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Hydrothermal Synthesis of Unique Hollow Hexagonal Prismatic Pencils of Co3V2O8⋅ n H2O: A New Anode Material for Lithium-Ion Batteries.
- Source :
- Angewandte Chemie International Edition; Sep2015, Vol. 54 Issue 37, p10787-10791, 5p
- Publication Year :
- 2015
-
Abstract
- Hollow structures of transition-metal oxides, particularly mixed-metal oxides, could be promising for various applications such as lithium-ion batteries (LIBs). Compared to the synthesis of metal oxide hollow spheres by the template method, non-spherical metal oxide hollow hexagonal polyhedra have not been developed to date. Herein, we report the controlled hydrothermal synthesis of a new phase of Co<subscript>3</subscript>V<subscript>2</subscript>O<subscript>8</subscript>⋅ n H<subscript>2</subscript>O hollow hexagonal prismatic pencils (HHPPs), which is composed of uniform structural units. By varying the amount of NaOH in the presence of NH<subscript>4</subscript><superscript>+</superscript> and without any template or organic surfactant, the hexagonal prismatic pencils gradually transform from solid into hollow structures, with sizes varying from 5 to 20 μm. The structure of pencils can be preserved only in a limited range of the molar ratio of OH<superscript>−</superscript>/NH<subscript>4</subscript><superscript>+</superscript>. As a new anode material for LIBs, such hollow pencils exhibit impressive lithium storage properties with high capacity, good cycling stability, and superior rate capability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 54
- Issue :
- 37
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 109218433
- Full Text :
- https://doi.org/10.1002/anie.201503487