Dresden 2014 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 12: Energy materials: Water splitting, batteries, and supercapacitors (with CPP/MM)

HL 12.3: Vortrag

Montag, 31. März 2014, 11:15–11:30, POT 081

Three-dimensional Composite Aerogels and Other Nanostructures for Improved Electrochemical Property — •Liying Liang1,2, Yimeng Xu1, Haimei Liu1, and Yong Lei21Beijing University of Chemical Technology, State Key Laboratory of Chemical Resource Engineering, 100029 Beijing (PR China) — 2Ilmenau University of Technology, Institute of Physics & IMN MacroNano (ZIK) Prof. Schmidt-Str. 26, 98693 Ilmenau (Germany)

Three-dimensional (3D) graphene aerogels possess a lot of unique properties, such as light weight, high conductivity, large surface area, high mechanical strength, and ample volume with hierarchically porous structure, which make them widely applied in various technological fields. Here, 3D porous composite aerogels have been synthesized via an innovative in situ hydrothermal method assisted by freeze-drying process. In this hybrid structure, one-dimensional (1D) AgVO3 nanowires are uniformly dispersed on two-dimensional (2D) graphene nanosheets surfaces or penetrate through the graphene sheets, forming 3D porous composite aerogels. The composite aerogels as cathode materials for lithium-ion batteries, exhibit high discharge capacity, excellent rate capability, and good cycling stability. We are also preparing more novel nanostructures by using AAO templates, which are expected to provide excellent electrochemical performance.

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