Boosting lithium rocking-chair engineering from the villus cavity and Ni catalytic center of a silicon–carbon anode for high-performance lithium-ion batteries

Abstract

Generally, the dynamic silicon nanoparticles (Si NPs) cores and static carbon shells of silicon-carbon anode materials mismatch all through lithiation and de-lithiation of high-capacity Li-ion batteries (LIBs). Herein, we used...

Carbon Nanofiber Cages and Interface Engineering Stabilizing Silicon-Based Anode for High-Performance Lithium-Ion Batteries

“…These peaks at 99.98, 100.98, 101.98, 103.18, 103.98, and 104.68 eV correspond to Si 2p 3/2 , Si 2p 1/2 , Si + , Si 2+ , Si 3+ and Si 4+ , respectively. 35,36 In Figure 5e, the C 1s spectrum is decomposed into three peaks, corresponding to C−C (284.8 eV), C−O (285.26 eV), and C−O−Si (288.32 eV) bonds. 37 As can be seen from Figure 5f, two peaks at 855.26 and 872.61 eV are attributed to Ni 2p 3/2 and Ni 2p 1/2 , the other two peaks at 861.61 and 879.14 eV represent satellite peaks.…”

Enhanced electrochemical performances based on ZnSnO3 microcubes functionalized in-doped carbon nanofibers as free-standing anode materials

“…S5a† displays typical type-IV isotherms with a distinct hysteresis loop corresponding to the pore structure. 37,38 The BET specific surface areas of ZSO@CNFM-1, ZSO@CNFM-2 and ZSO@CNFM-3 are 14.9, 20.4 and 25.3 m 2 g −1 , respectively, corresponding to total pore volumes of 3.4, 4.2 and 5.8 cm 3 g −1 . Meanwhile, the pore size distributions of the samples were calculated using the desorption isotherm following the Barrett–Joyner–Halenda (BJH) method.…”

Carbon-coated silicon/graphite oxide composites as anode materials for highly stable lithium-ion batteries

“…[13][14][15][16][17] Therefore, these factors lead to severe capacity degradation of Si during cycling, thus hindering its application as an anode material for LIBs. 18,19 To overcome the insufficiency of Si materials, many strategies have been studied. Novel Si nanostructures has been designed, for example, by reducing the size of Si NPs to tens or even several nanometers, 20 and constructing different morphologies including nanotubes, 21 nanowires, 22 yolk-shell structures, 23,24 and porous Si.…”

“…13–17 Therefore, these factors lead to severe capacity degradation of Si during cycling, thus hindering its application as an anode material for LIBs. 18,19…”