|About this Abstract
||Materials Science & Technology 2011
||Recent Advances in Structural Characterization of Materials
||High-Energy X-Ray Tomography on 3D Microporous Composite Anode of Lithium-Ion Batteries
||XIanghui Xiao, Fikile Brushett, Susanna Neuhold, Lynn Trahey, John Vaughey
|On-Site Speaker (Planned)
Most commercially-available batteries utilize graphitic carbon anodes although this material has a relatively low energy storage capacity. Over the past decade, a number of alternative higher capacity anodes have been proposed, most are limited to short working lifetimes due to significant volume expansions and contractions during operation. To address this challenge, Trahey et al. developed a 3D microporous composite anode which showed promising initial performance compared to other alternative electrode materials. Unfortunately, the capacity of this novel anode material still fades after few tens of electrochemical cycling due to repeated shape changes and loss of electrical contact. We have applied synchrotron high-energy micro-tomography to monitor changes in anode structure in situ and in real time. This study will not only enable the optimization of the 3D microporous composite anodes but will also offer critical insights into the structure-activity relationships of high capacity porous materials within operating electrochemical energy storage devices.
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