Journal
JOURNAL OF POWER SOURCES
Volume 392, Issue -, Pages 226-231Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2018.04.110
Keywords
TiO2-B; Hierarchical structure; Exposed (010} facet; Lithium-ion battery; Electrochemical property
Funding
- National Natural Science Foundation of China [U1505241]
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Facet engineering of electrode materials with a special facet provides a new strategy to enhance their electrochemical properties. In the present work, hierarchical TiO2-B composed of nanosheets with exposed {010} facets are successfully synthesized via a facial hydrothermal route. When used as an anode for lithium ion batteries, this material demonstrates high capacities, excellent rata capability and remarkable cycling performance. For instance, it displays a reversible capacity of 200.9 mA h g(-1) after 200 cycles at a current density of 1.675 A g(-1) (5 C). Furthermore, a full cell consisted of hierarchical TiO2-B composed of nanosheets with exposed {010) facets anode and LiFePO4 cathode exhibits a high capacity of 125.6 mA h g(-1) after 1000 cycles at a current density of 2 A g(-1). Such outstanding electrochemical properties of this material can be attributed to hierarchical structure and the presence of exposed {010} facets which provides favorable lithium transport channels.
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