Thiophene functionalized porphyrin complexes as novel bipolar organic cathodes with high energy density and long cycle life
Thiophene functionalized porphyrin complexes as novel bipolar organic cathodes with high energy density and long cycle life
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噻吩功能化卟啉配合物作为新型双极有机阴极，具有高能量密度和长循环寿命
DOI：
10.1016/j.ensm.2022.01.020
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发表时间：
2022-01
影响因子：
20.4
通讯作者：
Ping Gao
中科院分区：
文献类型：
--
作者：
Xing Wu;Xin Feng;Jingjun Yuan;Xiukang Yang;Hongbo Shu;Chengkai Yang;Zheyuan liu;Jinfeng Peng;Enhui Liu;Songting Tan;Ping Gao
有机电极材料固有的低电导率、低比容量和高溶解度严重阻碍了其在电化学储能系统中的实际应用。在此，提出了结合卟啉和噻吩官能团的双极性有机分子，[5，15-双-（乙炔基）-10，20-二噻吩基卟啉]M（II），（M= Cu，Zn，Co和2 H）作为新的阴极。硫代磷酸酯基团和氮原子作为活性位点，在氧化还原反应期间提供8个电子转移，与阳离子（Li+）和阴离子（PF 6 −）强烈相互作用，从而实现高电荷存储能力和快速动力学。当CuDETP用于有机锂电池时，它在100 mAg− 1时的可逆容量为350 mAhg− 1，比能量密度为773.6 Wh kg−1（基于阴极材料）。同时，由于在初始充电过程中的自聚合，实现了高达9000次循环的极其稳定的循环能力。该研究对高能量密度和长循环寿命有机电极的分子设计和应用具有重要的启示。
The low intrinsic electrical conductivity, low specific capacity, and high solubility of organic electrode materials have significantly plagued its practical application in electrochemical energy storage systems. Herein, bipolar organic molecules combining porphyrin and thiophene functional groups, [5, 15-bis-(ethynyl)-10, 20-dithienylporphinato]M(II), (M= Cu, Zn, Co, and 2H) are proposed as new cathodes. Thiophene groups and nitrogen atoms act as active sites affording 8 electrons transfer during redox reaction which strongly interact with both cations (Li+) and anions (PF6−), enabling high charge storage capability and fast kinetic. When CuDETP is used in organic lithium batteries, it delivers a reversible capacity of 350 mAhg−1at 100 mAg−1and a high specific energy density of 773.6 Wh kg−1(based on the cathode material). Meanwhile, extremely stable cyclability up to 9000 cycles is achieved owing to the self-polymerziation during initial charging process. This investigation has great enlightenment for the molecular design and application of organic electrodes in terms of both high energy densities and long cycling life.
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影响因子：
41.2
作者：
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通讯作者：
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影响因子：
20.4
作者：
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19
作者：
Lu Zhang;Ismael A. Rodríguez‐Pérez;Heng Jiang;Chong Zhang;Daniel P. Leonard;Qiubo Guo;Wenfeng Wang-Wenfeng-Wan
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影响因子：
41.2
作者：
Shao-Horn, Y;Croguennec, L;O'Keefe, MA
通讯作者：
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影响因子：
8.6
作者：
Lin, Xiu-Mei;Wu, De-Yin;Fichtner, Maximilian
通讯作者：
Fichtner, Maximilian