Combination of high performance organic cathode Calix[4]quinone and practical biocarbon in sodium -ion batteries
Combination of high performance organic cathode Calix[4]quinone and practical biocarbon in sodium -ion batteries
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钠离子电池中高性能有机正极Calix[4]醌与实用生物碳的组合
DOI：
10.1016/j.orgel.2020.105702
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发表时间：
2020
影响因子：
3.2
通讯作者：
Shengxue Yu
中科院分区：
文献类型：
--
作者：
Wenjun Zhou;Xueqian Zhang;Weisheng Zhang;Weiwei Huang;Bing Yan;Haixin Li;Shengxue Yu
目前，钠离子电池（SIB）以其丰富的资源和低廉的价格受到广泛关注。一些醌类化合物具有比容量高、结构多样、环境友好、氧化还原可逆性好等优点，是理想的正极材料。杯[4]醌（C4 Q）的理论比容量高达446 mA h g− 1，但其在有机电解质中的溶解速率快、电导率低等问题一直困扰着人们。本研究以秘鲁酸浆为原料，通过热裂解制备了一种经济实用的多孔管状结构生物炭-PPL。首次在SIB中从花萼到C4 Q。C4 Q/PPL阴极的初始容量为435 mA h g− 1，具有稳定的循环性能（在0.1 C下100次循环后为195 mA h g− 1）和出色的倍率性能（在1 C下为170 mA h g− 1）。
Nowadays, sodium-ion batteries (SIBs) have received extensive attention for their abundant resources and low price. Some quinone compounds have the advantages of high specific capacity, diverse structures, environmental friendliness and good redox reversibility, are ideal cathode materials. Calix[4]quinone (C4Q) with a high theoretical specific capacity of 446 mA h g−1is synthesized as cathodes, while it is still puzzled over low conductivity and high dissolution rate in organic electrolytes. In this study, a kind of economical and practical biocarbon-PPL with porous tubular structures is prepared by pyrolysis of Physalis Peruviana L. Calyx to immobilize C4Q in SIBs for the first time. The C4Q/PPL cathode presents an initial capacity of 435 mA h g−1with stable cyclability (195 mA h g−1after 100 cycles at 0.1 C) and great rate performance (170 mA h g−1at 1 C).