Journal
JOURNAL OF APPLIED ELECTROCHEMISTRY
Volume 41, Issue 7, Pages 803-808Publisher
SPRINGER
DOI: 10.1007/s10800-011-0299-7
Keywords
Lithium-ion batteries; Anode materials; Lithium vanadium oxide; Crystal structure; Electronic structure; Electrochemical properties
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Funding
- Ministry of Knowledge Economy
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea Evaluation Institute of Industrial Technology (KEIT) [2008EEL11P070000] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [과06B1512] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Li1+xV1-xO2 (0 <= x <= 0.1) compounds were studied as the anode materials for a lithium-ion battery. The crystal and electronic structures of the prepared materials were correlated with electrical conductivities and electrochemical properties. The electrochemical behaviors were significantly dependent on the composition of Li1+xV1-xO2 , and these were resulted from the perturbation of the local electronic structure arising from the increase in lithium contents in Li1+xV1-xO2 rather than from the slight distortion in the crystal structure. The electrical conductivities of Li1+xV1-xO2 increased with the increase in lithium contents in the compounds. Li1.1V0.9O2 and Li1.075V0.925O2 samples exhibit the first discharge capacities of 250 and 241 mAh g(-1) at 0.2 C-rate, respectively.
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