Impedance spectroscopy of a single-walled carbon nanotubes/TlH_2PO_4 ferroelectrics composite system
Impedance spectroscopy of a single-walled carbon nanotubes/TlH_2PO_4 ferroelectrics composite system
- 주제(키워드) Electrical transport properties , Single-walled carbon nanotubes , Solid acids , Metal-based composites
- 발행기관 한국물리학회
- 발행년도 2011
- 총서유형 Journal
- UCI G704-001115.2011.11.3.021
- KCI ID ART001553456
- 본문언어 영어
초록/요약
The electrical properties of single-walled carbon nanotubes (SWNTs)/TlH_2PO_4 composites have been studied, a metallic transition being observed around a SWNTs concentration of 0.2 wt.% and investigated by means of impedance spectroscopy. This work represents the first study of its kind to show that nanoparticles may be employed as valued additives that are compatible with the solid acids, providing for increased electrical conductivity of fuel-cell electrolytes. A two orders of magnitude increase in the surface capacitance was observed in the composite, opening up a possibility of new solid acid electrolytes for fuel cells and composite electrolytes serving as a supercapacitor by itself.
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