Study of the lithium diffusion properties and high rate performance of TiNb(6)O(17) as an anode in lithium secondary battery.
Study of the lithium diffusion properties and high rate performance of TiNb(6)O(17) as an anode in lithium secondary battery.
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DOI:
10.1038/s41598-017-16711-9
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发表时间:
2017-11-30
影响因子:
4.6
通讯作者:
Ryu KS
中科院分区:
文献类型:
--
作者:
Lee YS;Ryu KS
TiNb6O17 and TiNb2O7 were synthesized using a solid-state method. The techniques were used to assess the electrochemical performance and lithium diffusion kinetics of TiNb6O17 related to the unit cell volume with TiNb2O7. The charge-discharge curves and cyclic voltammetry revealed TiNb6O17 to have a similar redox potential to TiNb2O7 as well as a high discharge capacity. The rate performance of TiNb6O17 was measured using a rate capability test. SSCV and EIS showed that TiNb6O17 had higher lithium diffusion coefficients during the charging. From GITT, the lithium diffusion coefficients at the phase transition region showed the largest increase from TiNb2O7 to TiNb6O17.
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