Journal
MATERIALS RESEARCH BULLETIN
Volume 73, Issue -, Pages 125-129Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2015.08.035
Keywords
Oxides; Thin films; Nanostructures; Energy storage; Electrochemical properties
Categories
Funding
- National Natural Science Foundation of China [51502263, 51502063]
- University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province
- Postdoctoral Science Foundation of Heilongjiang Province of China [LBH-Z14120]
- China Postdoctoral Science Foundation [2015M570301]
- Natural Science Foundation [E2015064]
- Program for Innovative Research Team in University [2013TD008]
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Construction of hierarchical porous metal oxides arrays is critical for the development of high-performance electrochemical energy storage devices. Herein we report porous CoO semisphere arrays using an electrodeposited polystyrene template method. Interestingly, the as-prepared porous CoO semisphere arrays consist of bowl-like semispheres with diameters of similar to 500 nm and show highly porous structure. As a preliminary test as anode for lithium ion batteries (LIBs), the porous CoO semispheres arrays exhibit superior electrochemical performances with good cyclability (695.5 mAh g(-1), after 150 cycles at 0:5 A g(-1)) and high-rate capability. The porous semispherical architecture provides positive roles in the enhancement of electrochemical properties, including fast electronic transportation path, short diffusion of Li ion and high sufficient interfacial contact area between the active material and the electrolyte. The developed methodology enables a new fabrication of porous metal oxides with applications in electro-catalysis, optical and electrochemical devices. (C) 2015 Elsevier Ltd. All rights reserved.
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