Graphene analogue metal organic framework with superior capacity and rate capability as an anode for lithium ion batteries
By Nazir, Aqsa; Le, Hang T. T.; Nguyen, An-Giang; Park, Chan-Jin
Published in Electrochimica Acta
2021
Abstract
Metal–organic frameworks (MOFs), are enormously versatile materials, have vast potential in electrochemical energy storage systems (ESS) owing to their extraordinary surface area, high electronic conductivity, and suitable porosity. Herein, we synthesize porous, 2D graphene analogue conductive metal–organic framework, Ni3(2,3,6,7,10,11-hexaaminotriphenylene)2 (designed as Ni-MOF) nanofilaments (NFs), and utilise it as a competitive active lithium-ion battery (LIB) anode material for the first time. The Ni-MOF NF electrode supply extraordinarily high reversible capacities of 1,079, 917, 790, and 626 mAh g−1 at specific currents of 0.1, 1, 2, and 5 A g−1, correspondingly. After cycling at diverse specific currents varying from 0.1 to 50 A g−1 for ten cycles each and afterward up to 150 cycles at 0.1 A g−1, the Ni-MOF NF anode supply a capacity of 845 mAh g−1. The full cell of 2D Ni-MOF NFs anode couple with nickel cobalt manganese oxide (NCM622) cathode provide a large energy density of 423 W h kg−1 with highly stable cyclic behaviour. The full cell attained a 431 mAh g−1 of capacity even after 200 cycles at a high specific current of 1 A g−1. These outstanding performances demonstrate the high application potential of 2D Ni-MOF NFs as a next-generation LIB anode.