High-Performance PDB Organic Cathodes Reinforced by 3D Flower-like Carbon for Lithium-/Sodium-Ion Batteries
High-Performance PDB Organic Cathodes Reinforced by 3D Flower-like Carbon for Lithium-/Sodium-Ion Batteries
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用于锂/钠离子电池的 3D 花状碳增强的高性能 PDB 有机阴极
DOI：
10.1021/acsaem.1c02393
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发表时间：
2021-11
影响因子：
6.4
通讯作者：
Liwei Liu
中科院分区：
文献类型：
--
作者：
Cunguo Wang;Qun Ji;Rongrong Chu;Zaka Ullah;Mengge Zheng;Xuan Dong;Yue Sun;Qi Li;Liwei Liu
有机化合物材料具有环保、资源丰富、结构通用性强、组装成本低等优点，被公认为锂离子和钠离子电池的良好正极材料。然而，有机化合物固有的较高的溶解度和较低的电导率严重影响了其工业应用。在这里，我们报道了一种带有三维花状多孔碳的聚(2，3-二硫-1，4-苯二酚)复合材料(PDB/3D-FC)，是一种有价值的电池电极选择。情景聚合方法使PDB的分布更加均匀，三维的花状多孔碳结构阻止了PDB的积累。此外，PDB/3D-FC的层次化多孔结构为电子/离子提供了有效的输运路径。PdB/3D-FC电极在1Ag-1的超高电流密度下，锂离子电池的倍率容量为203mAhg-1，钠离子电池的倍率容量为183mAhg-1。该制备方法具有一定的通用性，可用于提高其他有机电极材料的电化学性能。
Organic compound materials offer environmental protection, abundant resources, strong versatility in structure, and low-cost assembly, owing to which these being recognized as auspicious cathode materials for lithium- and sodium-ion batteries. However, the inherent higher solubility and lower conductivity of organic compound materials severely affect their industrial applications. Herein, we report a poly(2,3-dithio-1,4-benzoquinone) composite with three-dimensional flower-like porous carbon (PDB/3D-FC) as a worthy choice for a battery electrode. Thein situpolymerization methodology makes the distribution of PDB more uniform, and the three-dimensional flower-like porous carbon structure prevents the accumulation of PDB. Moreover, the hierarchical porous structure of PDB/3D-FC provides an effective transport path for electrons/ions. Taking benefit from the desirable fabrication strategy and well-chosen materials, the PDB/3D-FC electrode exhibits an excellent rate capacity of 203 mAh g–1in a lithium-ion battery and 183 mAh g–1in a sodium-ion battery under an ultrahigh current density of 1 A g–1. The preparation strategy reported in this paper is general and suitable for enhancing the electrochemical characteristics of other organic electrode materials.
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