Design and Synthesis of Three - Dimensional Mesoporous Graphene / MnO2 Composites and Their Capacitance Performances View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2013-2016

FUNDING AMOUNT

270000 CNY

ABSTRACT

3D porous graphene, which is fabricated with the 2D graphene sheets, is an ideal electrode materials for supercapacitors. It provides facile routes for electron and electrolyte transportations in interconnected conductive networks. In this project, 3D mesoporous graphene will be fabricated by using NH2-SiO2 nanosphere as a sacrificial template. The overall synthetic procedure of 3D mesoporous graphene involves three steps: the graphene-encapsulated NH2-SiO2 is firstly fabricated by coassembly between negatively charged graphene oxide and positively charged NH2-SiO2 nanoparticles. Then,the resulting aggregates is thermally reduced to result in graphene encapsulated SiO2. Finally, SiO2 is etched away by NaOH to get the mesoporous graphene. Furthermore, for further capacitance boost, a thin layer of MnO2 is additionally deposited onto the graphene to get the 3D mesoporous graphene/MnO2 composite.The mesoporous graphene/MnO2 has excellent mechanical properties,larger accessible surface area and suitable pore structure to increase the capacitance perfomance of the electrode material,compared to the corresponding macroporous material.In order to design and control the structure and property of the 3D mesoporous graphene/MnO2 composition, the structure-activity relationships of the electrode material will be explored More... »

URL

http://npd.nsfc.gov.cn/projectDetail.action?pid=21301159

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