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author:

Wu, Xing (Wu, Xing.) [1] | Feng, Xin (Feng, Xin.) [2] | Yuan, Jingjun (Yuan, Jingjun.) [3] | Yang, Xiukang (Yang, Xiukang.) [4] | Shu, Hongbo (Shu, Hongbo.) [5] | Yang, Chengkai (Yang, Chengkai.) [6] | Liu, Zheyuan (Liu, Zheyuan.) [7] (Scholars:刘哲源) | Peng, Jinfeng (Peng, Jinfeng.) [8] | Liu, Enhui (Liu, Enhui.) [9] | Tan, Songting (Tan, Songting.) [10] | Gao, Ping (Gao, Ping.) [11]

Indexed by:

EI SCIE

Abstract:

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 mAh g (- 1) at 100 mA g (- 1) and 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.

Keyword:

Cycling stability High energy density Organic batteries Porphyrin cathode Thiophene

Community:

  • [ 1 ] [Wu, Xing]Xiangtan Univ, Coll Chem, Key Lab Enviromentally Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China
  • [ 2 ] [Feng, Xin]Xiangtan Univ, Coll Chem, Key Lab Enviromentally Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China
  • [ 3 ] [Yuan, Jingjun]Xiangtan Univ, Coll Chem, Key Lab Enviromentally Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China
  • [ 4 ] [Yang, Xiukang]Xiangtan Univ, Coll Chem, Key Lab Enviromentally Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China
  • [ 5 ] [Shu, Hongbo]Xiangtan Univ, Coll Chem, Key Lab Enviromentally Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China
  • [ 6 ] [Liu, Enhui]Xiangtan Univ, Coll Chem, Key Lab Enviromentally Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China
  • [ 7 ] [Tan, Songting]Xiangtan Univ, Coll Chem, Key Lab Enviromentally Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China
  • [ 8 ] [Gao, Ping]Xiangtan Univ, Coll Chem, Key Lab Enviromentally Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China
  • [ 9 ] [Yang, Chengkai]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
  • [ 10 ] [Liu, Zheyuan]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
  • [ 11 ] [Peng, Jinfeng]Xiangtan Univ, Sch Mech Engn, Xiangtan 411105, Peoples R China
  • [ 12 ] [Gao, Ping]Hunan Joint Int Lab Adv Mat & Technol Clean Energ, Changsha 410082, Peoples R China

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Source :

ENERGY STORAGE MATERIALS

ISSN: 2405-8297

Year: 2022

Volume: 46

Page: 252-258

2 0 . 4

JCR@2022

1 8 . 9 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:91

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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