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Journal of Materials Science: Materials in Electronics
Erschienen in: Journal of Materials Science: Materials in Electronics 23/2019

30.10.2019

Electrochemical properties of Co-doped rod-like Li4Ti4.92Co0.08O12 as anode material for lithium-ion batteries

verfasst von: Zongfeng Li, Guixia Dong, Ruohan Guan, Jingrui Kang

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 23/2019

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Abstract

In this study, the Li4Ti5−xCoxO12 anode material was synthesized by hydrothermal method using Ti(OC4H9)4, LiOH·H2O and CoAc2 as raw materials. When the doping molar amount of Co is 0.08, the prepared Li4Ti4.92Co0.08O12 anode material has good electrochemical performance. The material sample is a small-sized and rod-like structure (about 100–400 nm), and the rod-like structures of different sizes are sparsely arranged to successfully improve the discharge specific capacity. Doping Co2+ makes the 3d orbit of pure phase Li4Ti5O12 have electrons, which increases the electronic conductivity of the material. In the rate performance test, the discharge specific capacity is as high as 256.9 mAh g−1 at a current density of 20 mA g−1. In the cycle performance test, the specific capacity of Li4Ti4.92Co0.08O12 anode material was stable at 156.5 mAh g−1 at the current density is 1 A g−1 after 1000 cycles, and the capacity retention rate was as high as 92.17%.
Vorheriger Artikel Silver (Ag) nanoparticle-decorated expanded graphite (EG) epoxy composite: evaluating thermal and electrical properties
Nächster Artikel Ti-doped indium gallium oxide electrolyte–insulator–semiconductor membranes for multiple ions and solutes detectors

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Metadaten
Titel
Electrochemical properties of Co-doped rod-like Li4Ti4.92Co0.08O12 as anode material for lithium-ion batteries
verfasst von
Zongfeng Li
Guixia Dong
Ruohan Guan
Jingrui Kang
Publikationsdatum
30.10.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 23/2019
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-019-02424-4

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