Structure and electrochemical properties of Zn-doped Li4 Ti 5O12 as anode materials in li-ion battery

Biao Zhang; Hongda Du; Baohua Li; Feiyu Kang

doi:10.1149/1.3294846

Structure and electrochemical properties of Zn-doped Li₄ Ti ₅O₁₂ as anode materials in li-ion battery

Biao Zhang, Hongda Du, Baohua Li, Feiyu Kang

Research output: Journal article publication › Journal article › Academic research › peer-review

67 Citations (Scopus)

Abstract

Zinc-doped lithium titanates with the formula of Li4-xZn xTi5O12 (x=0, 0.25, 0.5, 1) were synthesized as anode materials via a solid-state reaction. The phase composition does not change by Zn doping when x<1 but results in the increase in the relative peak intensity ratio of I(311)/I(111) and I (400)/I(111) in X-ray diffraction. The conductivity is improved by Zn doping via the generation of mixing Ti4+/Ti 3+. The specific capacity at 0.5C decreases by Zn doping, which is ascribed to the location of Zn2+ at the 8a site; however, the capacity retention is improved remarkably compared to that of the undoped one when discharged at a high rate.

Original language	English
Journal	Electrochemical and Solid-State Letters
Volume	13
Issue number	4
DOIs	https://doi.org/10.1149/1.3294846
Publication status	Published - 22 Feb 2010
Externally published	Yes

ASJC Scopus subject areas

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrical and Electronic Engineering
Electrochemistry

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abstract = "Zinc-doped lithium titanates with the formula of Li4-xZn xTi5O12 (x=0, 0.25, 0.5, 1) were synthesized as anode materials via a solid-state reaction. The phase composition does not change by Zn doping when x<1 but results in the increase in the relative peak intensity ratio of I(311)/I(111) and I (400)/I(111) in X-ray diffraction. The conductivity is improved by Zn doping via the generation of mixing Ti4+/Ti 3+. The specific capacity at 0.5C decreases by Zn doping, which is ascribed to the location of Zn2+ at the 8a site; however, the capacity retention is improved remarkably compared to that of the undoped one when discharged at a high rate.",

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AU - Zhang, Biao

AU - Du, Hongda

AU - Li, Baohua

AU - Kang, Feiyu

PY - 2010/2/22

Y1 - 2010/2/22

N2 - Zinc-doped lithium titanates with the formula of Li4-xZn xTi5O12 (x=0, 0.25, 0.5, 1) were synthesized as anode materials via a solid-state reaction. The phase composition does not change by Zn doping when x<1 but results in the increase in the relative peak intensity ratio of I(311)/I(111) and I (400)/I(111) in X-ray diffraction. The conductivity is improved by Zn doping via the generation of mixing Ti4+/Ti 3+. The specific capacity at 0.5C decreases by Zn doping, which is ascribed to the location of Zn2+ at the 8a site; however, the capacity retention is improved remarkably compared to that of the undoped one when discharged at a high rate.

AB - Zinc-doped lithium titanates with the formula of Li4-xZn xTi5O12 (x=0, 0.25, 0.5, 1) were synthesized as anode materials via a solid-state reaction. The phase composition does not change by Zn doping when x<1 but results in the increase in the relative peak intensity ratio of I(311)/I(111) and I (400)/I(111) in X-ray diffraction. The conductivity is improved by Zn doping via the generation of mixing Ti4+/Ti 3+. The specific capacity at 0.5C decreases by Zn doping, which is ascribed to the location of Zn2+ at the 8a site; however, the capacity retention is improved remarkably compared to that of the undoped one when discharged at a high rate.

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Structure and electrochemical properties of Zn-doped Li₄ Ti ₅O₁₂ as anode materials in li-ion battery

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