scholarly journals Coaxial Electrospinning Construction Si@C Core–Shell Nanofibers for Advanced Flexible Lithium-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3454
Author(s):  
Li Zeng ◽  
Hongxue Xi ◽  
Xingang Liu ◽  
Chuhong Zhang
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
High Energy ◽  
Coaxial Electrospinning ◽  
Core Shell ◽  
Electrospinning Technique ◽  
Silicon Carbon ◽  
Capacity Degradation ◽  
Hierarchical Porous

Silicon (Si) is expected to be a high-energy anode for the next generation of lithium-ion batteries (LIBs). However, the large volume change along with the severe capacity degradation during the cycling process is still a barrier for its practical application. Herein, we successfully construct flexible silicon/carbon nanofibers with a core–shell structure via a facile coaxial electrospinning technique. The resultant Si@C nanofibers (Si@C NFs) are composed of a hard carbon shell and the Si-embedded amorphous carbon core framework demonstrates an initial reversible capacity of 1162.8 mAh g−1 at 0.1 A g−1 with a retained capacity of 762.0 mAh g−1 after 100 cycles. In addition, flexible LIBs assembled with Si@C NFs were hardly impacted under an extreme bending state, illustrating excellent electrochemical performance. The impressive performances are attributed to the high electric conductivity and structural stability of the porous carbon fibers with a hierarchical porous structure, indicating that the novel Si@C NFs fabricated using this electrospinning technique have great potential for advanced flexible energy storage.

Electrospun core–shell silicon/carbon fibers with an internal honeycomb-like conductive carbon framework as an anode for lithium ion batteries

2015 ◽  
Vol 3 (13) ◽  
pp. 7112-7120 ◽  
Author(s):  
Haoran Zhang ◽  
Xianying Qin ◽  
Junxiong Wu ◽  
Yan-Bing He ◽  
Hongda Du ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Carbon Fibers ◽  
Lithium Ion ◽  
Coaxial Electrospinning ◽  
Core Shell ◽  
Electrospinning Technique ◽  
C Fibers ◽  
Silicon Carbon ◽  
Carbon Framework

Core–shell silicon/carbon (Si/C) fibers with an internal honeycomb-like carbon framework are prepared based on the coaxial electrospinning technique.

Core-shell amorphous silicon-carbon nanoparticles for high performance anodes in lithium ion batteries

2016 ◽  
Vol 328 ◽  
pp. 527-535 ◽  
Author(s):  
Julien Sourice ◽  
Arnaud Bordes ◽  
Adrien Boulineau ◽  
John P. Alper ◽  
Sylvain Franger ◽  
...  
Keyword(s):  
Amorphous Silicon ◽  
Lithium Ion Batteries ◽  
Carbon Nanoparticles ◽  
High Performance ◽  
Lithium Ion ◽  
Core Shell ◽  
Silicon Carbon

High-Energy Density Core–Shell Structured Li[Ni0.95Co0.025Mn0.025]O2 Cathode for Lithium-Ion Batteries

2017 ◽  
Vol 29 (12) ◽  
pp. 5048-5052 ◽  
Author(s):  
Do-Wook Jun ◽  
Chong S. Yoon ◽  
Un-Hyuck Kim ◽  
Yang-Kook Sun
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell

Core-shell structured Li[(Ni0.9Co0.05Al0.05)0.6(Ni0.4Co0.2Mn0.4)0.4]O2 cathode material for high-energy lithium ion batteries

Ionics ◽  
2017 ◽  
Vol 24 (5) ◽  
pp. 1293-1304 ◽  
Author(s):  
Chaopu Tan ◽  
Hongjun Luo ◽  
Ke Du ◽  
Dianhua Huang ◽  
Kaihua Hu ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
Core Shell

scholarly journals Electrospun Core-Shell Nanofiber as Separator for Lithium-Ion Batteries with High Performance and Improved Safety

2019 ◽  
Author(s):  
Yun Zhao ◽  
Yanxi Li ◽  
Zheng Liang
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Vinylidene Fluoride ◽  
Short Circuit ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Liquid Electrolyte ◽  
Core Shell ◽  
Fiber Network ◽  
Safety Issues

Though the energy density of lithium-ion batteries continues to increase, safety issues related with the internal short-circuit and the resulting combustion of highly flammable electrolyte impede the further development of lithium-ion batteries. It has been well-accepted that a thermal stable separator is important to postpone the entire battery short-circuit and thermal-runaway. Traditional methods to improve the thermal stability of separators includes surface modification and/or developing alternate material systems for separators which may always affect the battery performance negatively. Herein, a thermostable and shrink-free separator with little compromise in battery performance is prepared by coaxial electrospinning and tested. The separator consists of core-shell fiber networks where poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) layer serves as shell and polyacrylonitrile (PAN) as the core. This core-shell fiber network exhibits little or even no shrinking/melting at elevated temperature over 250 °C. Meanwhile, it shows excellent electrolyte wettability and can take large amount of liquid electrolyte three times more than that of conventional Celgard 2400 separator. In addition, the half-cell using LiNi1/3Co1/3Mn1/3O2 as cathode and the aforementioned electrospun core-shell fiber network as separator demonstrates superior electrochemical behavior, stably cycling for 200 cycles at 1 C with a reversible capacity of 130 mAh g-1 and little capacity decay.

A cross-like hierarchical porous lithium-rich layered oxide with (110)-oriented crystal planes as a high energy density cathode for lithium ion batteries

2019 ◽  
Vol 7 (21) ◽  
pp. 13120-13129 ◽  
Author(s):  
Min Chen ◽  
Xiaojing Jin ◽  
Zhi Chen ◽  
Yaotang Zhong ◽  
Youhao Liao ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Oriented Crystal ◽  
Layered Oxide ◽  
Hierarchical Porous ◽  
Implantation Method

Cross-like hierarchical porous Li1.167Mn0.583Ni0.250O2 with (110)-oriented crystal planes (CHP-LMNO) is successfully developed by a morphology-conserved solid-state Li implantation method.

Coaxial carbon nanofiber/NiO core–shell nanocables as anodes for lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (30) ◽  
pp. 23548-23555 ◽  
Author(s):  
Seok-Hwan Park ◽  
Wan-Jin Lee
Keyword(s):  
Lithium Ion Batteries ◽  
Electrophoretic Deposition ◽  
Carbon Nanofiber ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Core Shell ◽  
High Reversible Capacity ◽  
Charge Discharge

The CNF/NiO core–shell nanocables are prepared by electrospinning and electrophoretic deposition. The CNF/NiO nanocables deliver a high reversible capacity of 825 mA h g−1 at 200 mA g−1 after 50 charge–discharge cycles without showing obvious decay.

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