TiO2-B fibres derived from K2Ti4O9 as fast lithium intercalation negative material

Wei Zhuang; Linghong Lü; Xinbing Wu; Meng Meng; Yudan Zhu; Xiaohua Lu

doi:10.3969/j.issn.0438-1157.2013.01.044

TiO₂-B fibres derived from K₂Ti₄O₉ as fast lithium intercalation negative material

Wei Zhuang, Linghong Lü, Xinbing Wu, Meng Meng, Yudan Zhu, Xiaohua Lu

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

TiO₂-B fibers were obtained by heat treatment of the precursor of tetratitanate(H₂Ti₄O₉· xH₂O), which was derived from potassium tetratitanate(K₂Ti₄O₉)via ion exchange. Structure characterization showed that TiO₂-B fibers sintered at 600°C still maintained pure phase and high crystallinity. Lithium insertion performance indicated that the capacity performance of this TiO₂-B material sintered at 600°C was up to 225 mA·h·g^-1, and was 50 mA·h·g^-1(i. e. 22.5%)higher than that of the anatase material with similar structure. The TiO₂-B fibers exhibited excellent rate performance mainly because the open structure of the TiO₂-B fibers led to fast lithium-ion diffusion coefficient of 1.92×10^-7 cm²·s^-1, which was nearly 8 times higher than that of anatase material. 1 C stability test showed that the capacity of TiO₂-B fiber was 159 mA·h·g^-1 after 80 cycles, which was about 1.5 times higher than the capacity of anatase material(64 mA·h·g^-1).

Original language	English
Pages (from-to)	374-380
Number of pages	7
Journal	Huagong Xuebao/CIESC Journal
Volume	64
Issue number	1
DOIs	https://doi.org/10.3969/j.issn.0438-1157.2013.01.044
State	Published - Jan 2013

Keywords

Lithium ion batteries
Negative materials
Potassium tetratitanate
TiO-B fibres

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.3969/j.issn.0438-1157.2013.01.044

Cite this

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title = "TiO2-B fibres derived from K2Ti4O9 as fast lithium intercalation negative material",

abstract = "TiO2-B fibers were obtained by heat treatment of the precursor of tetratitanate(H2Ti4O9· xH2O), which was derived from potassium tetratitanate(K2Ti4O9)via ion exchange. Structure characterization showed that TiO2-B fibers sintered at 600°C still maintained pure phase and high crystallinity. Lithium insertion performance indicated that the capacity performance of this TiO2-B material sintered at 600°C was up to 225 mA·h·g-1, and was 50 mA·h·g-1(i. e. 22.5%)higher than that of the anatase material with similar structure. The TiO2-B fibers exhibited excellent rate performance mainly because the open structure of the TiO2-B fibers led to fast lithium-ion diffusion coefficient of 1.92×10-7 cm2·s-1, which was nearly 8 times higher than that of anatase material. 1 C stability test showed that the capacity of TiO2-B fiber was 159 mA·h·g-1 after 80 cycles, which was about 1.5 times higher than the capacity of anatase material(64 mA·h·g-1).",

keywords = "Lithium ion batteries, Negative materials, Potassium tetratitanate, TiO-B fibres",

author = "Wei Zhuang and Linghong L{\"u} and Xinbing Wu and Meng Meng and Yudan Zhu and Xiaohua Lu",

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T1 - TiO2-B fibres derived from K2Ti4O9 as fast lithium intercalation negative material

AU - Zhuang, Wei

AU - Lü, Linghong

AU - Wu, Xinbing

AU - Meng, Meng

AU - Zhu, Yudan

AU - Lu, Xiaohua

PY - 2013/1

Y1 - 2013/1

N2 - TiO2-B fibers were obtained by heat treatment of the precursor of tetratitanate(H2Ti4O9· xH2O), which was derived from potassium tetratitanate(K2Ti4O9)via ion exchange. Structure characterization showed that TiO2-B fibers sintered at 600°C still maintained pure phase and high crystallinity. Lithium insertion performance indicated that the capacity performance of this TiO2-B material sintered at 600°C was up to 225 mA·h·g-1, and was 50 mA·h·g-1(i. e. 22.5%)higher than that of the anatase material with similar structure. The TiO2-B fibers exhibited excellent rate performance mainly because the open structure of the TiO2-B fibers led to fast lithium-ion diffusion coefficient of 1.92×10-7 cm2·s-1, which was nearly 8 times higher than that of anatase material. 1 C stability test showed that the capacity of TiO2-B fiber was 159 mA·h·g-1 after 80 cycles, which was about 1.5 times higher than the capacity of anatase material(64 mA·h·g-1).

AB - TiO2-B fibers were obtained by heat treatment of the precursor of tetratitanate(H2Ti4O9· xH2O), which was derived from potassium tetratitanate(K2Ti4O9)via ion exchange. Structure characterization showed that TiO2-B fibers sintered at 600°C still maintained pure phase and high crystallinity. Lithium insertion performance indicated that the capacity performance of this TiO2-B material sintered at 600°C was up to 225 mA·h·g-1, and was 50 mA·h·g-1(i. e. 22.5%)higher than that of the anatase material with similar structure. The TiO2-B fibers exhibited excellent rate performance mainly because the open structure of the TiO2-B fibers led to fast lithium-ion diffusion coefficient of 1.92×10-7 cm2·s-1, which was nearly 8 times higher than that of anatase material. 1 C stability test showed that the capacity of TiO2-B fiber was 159 mA·h·g-1 after 80 cycles, which was about 1.5 times higher than the capacity of anatase material(64 mA·h·g-1).

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KW - Negative materials

KW - Potassium tetratitanate

KW - TiO-B fibres

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