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Title: Fabrication of nickel oxide carbon nanocomposites for supercapacitor applications
Researcher: Anjali Paravannoor
Guide(s): Avinash Balakrishnan , Shantikumar V Nair
Keywords: Physical Sciences,Multidisciplinary,Nanoscience and Nanotechnology
University: Amrita Vishwa Vidyapeetham (University)
Completed Date: 02/11/2015
Abstract: The global shift of energy production from fossil fuels to renewable energy sources requires more efficient and reliable electrochemical energy storage devices. In particular, the development of electric or hydrogen powered vehicles calls for muchhigher- performance batteries, supercapacitors and fuel cells than are currently available. As far as supercapacitors are concerned, due to their low cost, easy availability, large active area and good electric conductivity, carbon based materials currently dominate the market as core electrode materials. However, the exploitation of pseudocapactive/faradaic effects to enhance doublelayer capacitance seems to be an alternative means to develop the next generation of high-power and high-energy electrochemical capacitors. However, pseudocapacitors frequently suffer a number of adverse shortcomings including charge storage instability, an increased resistance and short life cycle. In this thesis, above challenges have been explored through the investigation of NiO nanostructures as a promising electrode material in combination with nano-carbon sourced from a relatively cheaper source-camphor. The formulation of new electrolyte systems like ionic liquid was also been tried to improve the operating voltage window of the system which in turn could improve the energy density as well as power density values. In the first part of this thesis, NiO nanoparticles were synthesized as a control system through a molten salt technique. A detailed study has been performed to elucidate the effect of intra- and inter-particle by inclusion of ceria (1 5 wt %) as well as addition of carbon in these nanoparticles and its impact on the electrochemical performance. From the analysis of the relevant parameters, an intrinsic correlation between the effect of ceria, conductance and the internal resistance has been deduced and explained on the basis of cerium as a dopant and ceria as an additive which could reduce the rate of oxygen evolution. ..
Pagination: XVII, 94
Appears in Departments:Amrita Centre for Nanosciences and Molecular Medicine

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02_declaration.pdf4.55 kBAdobe PDFView/Open
03_certificate.pdf37.99 kBAdobe PDFView/Open
04_contents.pdf11.11 kBAdobe PDFView/Open
05_acknowledgement.pdf113.8 kBAdobe PDFView/Open
06_abstract.pdf118.67 kBAdobe PDFView/Open
07_abbreviation.pdf113.54 kBAdobe PDFView/Open
08_list of figures.pdf16.59 kBAdobe PDFView/Open
09_list of tables.pdf5.64 kBAdobe PDFView/Open
10_chapter 1.pdf301.69 kBAdobe PDFView/Open
11_chapter 2.pdf1.1 MBAdobe PDFView/Open
12_chapter 3.pdf518.01 kBAdobe PDFView/Open
13_chapter 4.pdf1.06 MBAdobe PDFView/Open
14_chapter 5.pdf603.09 kBAdobe PDFView/Open
15_references.pdf291.17 kBAdobe PDFView/Open
16_publications.pdf122.25 kBAdobe PDFView/Open

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