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A Pyrazine‐Based Polymer for Fast‐Charge Batteries
Author(s) -
Mao Minglei,
Luo Chao,
Pollard Travis P.,
Hou Singyuk,
Gao Tao,
Fan Xiulin,
Cui Chunyu,
Yue Jinming,
Tong Yuxin,
Yang Gaojing,
Deng Tao,
Zhang Ming,
Ma Jianmin,
Suo Liumin,
Borodin Oleg,
Wang Chunsheng
Publication year - 2019
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.201910916
Subject(s) - pyrazine , cathode , raman spectroscopy , polymer , x ray photoelectron spectroscopy , materials science , metal , redox , ion , fourier transform infrared spectroscopy , chemical engineering , nanotechnology , chemistry , organic chemistry , composite material , physics , metallurgy , optics , engineering
The lack of high‐power and stable cathodes prohibits the development of rechargeable metal (Na, Mg, Al) batteries. Herein, poly(hexaazatrinaphthalene) (PHATN), an environmentally benign, abundant and sustainable polymer, is employed as a universal cathode material for these batteries. In Na‐ion batteries (NIBs), PHATN delivers a reversible capacity of 220 mAh g −1 at 50 mA g −1 , corresponding to the energy density of 440 Wh kg −1 , and still retains 100 mAh g −1 at 10 Ag −1 after 50 000 cycles, which is among the best performances in NIBs. Such an exceptional performance is also observed in more challenging Mg and Al batteries. PHATN retains reversible capacities of 110 mAh g −1 after 200 cycles in Mg batteries and 92 mAh g −1 after 100 cycles in Al batteries. DFT calculations, X‐ray photoelectron spectroscopy, Raman, and FTIR show that the electron‐deficient pyrazine sites in PHATN are the redox centers to reversibly react with metal ions.