Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/137193
Title: SYNTHESIS AND CHARACTERIZATION OF TRANSITION METAL OXIDE/SULFIDE NANOSTRUCTURES FOR ELECTROCHEMICAL APPLICATIONS
Authors: GAMZE YILMAZ
Keywords: supercapacitors, electrocatalyts, metal oxide, metal sulfide, nanostructure, electrochemical
Issue Date: 25-May-2017
Source: GAMZE YILMAZ (2017-05-25). SYNTHESIS AND CHARACTERIZATION OF TRANSITION METAL OXIDE/SULFIDE NANOSTRUCTURES FOR ELECTROCHEMICAL APPLICATIONS. ScholarBank@NUS Repository.
Abstract: This thesis is essentially oriented to develop low-cost nanostructured transition metal (nickel and vanadium) oxides and sulfides with high energy density, power density and electrochemical stability via strategies of structural design, hybridization, functionalization and surface engineering. Metal oxide and metal oxide/sulfide hybrid nanostructures in several designs, including hierarchical porous nanostructures, hollow polyhedrons, nanocubes, nanoframes, octopod nanoframes, and nanocages, were synthesized to study the contribution of structural design, compositional engineering, functionalization and surface engineering to the electrochemical properties of the materials. Modulated compositional and structural features disclosed the opportunities of large accessible active sites, facile ion transport, robustness and enhanced electrical conductivity. The best electrochemical performance with merits of highest energy density (38.9 Wh kg-1), power density (7.4 kW kg-1) and electrochemical stability (90.9% after 10000 cycles) was obtained for nickel cobalt layered double hydroxide/cobalt sulfide (NiCo-LDH/Co9S8) hybrid hollow polyhedron structure.
URI: http://scholarbank.nus.edu.sg/handle/10635/137193
Appears in Collections:Ph.D Theses (Open)

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