Hierarchically‐Porous Carbon Derived from a Large‐Scale Iron‐based Organometallic Complex for Versatile Energy Storage

Abstract

Inspired by the preparation of the hierarchically-porous carbon (HPC) derived from metal organic frameworks (MOFs) for energy storage, in this work, a simple iron-based metal- organic complex (MOC), which was simpler and cheaper compared with the MOF, was selected to achieve versatile energy storage. The intertwined 1 D nanospindles and enriched-oxygen doping of the HPC was obtained after one-step carbonization of the MOC. When employed in lithium-ion batteries, the HPC exhibited reversible capacity of 778 mA h g(-1) after 60 cycles at 50 mA g(-1) . Moreover, the HPC maintained a capacity of 188 mA h g(-1) after 400 cycles at 100 mA g(-1) as the anode material in a sodium-ion battery. In addition, the HPC served as the cathode matrix for evaluation of a lithium-sulfur battery. The general preparation process of the HPC is commercial, which is responsible for the large-scale production for its practical application.

Impact of functional groups on cellulose nanofibers on the state of water molecules, photocatalytic water splitting, and photothermal water evaporation

“…The behavior of separating, transferring, and recombining photo-generated charge carriers (electrons and holes) was systematically investigated using a combination of TPR, EIS, and PL techniques. 44 To assess the recombination of photo-generated charge carriers, PL spectra of the lamellar membranes were obtained under 375 nm excitation. As shown in Fig.…”

From dendritic mesoporous silica microspheres to waxberry-like hierarchical hollow carbon spheres: rational design of carbon host for lithium sulfur batteries

“…Figure 4(a) shows two typical characteristic Raman peaks for both samples at about 1347 cm −1 (D band) and 1594 cm −1 (G band). The G band is generally assigned to the Raman active E 2g mode for the graphitic carbon, while the D band is generally assigned to A 1g mode for amorphous carbon [31,32]. The intensity ratio of the D to G band (I D /I G ) is usually regarded as criteria to judge the degree of graphitization for carbon materials.…”

Metal Organic Framework Derived Materials: Progress and Prospects for the Energy Conversion and Storage

“… In most of the cases, porous carbon showed better Na + storage compared to graphite. [61d] The main drawbacks of sodium‐ion storage are slow diffusion kinetics associated with Na + in the host material due to larger ionic radius compared to Li + and the low capacity . Therefore, electrode materials for sodium ion batteries are rare, especially as the anode materials.…”