Self-supporting dual-confined porous Si@c-ZIF@carbon nanofibers for high-performance lithium-ion batteries

Abstract

Dual-confined porous Si@c-ZIF@carbon nanofibers (Si@c-ZIF@CNFs) are fabricated, possessing excellent antioxidant capacity, high surface area and abundant pores, which availably enhance conductivity, relieve volume expansion and facilitate electrolyte penetration during cycling....

Engineering Si-Based Anode Materials with Homogeneous Distribution of SiOx and Carbon for Lithium-Ion Batteries

“…Accordingly, it indicates a mixed Li + storage process on the SCVR anode rather than the conventional Li + diffusion-controlled behavior on SiO x -based electrodes, thus resulting in a fast Li + transport kinetics . Furthermore, the percentage of pseudocapacitive-controlled contribution and diffusion-controlled contribution can be calculated based on the equations where k 1 v and k 2 v 1/2 represent the pseudocapacitive-controlled fraction and diffusion-controlled fraction, respectively. k 1 and k 2 can be obtained using eq .…”

Growing Co–Ni–Se nanosheets on 3D carbon frameworks as advanced dual functional electrodes for supercapacitors and sodium ion batteries

“…6b). Based on the literature, 39 the scan rate (v) and peak current (i) can be fitted in the equations as follows:…”

“…6b). Based on the literature, 39 the scan rate ( v ) and peak current ( i ) can be fitted in the equations as follows: i = av b log( i ) = b log( v ) + log( a )where a and b are the parameters to be determined. The b values of 0.5 and 1.0 reflect ionic diffusion and capacitive control process.…”

Influence of Beta-Cyclodextrin Functionalized Tin Phenylphosphonate on the Thermal Stability and Flame Retardancy of Epoxy Composites

“…The first stage is occurred before 270°C. The mass loss is 6.6 wt% and 5.9 wt%, respectively, which is mainly attributed to the crystal water in the molecular structure of SnPP and β-CD@SnPP, the adsorbed water on the surface and some volatile components [34]. Subsequently, the obvious weight losses between 270°C and 640°C in the second stage are 25.3 wt% and 24.7 wt%, respectively, which can be explained that SnPP is decomposed to Sn compounds, phosphorous compounds and organic small molecules, and beta-cyclodextrin is pyrolyzed into carbon.…”