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High rate capability performance of ordered mesoporous TiNb6O17 microspheres anodes for lithium ion batteries

Abstract

We report synthesis and application of ordered mesoporous TiNb6O17 microspheres (M-TNO) using one-step solvothermal method for the first time in lithium-ion batteries. The diameters of TiNb6O17 microspheres are in the range from 2.2 to 2.4 μm with the mesoporous sizes of about 35 nm, which promotes the electron and ion migration in charge/discharge processes. M-TNO shows a high specific capacitance (307.2 mAh g-1) at a low current density of 0.2 C and a long-term cycle life over 500 cycles as electrodes. The retentive capacity of the batteries is 77% for initial cycle after 500 cycles. It worth noting that M-TNO exhibits excellent rate capacity, which decrease slowly from 265.7 to 172.4 mAh g-1 with current density increasing from 1 C to 30 C. The retentive capacity of at current density of 30 C is 65% compared to that of 1 C.

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Publication details

The article was received on 20 Sep 2017, accepted on 05 Nov 2017 and first published on 14 Nov 2017


Article type: Paper
DOI: 10.1039/C7DT03514D
Citation: Dalton Trans., 2017, Accepted Manuscript
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    High rate capability performance of ordered mesoporous TiNb6O17 microspheres anodes for lithium ion batteries

    R. Sun, G. Liu, S. Cao, B. Dong, X. Liu, M. Hu, M. Liu and X. Duan, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT03514D

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