scholarly journals Preparation of Porous MnO@C Core-Shell Nanowires as Anodes for Lithium-Ion Batteries

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Shouhui Chen ◽  
Yaqin Chen ◽  
Rihui Zhou ◽  
Jiafeng Wu ◽  
Yonggui Song ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Surface Area ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Bet Surface Area ◽  
Core Shell ◽  
Electrochemical Performances ◽  
Phase Purity ◽  
Shell Nanowires

Porous MnO@C core-shell nanowires were prepared via a simple and facile method. The morphologies, the phase purity, the mass contents, and the BET surface area of the composite were characterized by SEM, XRD, TGA, and N2adsorption test, respectively. When the composite served as an anode for lithium-ion batteries, it showed superior electrochemical performances. The MnO@C composite presented a reversible capacity of 448.1 mAh g−1after 100 cycles at the current rate of 200 mA g−1.

Facile fabrication of SnO2@TiO2 core–shell structures as anode materials for lithium-ion batteries

2016 ◽  
Vol 4 (33) ◽  
pp. 12850-12857 ◽  
Author(s):  
Zheng Yi ◽  
Qigang Han ◽  
Ping Zan ◽  
Yong Cheng ◽  
Yaoming Wu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Anode Materials ◽  
Lithium Ion ◽  
Shell Structures ◽  
Core Shell ◽  
Electrochemical Performances ◽  
Facile Fabrication ◽  
Novel Strategy

A novel strategy to fabricate SnO2@TiO2 composite is developed. As an anode material, the obtained composite exhibits enhanced electrochemical performances.

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.

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.

NiSb alloy hollow nanospheres as anode materials for rechargeable lithium ion batteries

2014 ◽  
Vol 50 (60) ◽  
pp. 8201-8203 ◽  
Author(s):  
Hongshuai Hou ◽  
Xiaoyu Cao ◽  
Yingchang Yang ◽  
Laibing Fang ◽  
Chengchi Pan ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Galvanic Replacement ◽  
Electrochemical Performances ◽  
Hollow Nanospheres ◽  
High Reversible Capacity

NiSb alloy hollow nanospheres (HNSs) obtained by galvanic replacement were firstly applied as anode materials for lithium ion batteries, giving the best electrochemical performances for NiSb alloy materials so far with a high reversible capacity of 420 mA h g−1 after 50 cycles, close to its theoretical capacity (446 mA h g−1).

Facile fabrication of MnO/C core–shell nanowires as an advanced anode material for lithium-ion batteries

2015 ◽  
Vol 180 ◽  
pp. 990-997 ◽  
Author(s):  
Cunbao Zhang ◽  
Jian-Gan Wang ◽  
Dandan Jin ◽  
Keyu Xie ◽  
Bingqing Wei
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Core Shell ◽  
Facile Fabrication ◽  
Shell Nanowires
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