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Switching between Local and Global Aromaticity in a Conjugated Macrocycle for High‐Performance Organic Sodium‐Ion Battery Anodes
Author(s) -
Eder Simon,
Yoo DongJoo,
Nogala Wojciech,
Pletzer Matthias,
Santana Bonilla Alejandro,
White Andrew J. P.,
Jelfs Kim E.,
Heeney Martin,
Choi Jang Wook,
Glöcklhofer Florian
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202003386
Subject(s) - aromaticity , anode , organic radical battery , conjugated system , battery (electricity) , electrode , sodium ion battery , ion , degradation (telecommunications) , cathode , materials science , chemical engineering , chemistry , inorganic chemistry , electrochemistry , molecule , organic chemistry , polymer , computer science , telecommunications , power (physics) , physics , quantum mechanics , faraday efficiency , engineering
Aromatic organic compounds can be used as electrode materials in rechargeable batteries and are expected to advance the development of both anode and cathode materials for sodium‐ion batteries (SIBs). However, most aromatic organic compounds assessed as anode materials in SIBs to date exhibit significant degradation issues under fast‐charge/discharge conditions and unsatisfying long‐term cycling performance. Now, a molecular design concept is presented for improving the stability of organic compounds for battery electrodes. The molecular design of the investigated compound, [2.2.2.2]paracyclophane‐1,9,17,25‐tetraene (PCT), can stabilize the neutral state by local aromaticity and the doubly reduced state by global aromaticity, resulting in an anode material with extraordinarily stable cycling performance and outstanding performance under fast‐charge/discharge conditions, demonstrating an exciting new path for the development of electrode materials for SIBs and other types of batteries.