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Co‐Co 3 O 4 Embedded in Carbon Nanotube Derived from a Zeolitic‐Imidazolate Framework as Anode Material for Lithium‐Ion Batteries
Author(s) -
Hao Nguyen Thi My,
Ahmed Sheraz,
An JungChul,
Sun HoJung,
Park Gyungse,
Shim Joongpyo
Publication year - 2021
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.12347
Subject(s) - zeolitic imidazolate framework , anode , materials science , carbon nanotube , imidazolate , annealing (glass) , chemical engineering , nanoparticle , lithium (medication) , carbon fibers , nanotechnology , electrode , metal organic framework , composite number , chemistry , composite material , adsorption , organic chemistry , medicine , endocrinology , engineering
Co and carbon nanotube (CNT) were prepared as anode materials to be used in lithium rechargeable batteries from the zeolitic‐imidazolate framework‐67 (ZIF‐67) using the solvothermal method. By annealing ZIF‐67 at different temperatures between 400 and 700 °C, the carbon framework was changed to CNTs, and Co or Co 3 O 4 nanoparticles were embedded in the CNTs (Co or Co 3 O 4 /CNT). The Co/CNT was converted to Co‐Co 3 O 4 /CNT by further treatment at 160 °C in air. The Co 3 O 4 /CNT showed high initial capacities (1582 mAh/g) but poor capacity retention during cycling. However, the air treatment of the Co/CNT at 160 °C enhanced its discharge capacity (935 mAh/g) and capacity retention during cycling.