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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Improved rate capability of the conducting functionalized FTO-coated Li-[Li0.2Mn0.54Ni0.13Co0.13]O-2 cathode material for Li-ion batteries
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Improved rate capability of the conducting functionalized FTO-coated Li-[Li0.2Mn0.54Ni0.13Co0.13]O-2 cathode material for Li-ion batteries

机译：锂离子电池用导电功能化FTO涂覆的Li- [Li0.2Mn0.54Ni0.13Co0.13] O-2正极材料的倍率性能提高

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摘要

Layered FTO-coated Li[Li0.2Co0.13Ni0.13Mn0.54]O-2 (FTO-LRMO) nanoparticles were synthesized by a simple polymer-pyrolysis method and then coated with F-0.3-SnO2 (FTO) to form a conductive protection layer. The FTO-LRMO electrode demonstrates a high initial columbic efficiency of 88%, a large reversible capacity of similar to 296 mA h g(-1), and an excellent cyclability with 83% capacity retention after 300 cycles. Particularly, this material can deliver a quite high capacity of 164 mA h g(-1) at a high rate of 2400 mA g(-1), exhibiting excellent rate capability. This superior electrochemical performance results from the conducting functionalized surface modification, which not only offers an effective protection layer to form a stable SEI film and maintain the stability of the interface structure, but also decreases the interface and reaction impedance by the conductive coating. Therefore, the conducting functionalized coating by FTO is a simple, effective and novel way to enhance the electrochemical performance of lithium-rich Mn-based oxide cathodes for practical battery applications.
机译：通过简单的聚合物热解法合成层状FTO包覆的Li [Li0.2Co0.13Ni0.13Mn0.54] O-2（FTO-LRMO）纳米粒子，然后用F-0.3-SnO2（FTO）包覆以形成导电性保护层。 FTO-LRMO电极显示出88％的高初始哥伦布效率，类似于296 mA h g（-1）的大可逆容量以及300次循环后具有83％容量保持率的出色循环能力。特别地，这种材料可以以2400 mA g（-1）的高速率提供164 mA h g（-1）的相当高的容量，表现出出色的速率能力。这种优异的电化学性能来自于导电功能化的表面改性，该改性不仅提供了有效的保护层以形成稳定的SEI膜并保持界面结构的稳定性，还降低了导电涂层的界面和反应阻抗。因此，通过FTO进行的导电功能化涂层是一种简单，有效且新颖的方法，可以提高实际电池应用中富含锂的Mn基氧化物阴极的电化学性能。

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