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Graphene-based Composites for Electrochemical Energy Storage by Jilei Liu

By Jilei Liu

This thesis makes a speciality of the synthesis and characterization of varied carbon allotropes (e.g., graphene oxide/graphene, graphene foam (GF), GF/carbon nanotube (CNT) hybrids) and their composites for electrochemical power garage purposes. The insurance levels from fabrics synthesis to electrochemical research, to state of the art electrochemical power garage units, and demonstrates how electrochemical characterization strategies could be built-in and utilized within the energetic fabrics choice and nanostructure layout procedure. Readers also will observe the most recent findings on graphene-based electrochemical strength garage units together with uneven supercapacitors, lithium ion batteries and versatile Ni/Fe batteries.
Given the original experimental techniques and strategies, the systematic electrochemical research, and the inventive versatile power garage equipment layout awarded, the thesis bargains a priceless reference consultant for researchers and novices to the sector of carbon-based electrochemical power storage.

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X. Yang, R. Piner, A. Velamakanni, I. Jung, E. K. Banerjee, L. S. Ruoff, Large-area synthesis of high-quality and uniform graphene films on copper foils. Science 324, 1312–1314 (2009) 107. S. S. Ruoff, Chemical methods for the production of graphenes. Nat. Nanotechnol. 4, 217–224 (2009) 108. Y. P. J. W. P. H. H. Z. Huang, L. J. Li, Highly efficient restoration of graphitic structure in graphene oxide using alcohol vapors. ACS Nano 4, 5285–5292 (2010) 109. Y. Hernandez, V. Nicolosi, M. M. Y. Sun, S.

2 a FTIR spectrum, b TGA plots and XPS C1 s spectra c for raw materials, parallel configuration graphene flakes and MEE graphene flakes (Fig. 2c). In which, the peaks at 286, 287 and 289 eV in XPS C1 s spectra (blue area), which are assigned to C–O, C=O and carboxyl groups, respectively, were identified. This corroborates the significant oxidization of MEE graphene [16]. 44 2 Electrochemical Exfoliation Synthesis of Graphene Fig. 3 FT-IR spectra a, TGA curves b and XPS C1 s spectra c of MEE GO prepared with different reaction time The electrolysis time is found to be important for controlling the quality of graphene, including oxidization state, thickness/lateral size distribution and production efficiency.

Z. Chen, Understanding supercapacitors based on nano-hybrid materials with interfacial conjugation. Progr. Nat. Sci. –Mater. Int. 23, 245–255 (2013) 25. P. Simon, Y. Gogotsi, Capacitive energy storage in nanostructured carbon-electrolyte systems. Acc. Chem. Res. 46, 1094–1103 (2013) 32 1 Introduction and Literature Background 26. E. Conway, 2-Dimensional and quasi-2-dimensional isotherms for Li intercalation and UPD processes at surfaces. Electrochim. Acta 38, 1249–1258 (1993) 27. E. Conway, Electrochemical surface science—the study of monolayers of ad-atoms and solvent molecules at charged metal interfaces.

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