Journal
ADVANCED ENERGY MATERIALS
Volume 5, Issue 7, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201401756
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Funding
- NSFC [21271190, U1301242]
- Research Fund for the Doctoral Program of Higher Education of China (RFDP) [20130171130001]
- Government of Guangdong Province for NSF [S2012020011113]
- Government of Guangdong Province for industry [2012B09000026]
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University [2012-01]
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A new form of TiO2 microspheres comprised of anatase/TiO2-B ultrathin composite nanosheets has been synthesized successfully and used as Li-ion storage electrode material. By comparison between samples obtained with different annealing temperatures, it is demonstrated that the anatase/TiO2-B coherent interfaces may contribute additional lithium storage venues due to a favorable charge separation at the boundary between the two phases. The as-prepared hierarchical nanostructures show capacities of 180 and 110 mAh g(-1) after 1000 cycles at current densities of 3400 and 8500 mA g(-1). The ultrathin nanosheet structure which provides short lithium diffusion length and high electrode/electrolyte contact area also accounts for the high capacity and long-cycle stability.
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