Abstract
Highly conductive electrochemically active materials are required for developing a new generation of ultrafast lithium-ion batteries (LIBs). Recently, a novel family of transition metal coordination polymers derived from arylamines exhibited conductivities of over 1 S cm-1. Low molecular weight analogues of these materials show rich and reversible electrochemical behavior. However, there are just very few reports on the application of such materials in LIBs. In this paper, linear nickel(II) and copper(II) coordination polymers derived from 1,2,4,5-tetraaminobenzene are reported and investigated as anode and cathode materials for LIBs. In the anode mode, both materials show ultrafast cycling behavior with impressive stability. Particularly, for the nickel-based material, a specific capacity of 83 mA h g-1 is reached at 20 A g-1 current density, and 79% of this capacity is retained after 20 000 cycles. Moreover, the copper-based polymer used as a cathode component shows a specific capacity of up to 262 mA h g-1 in the voltage range of 1.5-4.1 V vs Li/Li+, which corresponds to the energy density of 616 W h kg-1.
Original language | English |
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Pages (from-to) | 5197-5205 |
Number of pages | 9 |
Journal | Chemistry of Materials |
Volume | 31 |
Issue number | 14 |
DOIs | |
State | Published - 23 Jul 2019 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2019 American Chemical Society.
Funding
We thank Dr Sergey Vasiliev (IPCP RAS, Chernogolovka) for measuring solid-state NMR spectra, Dr Aleksey Galushko (IOC RAS, Moscow, Russia) for SEM experiments, Dr Rina Takazova and Prof. Anastasia Buyanovskaya (INEOS RAS, Moscow, Russia) for elemental analysis, and Olga Kraevaya (IPCP RAS, Chernogolovka) for measuring the ESR spectrum. We also thank Prof. Valery Traven for his continuous support of this work. This work was financially supported by the Russian Science Foundation (Grant No. 16-13-00111). XPS measurements were supported by the Ministry of Education and Science of Russia (task 3.7270.2017/8.9) and FASO (Theme “Electron” No. AAAA-A18-118020190098-5).
Funders | Funder number |
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Ministry of Education and Science of the Russian Federation | 3.7270.2017/8.9 |
Russian Science Foundation | 16-13-00111 |
Federal Agency for Scientific Organizations | AAAA-A18-118020190098-5 |