A facile and novel method for the fabrication of core‐shell nanoparticles (PTMA@SiO₂) based on a poly(2,2,6,6‐tetramethylpiperidinyloxy‐4‐yl methacrylate) (PTMA) core and a porous SiO₂ shell is reported. The core‐shell nanoparticles are further self‐assembled with negatively charged multi‐walled carbon nanotubes (MWCNTs), which results in the formation of a free‐standing cathode electrode. The porous SiO₂ shell not only effectively improves the stability of the linear PTMA redox polymer with low molar mass in organic electrolytes but also leads to the uniform dispersion of PTMA active units in the MWCNTs conductive network. The PTMA@SiO₂@MWCNT composite electrode exhibits a specific capacity as high as 73.8 mAh g at 1 C and only 0.11% capacity loss per cycle at a rate of 2 C.

中文翻译：

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具有氧化还原聚合物核和二氧化硅多孔壳的核壳纳米粒子，作为锂离子电池的高性能阴极材料

一种基于聚（2,2,6,6-四甲基哌啶基氧基-4-甲基丙烯酸甲酯）（PTMA）核和多孔SiO ₂壳的核-壳纳米粒子（PTMA @ SiO ₂）的简便新颖的制备方法是报告。核壳纳米粒子与带负电荷的多壁碳纳米管（MWCNT）进一步自组装，这导致形成独立的阴极。多孔的SiO ₂壳层不仅有效地提高了有机电解质中低摩尔质量的线性PTMA氧化还原聚合物的稳定性，而且还导致PTMA活性单元在MWCNTs导电网络中的均匀分散。PTMA @ SiO ₂MWCNT复合电极在1 C时显示出高达73.8 mAh g的比容量，在2 C的速率下每个循环仅显示0.11％的容量损失。