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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 238 - 246 (9page)
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Electrically conductive conducting polymer nanocomposites with carbonaceous materials have attraction the attentionworldwide in resolving the energy crisis for economic reasons, ease of fabrication and easily controllable variable redoxchemical states. In this work, highly conducting polypyrrole/g-C 3 N 4 @graphene (PPy/g-C 3 N 4 @GN) has been fabricatedby polymerizing pyrrole with g-C 3 N 4 along with surfactant para toluene sulfonic acid ( p TSA) and later incorporating itwith GN by hydrothermal methodology to form a macroporous network of p TSA doped PPy/g-C 3 N 4 @GN. Thus preparedPPy/g-C 3 N 4 @GN composite was characterized for the morphological characterizations by scanning electron microscopy,transmission electron microscopy while the structural characterizations were done by X-ray powder diff raction and X-rayphotoelectron spectroscopy. The morphological analysis showed that the PPy and g-C 3 N 4 were well distributed inside theGN sheets thereby forming structures of high porosity. The PPy and g-C 3 N 4 were sandwiched between the sheets of GN andsuch morphology is expected to promote the electron transfer. The PPy/g-C 3 N 4 @GN composite showed high conductivityof 8.8 S/cm and exceptionally high thermal stability in aging thermal conductivity experiments. The high conductivity andstability is attributed to the contribution of following factors i.e. the high stability of g-C 3 N 4 , high conductivity of GN andPPy. Three electrode assembly was used to study the electrochemical supercapacitive characteristics; cyclic voltammetriccurves and galvanostatic charge discharge measurements of PPy/g-C 3 N 4 @GN. The obtained nanocomposite delivered highcapacitance of 260.4 F g −1 at a current load of 1 A g −1 as well as excellent 80% cyclic stability after the continuous 2000charge discharge cycles. The enhanced performance is due the interaction between all the constituents in the present nanocompositesand improved electrical conductivity.
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