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Issue 48, 2017
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High rate capability performance of ordered mesoporous TiNb6O17 microsphere anodes for lithium ion batteries

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Abstract

We report the synthesis and application of ordered mesoporous TiNb6O17 microspheres (M-TNO) using a 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 a mesopore size of about 35 nm, which promotes the electron and ion migration in charge/discharge processes. M-TNO shows a high specific capacitance (307.2 mA h g−1) at a low current density of 0.2 C and a long-term cycle life over 500 cycles as an electrode. The retentive capacity of the batteries is 77% of the initial cycle after 500 cycles. It is worth noting that M-TNO exhibits excellent rate capacity, which decreases slowly from 265.7 to 172.4 mA h g−1 with the current density increasing from 1 C to 30 C. The retentive capacity at a current density of 30 C is 65% compared to that at 1 C.

Graphical abstract: High rate capability performance of ordered mesoporous TiNb6O17 microsphere anodes for lithium ion batteries

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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., 2017,46, 17061-17066
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    High rate capability performance of ordered mesoporous TiNb6O17 microsphere 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, 46, 17061
    DOI: 10.1039/C7DT03514D

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