Quinone-Amine Polymer Nanoparticles Prepared through Facile Precipitation Polymerization as Ultrafast and Ultralong Cycle Life Cathode Materials for Lithium-Ion Batteries,Advanced Functional Materials

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Quinone-Amine Polymer Nanoparticles Prepared through Facile Precipitation Polymerization as Ultrafast and Ultralong Cycle Life Cathode Materials for Lithium-Ion Batteries
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2022-02-19 , DOI: 10.1002/adfm.202111307
Yeqing Shi ₁ , Junkai Yang ₁ , Jixing Yang ₁ , Zhuanping Wang ₁ , Zifeng Chen ₁ , Yunhua Xu ₁

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Polymer electrode materials are often poorly soluble in liquid organic electrolytes of lithium-ion batteries, yet they suffer from issues of severe agglomeration and complicated synthesis processes, which hinder their practical applications. Herein, spherical cross-linked quinone-amine polymer nanoparticles (denoted as PQANPs) are synthesized through a facile precipitation polymerization, which can effectively address the agglomeration problems of polymer electrode materials. The cross-linking degrees of polymers and diameters of PQANPs can be facilely tuned by adjusting the feed ratios of p-benzoquinone to 3,3′-diaminobenzidine. The optimized PQANP demonstrates excellent electrochemical performance with an ultrafast rate capability of 25 A g⁻¹ and an ultralong cycle life of 20 000 cycles, which exceed all benzoquinone-based polymer electrode materials reported in the literature. The findings offer an efficient and convenient strategy for high-performance nanostructured polymer electrode materials.

中文翻译：

通过简易沉淀聚合制备的醌胺聚合物纳米颗粒作为锂离子电池的超快和超长循环寿命阴极材料

聚合物电极材料在锂离子电池液态有机电解质中的溶解性较差，存在团聚严重、合成工艺复杂等问题，阻碍了其实际应用。在此，通过简便的沉淀聚合合成了球形交联醌-胺聚合物纳米粒子（称为PQANPs），可有效解决聚合物电极材料的团聚问题。通过调整对苯醌与 3,3'-二氨基联苯胺的进料比，可以很容易地调节聚合物的交联度和 PQANPs 的直径。优化的 PQANP 表现出优异的电化学性能，具有 25 A g ^{-1的超快倍率能力}和20000次循环的超长循环寿命，超过了文献报道的所有苯醌基聚合物电极材料。该研究结果为高性能纳米结构聚合物电极材料提供了一种高效便捷的策略。

更新日期：2022-02-19

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