A Manganese-Based Coordination Polymer Containing No Solvent as a High Performance Anode in Li-Ion Batteries

Abstract

The finding of new coordination polymers with high anodic performance and the insight into their electrochemical mechanism is of considerable importance to advance their application in lithium-ion batteries (LIBs). Herein, [Mn(tfbdc)-(Im) 4 ] (Mn-TBI), a one-dimensional (1D) coordination polymer, has been constructed from Mn(Ac) 2 , imdazole (Im), and tetrafluoroterephthalic acid (H 2 tfbdc). When tested as an anode material of LIBs, Mn-TBI delivers a high capacity of 525 mAh g −1 with a Coulombic efficiency of 95% after 150 cycles at 50 mA g −1 . Even at 1 A g −1 , Mn-TBI remains, with a capacity of 209 mAh g −1 . The studies of ex situ X-ray photoelectron spectroscopy and FT-IR spectra for the Mn-TBI electrode under different states reveal that the ligands and Mn(II) ions may all participate in the electrochemical reaction of the charging/discharging process. It is a practical route to discover new anode materials for LIBs from 1D coordination polymers.

A Copper-Based Polycarbonyl Coordination Polymer as a Cathode for Li Ion Batteries

“…This increasing of the difference value might be attributed to the formation of Cu(I) ions in the discharge process. 39,61 From Figure 8c, it can be observed that the two binding energies are 954.59 and 934.96 eV, respectively, moving to the original values (955.42 and 935.75 eV). This change means that, after the Cu-CP electrode was charged at 4.5 V, some Cu(I) ions have been turned to Cu(II) ions.…”

“…This change means that, after the Cu-CP electrode was charged at 4.5 V, some Cu(I) ions have been turned to Cu(II) ions. 27,39 Figure S7 displays the magnetic susceptibility data of the pristine and the discharged Cu-CP electrodes. It can be found from the figure that the magnetic susceptibility value (χ 298 K ) of the pristine Cu-CP electrode materials is 3.030 × 10 −6 emu g −1 , while after the electrode material was first discharged to 1.5 V, χ 298 K of it is a negative value (−3.321 × 10 −6 emu g −1 ), meaning diamagnetic Cu(I) ions were produced; 62 that is to say, Cu(II) ions were reduced to Cu(I) ions after the discharge.…”

Investigation of performance of cobalt oxide (CoO) and titanium dioxide (TiO2) attached to carbon nanotube (6, 0) as electrode of metal‐ion batteries: A theoretical study

“…[31][32][33][34][35] In this study, in order to estimate the real environment the effects of water (dielectric constant is 78.54) as polar solvent on V cell are calculated by conductor-like screening model (COSMO). [36][37][38][39][40][41][42] The free Gibbs energy (G) values of CNT and their complexes with metal oxides are calculated by using of geometry optimization and computation of harmonic vibrational frequencies at room temperature…”

High Efficiency Electrochemiluminescence for Copper(II) and Cadmium(II) Pyrazolate Polymers

“…Coordination polymers(CPs) have attracted intense interest for their structural diversity and potential applications in many areas, such as gas adsorption/separation [1][2][3], catalysis [4], luminescence sensing [5,6], battery [7][8][9], supercapacitor [10,11], and magnetism [12,13]. The design and selection of organic ligands and metal ions are critical factors for the construction of CPs, due to the coordination mode of organic ligands and functional groups in them are directly affect the configuration and applications of the CPs.…”