Please use this identifier to cite or link to this item: https://doi.org/10.1021/am404853n
Title: Meso-oblate spheroids of thermal-stabile linker-free aggregates with size-tunable subunits for reversible lithium storage
Authors: Deng, D.
Lee, J.Y. 
Keywords: aggregate
anode
battery
CuO
linker-free
oblate-spheroid
Issue Date: 22-Jan-2014
Citation: Deng, D., Lee, J.Y. (2014-01-22). Meso-oblate spheroids of thermal-stabile linker-free aggregates with size-tunable subunits for reversible lithium storage. ACS Applied Materials and Interfaces 6 (2) : 1173-1179. ScholarBank@NUS Repository. https://doi.org/10.1021/am404853n
Abstract: The organization of nanoscale materials as building units into extended structures with specific geometry and functional properties is a challenging endeavor. Hereby, an environmentally benign, simple, and scalable method for preparation of stable, linker-free, self-supported, high-order 3D meso-oblate spheroids of CuO nanoparticle aggregates with size-tunable building nanounits for reversible lithium-ion storage is reported. In contrast to traditional spherical nanoparticle aggregation, a unique oblate spheroid morphology is achieved. The formation mechanism of the unusual oblate spheroid of aggregated nanoparticles is proposed. When tested for reversible lithium ion storage, the unique 3D meso-oblate spheroids of CuO nanoparticle aggregate demonstrated highly improved electrochemical performance (around ∼600 mAh/g over 20 cycles), which could be ascribed to the nanoporous aggregated mesostructure with abundant crystalline imperfection. Furthermore, the size of building units can be controlled (12 and 21 nm were tested) to further improve their electrochemical performance. © 2013 American Chemical Society.
Source Title: ACS Applied Materials and Interfaces
URI: http://scholarbank.nus.edu.sg/handle/10635/89380
ISSN: 19448244
DOI: 10.1021/am404853n
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