Hollow-structure engineering of a silicon–carbon anode for ultra-stable lithium-ion batteries

2020 ◽  
Vol 49 (17) ◽  
pp. 5669-5676 ◽  
Author(s):  
Hongbin Liu ◽  
Yun Chen ◽  
Bo Jiang ◽  
Yue Zhao ◽  
Xiaolin Guo ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Hollow Structure ◽  
Lithium Ion ◽  
Carbon Anode ◽  
Carbon Substrate ◽  
Silicon Nanotubes ◽  
Silicon Carbon ◽  
Stable Performance ◽  
Structure Engineering

Hollow silicon nanotubes were successfully synthesized in situ on a carbon substrate, which effectively accommodate the volume expansion of silicon and exhibit ultra-stable performance as the anode of lithium-ion batteries.

scholarly journals Solutions for the problems of silicon–carbon anode materials for lithium-ion batteries

2018 ◽  
Vol 5 (6) ◽  
pp. 172370 ◽  
Author(s):  
Xuyan Liu ◽  
Xinjie Zhu ◽  
Deng Pan
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Carbon Anode ◽  
Environmental Friendliness ◽  
Silicon Carbon ◽  
New Energy ◽  
Carbon Anodes

Lithium-ion batteries are widely used in various industries, such as portable electronic devices, mobile phones, new energy car batteries, etc., and show great potential for more demanding applications like electric vehicles. Among advanced anode materials applied to lithium-ion batteries, silicon–carbon anodes have been explored extensively due to their high capacity, good operation potential, environmental friendliness and high abundance. Silicon–carbon anodes have demonstrated great potential as an anode material for lithium-ion batteries because they have perfectly improved the problems that existed in silicon anodes, such as the particle pulverization, shedding and failures of electrochemical performance during lithiation and delithiation. However, there are still some problems, such as low first discharge efficiency, poor conductivity and poor cycling performance, which need to be improved. This paper mainly presents some methods for solving the existing problems of silicon–carbon anode materials through different perspectives.

scholarly journals ZnO quantum dots anchored in multilayered and flexible amorphous carbon sheets for high performance and stable lithium ion batteries

2019 ◽  
Vol 7 (14) ◽  
pp. 8460-8471 ◽  
Author(s):  
Joseph F. S. Fernando ◽  
Chao Zhang ◽  
Konstantin L. Firestein ◽  
Jawahar Y. Nerkar ◽  
Dmitri V. Golberg
Keyword(s):  
Quantum Dots ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Amorphous Carbon ◽  
High Performance ◽  
Lithium Ion ◽  
Carbon Anode ◽  
Zno Quantum Dots

The role of the carbonaceous component in the excellent (de)lithiation properties of a ZnO/carbon anode material, as revealed by in situ TEM.

scholarly journals An Ab Initio Study of Lithization of Two-Dimensional Silicon–Carbon Anode Material for Lithium-Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6649
Author(s):  
Alexander Galashev ◽  
Alexey Vorob'ev
Keyword(s):  
First Principles ◽  
Lithium Ion ◽  
Carbon Anode ◽  
Carbon Substrate ◽  
Ab Initio Study ◽  
Free Standing ◽  
Layer Graphene ◽  
Silicon Carbon ◽  
The Stability ◽  
Conductive Properties

This work is devoted to a first-principles study of changes in the structural, energetic, and electronic properties of silicene anodes during their lithium filling. Anodes were presented by silicene on carbon substrate and free-standing silicene. The ratio of the amount of lithium to silicon varied in the range from 0.06 to 1.125 for silicene on bilayer graphene and from 0.06 to 2.375 for free-standing silicene. It is shown that the carbon substrate reduces the stability of the silicene sheet. Silicene begins to degrade when the ratio of lithium to silicon (NLi/NSi) exceeds ~0.87, and at NLi/NSi = 0.938, lithium penetrates into the space between the silicene sheet and the carbon substrate. At certain values of the Li/Si ratio in the silicene sheet, five- and seven-membered rings of Si atoms can be formed on the carbon substrate. The presence of two-layer graphene imparts conductive properties to the anode. These properties can periodically disappear during the adsorption of lithium in the absence of a carbon substrate. Free-standing silicene adsorbed by lithium loses its stability at NLi/NSi = 1.375.

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