scholarly journals Observation of Three-Phase Interface during Hydrogen Electrode Reactions in Unitized Regenerative Fuel Cell

2014 ◽  
Vol 161 (10) ◽  
pp. F1002-F1005 ◽  
Author(s):  
Wataru Majima ◽  
Hisayoshi Matsushima ◽  
Yasuhiro Fukunaka ◽  
Mikito Ueda
Keyword(s):  
Fuel Cell ◽  
Phase Interface ◽  
Hydrogen Electrode ◽  
Electrode Reactions ◽  
Three Phase ◽  
Regenerative Fuel Cell

Three-phase interfacial phenomena in alkaline unitized regenerative fuel cell

2013 ◽  
Vol 114 ◽  
pp. 509-513 ◽  
Author(s):  
Hisayoshi Matsushima ◽  
Wataru Majima ◽  
Yasuhiro Fukunaka
Keyword(s):  
Fuel Cell ◽  
Interfacial Phenomena ◽  
Three Phase ◽  
Regenerative Fuel Cell

Enhancement of interfacial property by novel solid ionomer CsHSO4-H4SiW12O40 for the three-phase interface of a medium-temperature anhydrous fuel cell

2019 ◽  
Vol 253 ◽  
pp. 201-204 ◽  
Author(s):  
Keiichiro Maegawa ◽  
Kyaw Zay Ya ◽  
Wai Kian Tan ◽  
Go Kawamura ◽  
Toshiaki Hattori ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Phase Interface ◽  
Interfacial Property ◽  
Medium Temperature ◽  
Three Phase

Design and Testing of a Unitized Regenerative Fuel Cell

2009 ◽  
Vol 6 (3) ◽  
Author(s):  
Jeremy Fall ◽  
Drew Humphreys ◽  
S. M. Guo
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Platinum Catalyst ◽  
Oxygen Electrode ◽  
Gas Diffusion ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Hydrogen Electrode ◽  
Iridium Catalysts ◽  
Regenerative Fuel Cell

A unitized regenerative fuel cell (URFC) is designed and tested for energy conversion and storage under the support of a NASA funded student design project. The URFC is of the proton exchange membrane type with an active cell area of 25cm2. In the URFC design, liquid water is stored internally to the fuel cell within graphite bipolar plates while hydrogen and oxygen gases, electrolyzed from water, are stored in containers external to the fuel cell. A spraying technique is used to produce a functional membrane electrode assembly. Catalyst ink is prepared using E-TEK Inc. platinum and iridium catalysts loaded on Vulcan XC-72. Platinum catalyst is used for the hydrogen electrode. 50wt% platinum∕50wt% iridium catalyst is used for the oxygen electrode. The metal weight on carbon is 30% for both the platinum and iridium catalysts. Water management within the fuel cell is handled by treatment of the gas diffusion layer with a Teflon emulsion to create the proper balance of hydrophobic and hydrophilic pores. The single cell unit is tested in either fuel cell mode or electrolysis mode for different catalyst loadings. Polarization curves for the URFC are generated to evaluate system performance.

A framework ensemble facilitates high Pt utilization in a low Pt loading fuel cell

2021 ◽  
Vol 11 (8) ◽  
pp. 2957-2963
Author(s):  
Jian Wang ◽  
Guangping Wu ◽  
Wenhui Xuan ◽  
Lishan Peng ◽  
Yong Feng ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Phase Field ◽  
Active Sites ◽  
Catalyst Layer ◽  
Three Phase ◽  
Pt Utilization ◽  
The Cross ◽  
Low Pt Loading ◽  
Effective Transfer

Rationally designing the structure of catalyst layer in MEA to achieve the dispersion of active sites at the cross of three-phase field and the effective transfer network paths for protons through catalysts and catalyst layer.

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