Preparation and electrochemical performance of PTAm-GO cathode material for lithium ion battery

Poly(4-acrylamido-2,2,6,6-tetramethylpiperidine-1-oxyl)-graphene oxide (PTAm-GO) composite material was prepared by atom transfer radical polymerization method and characterized by FTIR, 1HNMR, EPR, TGA and SEM. Then, PTAm-GO composite material was used as a cathode material for lithium-ion battery to assemble half batteries for testing. The results showed that the composite material was chemical graft between GO and nitroxide radical polymer PTAm. PTAm-GO had better lithium storage capacity and electrochemical performance than pure PTAm, at a current density of 200 mA/g, the specific discharge capacity of PTAm-GO and pure PTAm electrodes were 138 and 39 mA•h/g after 300 cycles of charge and discharge. The charge transfer resistance of PTAm-GO and pure PTAm electrodes were 96 and 179 Ω, respectivel. As a result, PTAm-GO could be used as a very promising active material for lithium-ion battery. © 2021, Editorial Office of FINE CHEMICALS. All right reserved.