hydrogen Energy Conference, WHEC 2014; Vol. 1). Committee of WHEC2014.
Huang, Kuan Jen ; Hwang, Sheng Jye ; Lai, Wei Hsiang. / The effect of humidification and temperature difference between PEMFC membrane to water transport phenomena. 20th World Hydrogen Energy Conference, WHEC 2014. Committee of WHEC2014, 2014. pp. 246-252 (20th World Hydrogen Energy Conference, WHEC 2014).
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abstract = "The operating temperature of proton exchange membrane fuel cell (PEMFC) is only at 60∼70 °C. The water and thermal management have important roles in the fuel cell. Especially the water management, it can make fuel cell operate at optimal performance, and avoid drying and flooding phenomenon. This paper discusses the effects of humidification and temperature difference of anode and cathode to the water transport phenomenon in the PEMFC. By the mixing effects of electro-osmosis and back diffusion phenomenon in the membrane, it is hard to distinguish which one determines the major water transport. This paper aims to understand the determining effect of the two phenomena in high constant current density. The results show that electro-osmosis and back diffusion are greatly influenced by temperature difference. When the temperature of cathode is higher than anode, the electro-osmosis effect is suppressed and the water transport to cathode through membrane is low. On the contrary, when the temperature of cathode is lower than anode, the electro-osmosis effect is enhanced and the water transport to cathode through membrane is high. The back diffusion has the same trend with electro-osmosis. The effect is as obvious as the increase of the temperature difference between the membrane. With this tendency, we can control the water transport direction by change the temperature of inlet gas to manage the water balance of the fuel cell without cutting off the load.",
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Huang, KJ, Hwang, SJ & Lai, WH 2014, The effect of humidification and temperature difference between PEMFC membrane to water transport phenomena. in 20th World Hydrogen Energy Conference, WHEC 2014. 20th World Hydrogen Energy Conference, WHEC 2014, vol. 1, Committee of WHEC2014, pp. 246-252, 20th World Hydrogen Energy Conference, WHEC 2014, Gwangju, Korea, Republic of, 14-06-15.

The effect of humidification and temperature difference between PEMFC membrane to water transport phenomena. / Huang, Kuan Jen; Hwang, Sheng Jye; Lai, Wei Hsiang.

20th World Hydrogen Energy Conference, WHEC 2014. Committee of WHEC2014, 2014. p. 246-252 (20th World Hydrogen Energy Conference, WHEC 2014; Vol. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - The operating temperature of proton exchange membrane fuel cell (PEMFC) is only at 60∼70 °C. The water and thermal management have important roles in the fuel cell. Especially the water management, it can make fuel cell operate at optimal performance, and avoid drying and flooding phenomenon. This paper discusses the effects of humidification and temperature difference of anode and cathode to the water transport phenomenon in the PEMFC. By the mixing effects of electro-osmosis and back diffusion phenomenon in the membrane, it is hard to distinguish which one determines the major water transport. This paper aims to understand the determining effect of the two phenomena in high constant current density. The results show that electro-osmosis and back diffusion are greatly influenced by temperature difference. When the temperature of cathode is higher than anode, the electro-osmosis effect is suppressed and the water transport to cathode through membrane is low. On the contrary, when the temperature of cathode is lower than anode, the electro-osmosis effect is enhanced and the water transport to cathode through membrane is high. The back diffusion has the same trend with electro-osmosis. The effect is as obvious as the increase of the temperature difference between the membrane. With this tendency, we can control the water transport direction by change the temperature of inlet gas to manage the water balance of the fuel cell without cutting off the load.

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Huang KJ, Hwang SJ, Lai WH. The effect of humidification and temperature difference between PEMFC membrane to water transport phenomena. In 20th World Hydrogen Energy Conference, WHEC 2014. Committee of WHEC2014. 2014. p. 246-252. (20th World Hydrogen Energy Conference, WHEC 2014).