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Nitrogen‐Linked Hexaazatrinaphthylene Polymer as Cathode Material in Lithium‐Ion Battery
Author(s) -
Wang Jinquan,
En Justin Chua Zhi,
Riduan Siti Nurhanna,
Zhang Yugen
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201904773
Subject(s) - cathode , battery (electricity) , materials science , lithium (medication) , ion , potassium ion battery , polymer , nitrogen , lithium ion battery , chemistry , composite material , organic chemistry , physics , psychology , power (physics) , quantum mechanics , psychiatry
Abstract Nitrogen‐linked hexaazatrinaphthylene polymer ( N 2 ‐HATN ) as organic cathode material with low HOMO–LOMO gap was synthesized and was observed to possess reversible high capacity and unexpected long‐term cycling stability. The pre‐treated N 2 ‐HATN and pRGO combination demonstrated good structure compatibility and the resultant cathode exhibited a constant increment of capacity during the redox cycles. The initial capacity at 0.05 A g −1 was 406 mA h −1 g −1 , and increased to 630 mA h −1 g −1 after 70 cycles. At 0.5 A g −1 discharging rate, the capacity increased from an initial value of 186 mA h −1 g −1 to 588 mA h −1 g −1 after 1600 cycles. The pseudocapacitance‐type behavior is postulated to be attributed to the structure compatibility between the active material and pRGO.