Journal
JOURNAL OF MATERIALS SCIENCE
Volume 54, Issue 24, Pages 14825-14833Publisher
SPRINGER
DOI: 10.1007/s10853-019-03939-1
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Funding
- National Natural Science Foundation of China [21771164, 21501101]
- Natural Science Foundation of Henan Department of Education [16B150012]
- Technological Project of Henan Province [172102210423]
- Special Foundation of the Nanyang Normal University [70356]
- Henan Province [15HASTIT003]
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As one kind of promising anode materials for Li-ion batteries, titanium niobium oxides have attracted great attention due to their high theoretical capacities and high rate performances. Herein, TiNb6O17/C composite with TiNb6O17 nanocrystals distributed among amorphous carbon has been synthesized via an in situ sol-gel and then thermal decomposition process. The as-synthesized TiNb6O17/C composite presents reduced crystal size and improved electronic conductivity compared with the pristine TiNb6O17. The TiNb6O17/C displays both excellent rate performance (high specific capacity of 129 mA h g(-1) at 30 C) and good cyclic performance (low capacity decay rate of 0.016% per cycle for 500 cycles at 10 C). These results indicate that the approach as reported is a simple yet effective way for high-performance anode with high-rate capability.
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