期刊
JOURNAL OF POWER SOURCES
卷 187, 期 1, 页码 224-228出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2008.10.109
关键词
LiV3O8; Cathode materials; Boron doping; Lithium-ion battery
资金
- National Science Fund for Outstanding Young Scientists of China [50625207]
- National Post Doctoral Fund of China
Boron was doped into lithium trivanadate through an aqueous reaction process followed by heating at 100 degrees C. The B-LiV3O8 materials as a cathode in lithium batteries exhibits a specific discharge capacity of 269.4 mAh g(-1) at first cycle and remains 232.5 mAh g(-1) at cycle 100, at a current density of 150 mAh g-1 in the voltage range of 1.8-4.0 V. The B-LiV3O8 materials show excellent stability, with the retention of 86.30% after 100 cycles. These result values are higher than those previous reports indicating B-LiV3O8 prepared by our synthesis met hod is a promising candidate as cathode material for rechargeable lithium batteries. The enhanced discharge capacities and their stabilities indicate that boron atoms promote lithium transferring and intercalating/deintercalaling during the electrochemical processes and improve the electrochemical performance of LiV3O8 cathode. (C) 2008 Elsevier B.V. All rights reserved.
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