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Strategies to Optimize the Lithium Storage Capability of the Metal‐Organic Framework Copper‐1,3,5‐Trimesic Acid (Cu‐BTC)
Author(s) -
Hu Pinfei,
Yuan Aihua,
Meng Chunfeng,
Chen Hantao,
Zhou Hu
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202001017
Subject(s) - trimesic acid , electrochemistry , materials science , lithium (medication) , metal organic framework , carboxymethyl cellulose , copper , electrode , chemical engineering , inorganic chemistry , chemistry , organic chemistry , adsorption , molecule , metallurgy , sodium , medicine , engineering , endocrinology
Metal‐organic frameworks (MOFs) have recently been considered as potential electrodes for lithium‐ion batteries. However, there are only a few reports of pristine MOFs as high‐performance electrode materials; whereas, in other cases, their overall specific capacities and cycle stabilities are insufficient. In this work, Cu‐BTC (BTC=1,3,5‐trimesic acid) is taken as an example to systematically explore the effects of polymer binder, activation temperature, and synthesis method on the electrochemical properties of MOFs. Through the optimization of these conditions, the electrochemical properties of Cu‐BTC can be significantly improved. With carboxymethyl cellulose (CMC) as the binder, the activated Cu‐BTC (synthesized with the pre‐cooling method) displays a stable specific capacity of 626.4 mAh g −1 after 100 cycles of charge and discharge at a current density of 100 mA g −1 . Besides, the mechanism study shows that both the copper species and organic ligands of Cu‐BTC take part in the redox chemistry contributing to the lithium storage capability.