Journal
JOURNAL OF POWER SOURCES
Volume 330, Issue -, Pages 45-54Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.08.138
Keywords
Lead lithium titanate; Anode material; Electrochemical behavior; In-situ X-ray diffraction; Lithium ion batteries
Funding
- Ningbo Key Innovation Team [2014B81005]
- Ningbo Natural Science Foundation [2016A610068]
- Opening Project of the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology) [2015-KF-12]
- K.C. Wong Magna Fund in Ningbo University
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As a novel anode material, PbLi2Ti6O14 is prepared by a traditional solid state method at a calcination temperature of 900 degrees C. Structural analysis and electrochemical tests prove that PbLi2Ti6O14 possesses a good crystallinity and superior performance. PbLi2Ti6O14, composed of particles with 400 nm in length and 300 nm in width, exhibits an initial charge capacity of 155.1 mAh g(-1) at 100 mA g(-1) and maintains at 147.9 mAh g(-1) after 100 cycles, with capacity retention as high as 95.4%. Especially, the reversible capacity of PbLi2Ti6O14 can stabilize at 101.6 mAh g(-1) after 1000 cycles at a high current density of 1000 mA g(-1), with capacity retention of 87.5%. Besides, the lithium storage behavior in PbLi2Ti6O14 is also studied by various in-situ and ex-situ methods. It is found that the lithiation/delithiation process in PbLi2Ti6O14 is a highly reversible reaction. All these results demonstrate that PbLi2Ti6O14 may be an impressive anode material in the near future. (C) 2016 Elsevier B.V. All rights reserved.
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