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Conjugated Microporous Polymers with Bipolar and Double Redox‐Active Centers for High‐Performance Dual‐Ion, Organic Symmetric Battery
Author(s) -
Wang Hengguo,
Li Qiang,
Wu Qiong,
Si Zhenjun,
Lv Xiaoling,
Liang Xitong,
Wang Huilin,
Sun Lin,
Shi Weidong,
Song Shuyan
Publication year - 2021
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.202100381
Subject(s) - materials science , conjugated microporous polymer , microporous material , redox , electrochemistry , density functional theory , battery (electricity) , conjugated system , polymer , ion , dual (grammatical number) , chemical engineering , chemistry , computational chemistry , electrode , organic chemistry , thermodynamics , physics , composite material , engineering , metallurgy , art , literature , power (physics)
Abstract Redox‐active conjugated microporous polymers (RCMPs) have received remarkable interest in electrochemical energy‐storage systems in view of their porous structure and tunable redox nature. This work presents an effective strategy to construct RCMPs with bipolar and double redox‐active centers by integrating copper (II) tetraaminephthalocyanine (CuTAPc) and 1,4,5,8‐naphthalenetetracarboxylic dianhydride (NTCDA) units into the RCMPs (CuPcNA‐CMP). As expected, CuPcNA‐CMP has potential application in the half cells of dual‐ion batteries (lithium based DIBs, LDIBs), asymmetric DIBs (graphite based DIBs, ADIBs), and symmetric DIBs (all organic DIBs, SDIBs). Among them, LDIBs show a high reversible capacity (202.4 mAh g −1 at 0.2 A g −1 ) and excellent rate capability (86.1 mAh g −1 at 5 A g −1 ). And ADIBs also show a high reversible capacity (245.3 mAh g −1 at 0.1 A g −1 ), long cycle stability with capacity retention of 89% after 500 cycles, and good rate performance (125.1 mAh g −1 at 5 A g −1 ). In addition, SDIBs show high initial charge/discharge capacities of 269.4/198.5 mAh g −1 at 0.05 A g −1 and a high cell voltage of 2.5 V. Meanwhile, the mechanism of CuPcNA‐CMP on hosting both anions (PF 6 − ) and cations (Li + ) is investigated by detailed experimental analysis and density functional theory studies.