Mechanical Performance and Electrochemical Properties of Clathrate Hydrate Reinforced by Clay Particles

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Clathrate hydrates have increasingly attracted attention as a potential proton conductor because of their relatively high proton conductivity, even at low temperature. For application to various electrochemical energy devices, however, their relatively poor mechanical properties, stemming from the hydrogen bonded frameworks, will have to be improved. At the same time, any accompanying structural transformation that would cause a loss of inherent structural characteristics must be avoided. In the present work, we prepared a clathrate Me(4)NOH center dot 5H(2)O nano composite incorporating clay particles to improve its mechanical properties. It was found that clay loading induced an increase in compressive strength from 7.95 MPa for pristine clathrate to 18.25 MPa for 2 wt % clay nanocomposite. This improvement could be attributed to good compatibility between the clathrate hydrate matrix and clay particles and dispersion of the clay into the matrix on a nanometer scale. In addition, we checked the proton conductivity and potential window of the nanocomposite to confirm that they are sufficient for real applications, even at low temperature.
Publisher
AMER CHEMICAL SOC
Issue Date
2011-08
Language
English
Article Type
Article
Keywords

TETRAMETHYLAMMONIUM HYDROXIDE PENTAHYDRATE; SILICATE NANOCOMPOSITES; POLYMER NANOCOMPOSITES; CONDUCTIVITY; ICE; (CH3)4NOH.5H2O; HYBRID

Citation

JOURNAL OF PHYSICAL CHEMISTRY C, v.115, no.31, pp.15655 - 15660

ISSN
1932-7447
URI
http://hdl.handle.net/10203/95657
Appears in Collection
CBE-Journal Papers(저널논문)
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