Application of a composite electrolyte in a solid-acid fuel cell system: A micro-arc oxidation alumina support filled with CsH2PO4
| Autor: | Xinghua Guo, Yuxi Huang, Hao Ge, Keqin Du, Fuhui Wang, Quanzhong Guo, Yong Wang |
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| Rok vydání: | 2013 |
| Předmět: |
Chemical resistance
Materials science Renewable Energy Sustainability and the Environment Metallurgy Alloy Energy Engineering and Power Technology Conductivity engineering.material Condensed Matter Physics Microstructure Anode Fuel Technology Membrane Chemical engineering Phase (matter) engineering Proton conductor |
| Zdroj: | International Journal of Hydrogen Energy. 38:16387-16393 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2013.09.127 |
| Popis: | A micro-arc oxidation alumina (MOA) support filled with a CsH2PO4 proton conductor was investigated as an inorganic composite electrolyte for a H2/O2 solid-acid fuel cell (SAFC). The MOA support was polycrystalline and contained α- and γ-Al2O3 phases; while, the proton conductor CsH2PO4 formed an interlaced network within the MOA support. The single-module SAFC using the fabricated MOA/CsH2PO4 membrane delivered a peak power of ∼38.5 m W cm−2 and a proton conductivity of ∼2.1 m S cm−1 at a low temperature (25 °C). Compared to a SAFC using an anodic alumina membrane composite electrolyte (AAM/CsH2PO4 SAFC), which displayed rapid degradation, the SAFC using the MOA/CsH2PO4 composite electrolyte showed improved stability with cycling. This was attributed to the crystalline α-Al2O3 phase that was part of the MOA support that had increased the chemical resistance. |
| Databáze: | OpenAIRE |
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