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首页> 外文期刊>Materials Science and Engineering >Electrophoretic deposition of LiFePO_4 onto 3-D current collectors for high areal loading battery cathodes
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Electrophoretic deposition of LiFePO_4 onto 3-D current collectors for high areal loading battery cathodes

机译：将LiFePO_4电泳沉积到3-D集电器上以用于大面积负载电池阴极

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摘要

Three-dimensional (3-D) current collectors in lithium-ion batteries with high areal loading of cathode materials enables reduced packaging weight and cost compared to planar current collector materials. Here, we demonstrate the use of electrophoretic deposition (EPD) as a route to prepare thick cathode assembles in 3-D scaffolds using LiFePO4 with areal loadings measured from 2 mg/cm(2) and up to 20 mg/cm(2) in conductive carbon cloth materials. Our findings demonstrate the LiFePO4 cathodes with areal capacity up to similar to 2.4 mAh/cm(2) and minimal decay ( 0.11%) per cycle. This emphasizes EPD as both a technique to overcome the limitations of conventional manufacturing approaches in scaling to 3-D collector architectures for improved cell-level energy density, but also a route to transition away from costly NMP processing toward cheaper, less toxic solvents, such as ethanol as is demonstrated in this study.
机译：与平面集电器材料相比，具有高面积阴极材料负载的锂离子电池中的三维（3-D）集电器可降低包装重量和成本。在这里，我们演示了使用电泳沉积（EPD）作为使用LiFePO4在3-D支架中制备厚阴极组件的途径，其中LiFePO4的面载荷为2 mg / cm（2）到20 mg / cm（2）。导电碳布材料。我们的发现表明，LiFePO4阴极的面积容量高达2.4 mAh / cm（2），每个循环的衰减最小（<0.11％）。这强调了EPD，它既是一种克服传统制造方法在扩展至3-D收集器体系结构以提高电池级能量密度方面的局限性的技术，又是一种从昂贵的NMP处理向廉价，毒性较小的溶剂过渡的途径，如这项研究中所示的乙醇。

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