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2014 MRS Spring Meeting


N5.02 - The Role of Contact Property of TiO2 Nanofibers on the Electrochemical Performance of Lithium Ion Battery Anode


Apr 23, 2014 2:00pm ‐ Apr 23, 2014 2:15pm

Description

TiO2 has been widely used for anode material of lithium ion battery because of its low cost and excellent structural stability during charging-discharging process. However, practical applications of TiO2 materials have been limited due to its low Li ion diffusivity and poor electrical conductivity. Several approaches such as design of 1D nanostructures, surface modification of electrode materials, and the use of hybrid electrode systems have been considered to be promising to overcome these intrinsic drawbacks of TiO2 materials, but some problems are not completely resolved. Further, it is recently reported that the contact property between electrode and current collector critically affects the electrochemical performance of lithium ion battery. Here, we suggest two different approaches to improve contact property between electrode materials and the current collector as well as between electrode materials; sol-gel nanoglues and 3D crosslinked nanoweb architecture. We could achieve excellent rate capability and stable cycle performance up to 100 cycles by applying these methodologies.

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