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Author Dall'Asta, V. ♦ Tealdi, C. ♦ Resmini, A. ♦ Anselmi Tamburini, U. ♦ Mustarelli, P. ♦ Quartarone, E.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ NANOSCIENCE AND NANOTECHNOLOGY ♦ ANODES ♦ CAPACITORS ♦ CAPACITY ♦ ELECTROCHEMISTRY ♦ LITHIUM ♦ NANOCOMPOSITES ♦ NANOSTRUCTURES ♦ PERFORMANCE ♦ SHEETS ♦ SPECIFIC SURFACE AREA ♦ ZINC OXIDES
Abstract Zinc oxide nanoarchitectures may be employed as binder-free, high specific capacity anodes for lithium batteries. By means of simple and low-impact wet chemistry approaches, we synthesized 1D (nanorods), 2D (single- and multi-layered nanosheets), and 3D (nanobrushes) ZnO arrays. These nanoarchitectures were compared as far as concerns their electrochemical properties and the structural modifications upon lithiation/delithiation. The best results were offered by 2D nanosheets, which showed reversible capacity of the order of 400 mAhg{sup −1} after 100 cycles at 1 Ag{sup −1}. This was due to: i) small nanoparticles, with average diameter of about 10 nm, which maximize the array specific surface area and favor the formation of the LiZn alloy; ii) the presence of a mesoporous texture, which allows larger space for accommodating the volume changes upon lithiation/delithiation. However, also these 2D structures showed large irreversible capacity losses. Our work highlights the need for more efficient buffering solutions in ZnO binder-free nanostructured anodes. - Graphical abstract: ZnO nanosheets as anode materials for lithium batteries.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2017-03-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 247


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