Preparation of TiO_2-(B)/SnO_2 nanostructured composites and its performance as anodes for lithium-ion batteries

Nayely Pineda-Aguilar; Margarita Sanchez-Dominguez; Eduardo M. Sanchez-Cervantes; Lorena L. Garza-Tovar

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Preparation of TiO_2-(B)/SnO_2 nanostructured composites and its performance as anodes for lithium-ion batteries

机译：TiO_2-（B）/ SnO_2纳米结构复合材料的制备及其作为锂离子电池阳极的性能

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TiO_2-(B)/SnO_2 nanostructured composites have been prepared by the combination of an oil-in-water (O/W) microemulsion reaction method (MRM) and a hydrothermal method. Its electrochemical properties were investigated as anode materials in lithium-ion battery, and characterization was carried out by XRD, BET, Raman, FE-SEM, EDXS, and TEM. The as-prepared composites consisted of monoclinic phase TiO_2-(B) nanoribbons decorated with cassiterite structure SnO_2 nanoparticles. The electrochemical performance of the TiO_2-(B)/SnO_2 50/50 nanocomposite electrode showed higher reversible capacity of 265 mAh/g than that of the pure SnO_2 electrode, 79 mAh/g, after 50 cycles at 0.1 C in a voltage range of 0.01-3.0 V at room temperature. In addition, the coulombic efficiency of the TiO_2-(B)/SnO_2 50/50 nanocomposite remains at an average greater than 90% from the 2nd to the 50th cycles. The TiO_2-(B)/SnO_2 50/50 nanocomposite presented the best balance between the mechanical support effect provided by TiO_2-(B) that also contributes to the LIB capacity and the SnO_2 that provides high specific capacity.

机译：通过油包水（O / W）微乳液反应方法（MRM）和水热法制备，制备TiO_2-（B）/ SnO_2纳米结构复合材料。在锂离子电池中研究其电化学性能作为阳极材料，并通过XRD，BET，拉曼，Fe-SEM，EDX和TEM进行表征。由制成的复合材料由单斜晶相TiO_2-（B）组成，纳米波堡装饰着Cassiterite结构SnO_2纳米颗粒。 TiO_2-（b）/ snO_2 50/50纳米复合电极的电化学性能显示出较高的可逆容量为265mAh / g的纯SnO_2电极，79mAh / g在0.1℃的电压范围内的50次循环后室温下0.01-3.0V。此外，TiO_2-（b）/ snO_2 50/50纳米复合材料的库仑效率在2nd至50循环的平均值为大于90％。 TiO_2-（B）/ SnO_2 50/50纳米复合材料呈现了TiO_2-（B）提供的机械支撑效果之间的最佳平衡，这也有助于LIB容量和提供高特定容量的SNO_2。

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来源
《Journal of Materials Research》 |2020年第18期|2491-2505|共15页
作者
Nayely Pineda-Aguilar; Margarita Sanchez-Dominguez; Eduardo M. Sanchez-Cervantes; Lorena L. Garza-Tovar;
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作者单位

Universidad Autonoma de Nuevo Leon Facultad de Ciencias Quimicas San Nicolas de los Garza Nuevo Leon 66455 Mexico Centro de Investigacion en Materiales Avanzados S.C. (CIMAV) Unidad Monterrey Parque de Investigacion e Innovacion Tecnologica C.P. 66628 Apodaca Nuevo Leon Mexico;

Centro de Investigacion en Materiales Avanzados S.C. (CIMAV) Unidad Monterrey Parque de Investigacion e Innovacion Tecnologica C.P. 66628 Apodaca Nuevo Leon Mexico;

Universidad Autonoma de Nuevo Leon Facultad de Ciencias Quimicas San Nicolas de los Garza Nuevo Leon 66455 Mexico;

Universidad Autonoma de Nuevo Leon Facultad de Ciencias Quimicas San Nicolas de los Garza Nuevo Leon 66455 Mexico;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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Preparation of TiO_2-(B)/SnO_2 nanostructured composites and its performance as anodes for lithium-ion batteries

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