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首页> 外文期刊>International Journal of Electrochemical Science >High Volumetric Energy Density Lithium Ion Battery with Titania@Carbon Nanostructure Electrode
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High Volumetric Energy Density Lithium Ion Battery with Titania@Carbon Nanostructure Electrode

机译：Titania @ Carbon纳米结构电极的高容量能量密度锂离子电池

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摘要

In typical lithium ion batteries, anodes mainly contained active materials, a binder such aspolyvinylidene fluoride (PVDF), and a conducting agent such as Ketjen black. In this study, weproposed a conducting agent-free electrode structure (f-TiO2@C) fabricated using TiO2@C, as anactive material, with graphitic-like carbon shells and PVDF in the absence of the conducting material.For comparison, a conventional electrode (c-TiO2@C) was fabricated using TiO2@C and PVDF withthe conducting material. In addition, the conducting agent-free and conventional electrode structureso were prepared using TiO2, as an active material, heated at 800 C in air atmosphere. The highdischarge capacity and enhanced high rate cycling performance of the f-TiO2@C were attributed to thecarbon shell in the TiO2@C, which might play a role as an efficient conducting agent for the high- performance lithium ion batteries. Furthermore, the f-TiO2@C as a conducting agent-free electrodeexhibited much enhanced volumetric capacity and cycle life compared to the c-TiO2@C in thepresence of 10 wt% Ketjen black as a conducting agent.
机译：在典型的锂离子电池中，阳极主要包含活性材料，诸如聚偏二氟乙烯（PVDF）的粘合剂和诸如科琴黑的导电剂。在这项研究中，我们提出了使用无导电材料的TiO2 @ C作为活性材料，石墨状碳壳和PVDF制成的无导电剂电极结构（f-TiO2 @ C）。用TiO2 @ C和PVDF与导电材料制成电极（c-TiO2 @ C）。另外，使用TiO 2作为活性材料，在大气中于800℃加热，制备了无导电剂和常规电极结构。 f-TiO2 @ C的高放电容量和增强的高倍率循环性能归因于TiO2 @ C中的碳壳，它可能充当高性能锂离子电池的有效导电剂。此外，在存在10 wt％的科琴黑作为导电剂的情况下，与c-TiO2 @ C相比，作为无导电剂的电极的f-TiO2 @ C的体积容量和循环寿命大大提高。

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