High-capacity organic sodium ion batteries using a sustainable C4Q/CMK-3/SWCNT electrode
High-capacity organic sodium ion batteries using a sustainable C4Q/CMK-3/SWCNT electrode
复制标题
使用可持续 C4Q/CMK-3/SWCNT 电极的高容量有机钠离子电池
DOI：
10.1039/c9qi00507b
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发表时间：
2019
影响因子：
7
通讯作者：
Yuyu Du
中科院分区：
文献类型：
--
作者：
Bing Yan;Lijiang Wang;Weiwei Huang;Shibing Zheng;P;eng Hu;Yuyu Du
Calix[4]quinone (C4Q) is a high-capacity organic cathode material, but its solubility in conventional organic electrolytes causes capacity decay, which leads to unavoidable restrictions in the practical application. Our previous research has revealed that the dissolution of C4Q can be effectively restricted by encapsulating it in CMK-3, but there is still room for improvement in its circulation performance and rate capability. Herein, we prepared a series of C4Q/CMK-3/SWCNT composites for sodium ion batteries (SIBs) by a facile deaerating–stirring method. The C4Q/CMK-3/SWCNT (40 wt%, 40 wt%, 10 wt%) cathode delivers a high and stable discharge capacity (290 mA h g−1) after 100 cycles at a current rate of 0.1 C. Even at a high rate of 1 C, its capacity is 346 mA h g−1. The stability and electronic conductivity of C4Q/CMK-3/SWCNTs are intensified by the three-dimensional conductive network. Furthermore, the redox properties and sodium storage average potential platform of C4Q are first calculated by density functional theory (DFT).
