Electrochemical properties of stacked-nanoflake Li4Ti5O12 spinel synthesized by a polymer-pyrolysis method |
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| Institution: | 1. Hubei Collaboration Innovation Center of Non-power Nuclear Technology, Hubei University of Science and Technology, Xianning 437100, China;2. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China;3. School of Nuclear Technology & Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China |
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| Abstract: | Stacked-nanoflake Li4Ti5O12 spinel was synthesized via the pyrolysis of a Li–Ti copolymeric precursor formed by in situ polymerization of LiOH and Ti(OC4H9)4] and acrylic acid. XRD and SEM characterization shows that the powders calcined at 700 °C for 3 h was well-crystallized particles with submicron diameter. Charge–discharge measurement showed the Li4Ti5O12 electrode had displayed excellent rate capability and delivered reversible capacity of 171, 158, 148, 138 and 99 mAh g−1 at rates of 0.1C, 0.5C, 1C, 2C and 4C, respectively. The test electrode also showed excellent cyclability as the capacity retains 96.1% after 60 cycles between 0.5 and 2.5 V. |
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| Keywords: | Polymer-pyrolysis Lithium ion battery Anode Non-graphite material |
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