• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Electrochemical Science >High Capacity Prussian Blue Analogue@Reduced Graphene Oxide/Li4Ti5O12 Composite as an Anode Material for Lithium- Ion Batteries with a Broad Voltage Window
【24h】

High Capacity Prussian Blue Analogue@Reduced Graphene Oxide/Li4Ti5O12 Composite as an Anode Material for Lithium- Ion Batteries with a Broad Voltage Window

机译：高容量普鲁士蓝类似物@还原氧化石墨烯/ Li 4 Ti 5 O 12 复合材料作为宽范围锂离子电池的负极材料电压窗口

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A narrow electrochemical window, poor electronic conductivity and lithium ions transfer capability slowdown the mass application of Li 4 Ti 5 O 12 (LTO) as power batteries in passenger cars with a long range.An effective way to improve the capacity and energy density of LTO is to include it in a compositematerials to provide a good ionic and electronic conductive network followed by excess discharge toabout 0 V vs. Li + /Li. Mn-Fe based Prussian blue analogue (Mn-PBA) nanoparticles with special openframework structure anchor on the reduced graphene oxide (rGO) conferred a high electronic and ionicconductivity and similar charge/discharge voltage plateaus with LTO. As a result, the Mn-PBA@rGO/LTO composite takes full advantages of high capacity Mn-PBA and the high electronicconductivity rGO sheets. It delivered a high reversible capacity (301.7 mAh g ?1 at 0.2 C) and superiorrate performance (208.5 mAh g ?1 at 30 C) in a broad electrochemical voltage range between 0.01 and 3V in half cells. Furthermore, a capacity of 232.6 mAh g ?1 at 1 C of Mn-PBA@rGO/LTO?10% wasmeasured and good cycling performance was obtained in pouch cells with LiNi 0.6 Co 0.2 Mn 0.2 O 2(NCM622) as a cathode and Mn-PBA@rGO/LTO?10% as anode, indicating that the Mn-PBA@rGO/LTO?10% composite is a promising anode material for lithium-ion batteries (LIBs).
机译：狭窄的电化学窗口，较差的电子电导率和锂离子传输能力减慢了Li 4 Ti 5 O 12（LTO）作为长距离乘用车动力电池的大规模应用。提高LTO容量和能量密度的有效途径要将其包含在复合材料中，以提供良好的离子和电子导电网络，然后对Li + / Li进行约0 V的过量放电。具有特殊开放框架结构的锰铁基普鲁士蓝类似物（Mn-PBA）纳米颗粒锚固在还原的氧化石墨烯（rGO）上，赋予LTO高的电子和离子导电性，并具有类似的充电/放电电压平稳期。结果，Mn-PBA @ rGO / LTO复合材料充分利用了高容量Mn-PBA和高电导率rGO薄板的优势。它在半电池中的0.01至3V的宽电化学电压范围内提供了高可逆容量（在0.2 C时为301.7 mAh g？1）和优异的性能（在30 C时为208.5 mAh g？1）。此外，在以LiNi 0.6 Co 0.2 Mn 0.2 O 2（NCM622）为正极，以LiNi 0.6 Co 0.2 Mn 0.2O 2（NCM622）为正极， Mn-PBA @ rGO /LTO≥10％作为阳极，表明Mn-PBA @ rGO /LTO≥10％复合材料是锂离子电池（LIB）的有希望的阳极材料。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号