期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 27, 页码 10599-10606出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta01438c
关键词
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资金
- Chinese Project Academy of Science [XDA01020304]
- National Natural Science Foundation of China [51371186]
- Ningbo 3315 International Team of Advanced Energy Storage Materials
- Zhejiang Province Key Science and Technology Innovation Team
- China Postdoctoral Science Foundation [2013M541807]
- Zhejiang Province Preferential Postdoctoral Funded Project [BSH1302055]
We have reported a facile method to fabricate hierarchical boron-doped rutile submicrosphere TiO2 (SMT), whose primary particles are similar to 20 nm in diameter. The as-synthesized boron-doped SMT shows excellent cycling performance and rate capability in comparison with undoped TiO2 as an anode material in Lithium-Ion Batteries (LIBs). It has a very stable capacity of similar to 190 mA h g(-1) for 500 cycles at 1C. In addition, the density functional theory (DFT) calculations are carried out to indicate that a low concentration (<1.0 at%) of boron doping could enhance the carrier mobility mu and electrical conductivity sigma, and thus reveal the relationship between the electronic structure of boron-doped SMT and the performances of the boron-doped SMT anode in LIBs. Our results also clearly demonstrate the importance and advantage of the hierarchical submicrometer-sized spherical morphology of the TiO2 anode in LIBs.
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