【摘 要】
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In situ growth of carbon nanomaterials on active substance is a very favorable strategy for the preparation of electrode in lithium-ion batteries with excellent electrochemical performance and high stability.Small-sized TiO2 nanoparticles intercalated int
【机 构】
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Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 3
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In situ growth of carbon nanomaterials on active substance is a very favorable strategy for the preparation of electrode in lithium-ion batteries with excellent electrochemical performance and high stability.Small-sized TiO2 nanoparticles intercalated into carbon nanosheets(CNS@TiO2SNP-600)were successfully synthesized via in-situ polymerization-carbonization method,utilizing layered H2Ti4O9(HTO)as template and benzidine as carbon source.The morphology and size of TiO2 are greatly influenced by carbonization temperature.The coin cell with the CNS@TiO2SNP-600 electrode demonstrates a discharge specific capacity of 430.4 mAh·g-1 at a current density of 0.1 A·g-1,and the capacity retention rate is 88.1％after 100 cycles;and it also displays a high discharge specific capacity of 101.8 mAh·g-1 at a high current density of 12.8 A·g-1.The excellent electrochemical performances can be ascribed to the capacitance effect originated from the intercalated structure of in-situ grown CNS and TiO2 nanoparticles.We believe this type of materials can be widely used in the lithium-ion batteries and other related green chemical fields.
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