锂离子电池的制备及电化学性能 外文文献翻译及原文.zip
锂离子电池的制备及电化学性能 外文文献翻译及原文,preparation and electrochemical performance of li4ti5o12/carbon/carbonnano-tubes for lithium ion batteryli4ti5o12/c/cnts 锂离子电池的制备及电化学性能 a b s t r a c ta li4ti5o...
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Preparation and electrochemical performance of Li4Ti5O12/carbon/carbonnano-tubes for lithium ion battery
Li4Ti5O12/C/CNTs 锂离子电池的制备及电化学性能
a b s t r a c t
A Li4Ti5O12/carbon/carbon nano-tubes (Li4Ti5O12/C/CNTs) composite was synthesized by using a solid-state method. For comparison, a Li4Ti5O12/carbon (Li4Ti5O12/C) composite and a pristine Li4Ti5O12were also synthesized in the present study. The microstructure and morphology of the prepared sam-ples are characterized by XRD and SEM. Electrochemical properties of the samples are eva luated byusing galvanostatic discharge/charge tests and AC impedance spectroscopy. The results reveal that theLi4Ti5O12/C/CNTs composite exhibits the best rate capability and cycling stability among the samples ofLi4Ti5O12, Li4Ti5O12/C and Li4Ti5O12/C/CNTs. At the charge–discharge rate of 0.5 C, 5.0 C and 10.0 C, itsdischarge capacities were 163 mAh/g, 148 mAh/g and 143 mAh/g, respectively. After 100 cycles at 5.0 C,it remained at 146 mAh/g.
摘要
Li4Ti5O12/C/CNTs 复合材料使用固相反应法合成。现在将Li4Ti5O12/C复合材料和传统的Li4Ti5O12 材料做对比研究。用XRD和SEM对样品的微观结构和形貌做分析。样品的电化学性质通过恒流源充放电测试和交流阻抗阻抗谱。结果表明 Li4Ti5O12/C/CNTs 在Li4Ti5O12 、Li4Ti5O12/C、Li4Ti5O12/C/CNTs中具有最好的比容量和充放电稳定性。在0.5℃、5℃和10℃的条件下充放电率分别是163 mAh/g, 148 mAh/g and 143 mAh/g。在5.0℃下充放电循环一百次，仍能保持148 mAh/g的容量。
Li4Ti5O12/C/CNTs 锂离子电池的制备及电化学性能
a b s t r a c t
A Li4Ti5O12/carbon/carbon nano-tubes (Li4Ti5O12/C/CNTs) composite was synthesized by using a solid-state method. For comparison, a Li4Ti5O12/carbon (Li4Ti5O12/C) composite and a pristine Li4Ti5O12were also synthesized in the present study. The microstructure and morphology of the prepared sam-ples are characterized by XRD and SEM. Electrochemical properties of the samples are eva luated byusing galvanostatic discharge/charge tests and AC impedance spectroscopy. The results reveal that theLi4Ti5O12/C/CNTs composite exhibits the best rate capability and cycling stability among the samples ofLi4Ti5O12, Li4Ti5O12/C and Li4Ti5O12/C/CNTs. At the charge–discharge rate of 0.5 C, 5.0 C and 10.0 C, itsdischarge capacities were 163 mAh/g, 148 mAh/g and 143 mAh/g, respectively. After 100 cycles at 5.0 C,it remained at 146 mAh/g.
摘要
Li4Ti5O12/C/CNTs 复合材料使用固相反应法合成。现在将Li4Ti5O12/C复合材料和传统的Li4Ti5O12 材料做对比研究。用XRD和SEM对样品的微观结构和形貌做分析。样品的电化学性质通过恒流源充放电测试和交流阻抗阻抗谱。结果表明 Li4Ti5O12/C/CNTs 在Li4Ti5O12 、Li4Ti5O12/C、Li4Ti5O12/C/CNTs中具有最好的比容量和充放电稳定性。在0.5℃、5℃和10℃的条件下充放电率分别是163 mAh/g, 148 mAh/g and 143 mAh/g。在5.0℃下充放电循环一百次，仍能保持148 mAh/g的容量。
