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|Title:||CARBON AND METAL OXIDES BASED NANOMATERIALS FOR FLEXIBLE HIGH PERFORMANCE ASYMMETRIC SUPERCAPACITORS||Authors:||HU YATING||Keywords:||flexible, high performance, asymmetric supercapacitors||Issue Date:||5-Jan-2017||Citation:||HU YATING (2017-01-05). CARBON AND METAL OXIDES BASED NANOMATERIALS FOR FLEXIBLE HIGH PERFORMANCE ASYMMETRIC SUPERCAPACITORS. ScholarBank@NUS Repository.||Abstract:||Supercapacitors is a promising high efficiency energy storage device for resolving the energy crisis. However, technical issues, such as the low energy density, need to be overcame before supercapacitors could be largely commercialized. In addition, currently available candidates for the electrode materials all have their disadvantages, such as, the low capacitance for carbon-based materials and poor conductivity for transition metal oxide/hydroxide-based materials. In this thesis, these issues that supercapacitors facing are addressed. Electrode materials such as the mesoporous carbon materials, manganese oxides, iron oxides and their hybrids with graphene have been examined. Through novel structural design and optimizations, the electrochemical performances for these materials are highly improved. A flexible high performance asymmetric supercapacitor with manganese oxides/reduced graphene oxide as positive electrode and iron oxide/reduced graphene oxide as anode is devised with a high energy density of 0.056 Wh cm-3 the corresponding power density of 0.32 W cm-3.||URI:||http://scholarbank.nus.edu.sg/handle/10635/135277|
|Appears in Collections:||Ph.D Theses (Open)|
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