Anion-mediated regulation of open metal sites in metal-organic framework materials or high-performance solid-state
Pucheng Zhao1, Yanyan Xu1, Mingjie Liu1
1School of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, P. R. China. shixy222@gdut.edu.cn.
Abstract:
In this study, a Cu-MOF was successfully synthesized, and the coordination behavior between its open metal sites (OMSs) and various anions was systematically investigated. It was determined that the NO3- anion exhibits the most effective coordination with the Cu2+ sites. This optimal interaction endows the resulting LiNO3@Cu-MOF with superior electrochemical properties: an ionic conductivity of 1.19 × 10-3 S cm-1, a lithium-ion transference number of 0.69, and stable lithium plating/stripping for 1600 hours at 0.2 mA cm-2. This work elucidates the profound role of OMSs in regulating anion coordination and provides a novel design strategy for high-performance, MOF-based solid-state electrolytes.
Related Concept Videos
Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
Complexation Equilibria: Factors Influencing Stability of Complexes
Formation of Complex Ions
Complexation Equilibria: The Chelate Effect
Valence Bond Theory


