2011 Fiscal Year Final Research Report
Development of Nanoprotonics Materials Based on Three Dimensional Hydrogen Bonding Networks
| Project/Area Number |
21655075
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
MATSUDA Atsunori 豊橋技術科学大学, 大学院・工学研究科, 教授 (70295723)
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| Co-Investigator(Kenkyū-buntansha) |
MUTO Hiroyuki 豊橋技術科学大学, 大学院・工学研究科, 准教授 (20293756)
DAIKO Yusuke 兵庫県立大学, 大学院・工学研究科, 助教 (70514404)
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| Co-Investigator(Renkei-kenkyūsha) |
KOGURE Toshihiro 東京大学, 大学院・理学系研究科, 准教授 (50282728)
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| Project Period (FY) |
2009 – 2011
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| Keywords | メカノケミカル / プロトン / 固体酸 / 電解質 / 燃料電池 / 無機-有機 / 複合体 |
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| Research Abstract |
Several kinds of hydrogen sulfate MHSO_4(M=Cs, K, Na, NH_4) and WPA were mechanochemically milled to synthesize highly proton conducting xMHSO_4・(100-x) WPA(mol%) composites. Except NaHSO_4-WPA composites, xMHSO_4・(100-x) WPA(M=Cs, K, NH_4) with x=90-95 composites showed high proton conductivities in a wide temperature range under dry conditions. Chemical interactions via ion-exchange and hydrogen bond between XHSO_4 and WPA were confirmed from structural studies. Furthermore, the anhydrous proton conductivity of the MHSO_4-WPA composites was well correlated with their estimated hydrogen bonding distance, indicating that reduction of the hydrogen bonding distance in the MHSO_4-WPA composites is significant in the proton hopping to achieve anhydrous high proton conductivity. Inorganic-organic composite electrolytes were fabricated from CsHSO_4-WSiA and polybenzimidazole(PBI) for application in medium temperature fuel cells. The mechanochemically synthesized Cs-WSiA composites are a promising material to achieve high electrochemical properties in the intermediate fuel cells.
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