A novel core-shell structured poly-m-phenyleneisophthalamide@polyvinylidene fluoride nanofiber membrane for lithium ion batteries with high-safety and stable electrochemical performance

2019 ◽  
Vol 300 ◽  
pp. 263-273 ◽  
Author(s):  
Liyuan Wang ◽  
Nanping Deng ◽  
Jingge Ju ◽  
Gang Wang ◽  
Bowen Cheng ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Polyvinylidene Fluoride ◽  
Lithium Ion ◽  
Core Shell ◽  
Nanofiber Membrane

scholarly journals The Synthesis and Electrochemical Performance of Si Composite with Hollow Carbon Microtubes by the Carbonization of Milkweed from Nature as Anode Template for Lithium Ion Batteries

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5124
Author(s):  
Eun Hyuk Chung ◽  
Jong Pil Kim ◽  
Hyun Gyu Kim ◽  
Jae-Min Chung ◽  
Sei-Jin Lee ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Electrical Conductivity ◽  
Electrochemical Performance ◽  
Pore Size ◽  
Lithium Ion Batteries ◽  
Polyvinylidene Fluoride ◽  
Lithium Ion ◽  
Size Analysis ◽  
Pore Size Analysis ◽  
Hollow Carbon

It has been reported that improving electrical conductivity and maintaining stable structure during discharge/charge process are challenge for Si to be used as an anode for lithium ion batteries (LIB). To address this problem, milkweed (MW) was carbonized to prepare hollow carbon microtubes (HCMT) derived from biomass as an anode template for LIB. In order to improve electrical conductivity, various materials such as chitosan (CTS), agarose, and polyvinylidene fluoride (PVDF) are used as carbon source (C1, C2, and C3) by carbonization. Carbon coated HCMT@Si composits, HCMT@Si@C1, HCMT@Si@C1@C2, and HCMT@Si@C1@C3, have been successfully synthesized. Changes in structure and crystallinity of HCMT@Si composites were characterized by using X-ray diffraction (XRD). Specific surface area for samples was calculated by using BET (Brunauer–Emmett–Teller). Also, pore size and particle size were obtained by particle and pore size analysis system. The surface morphology was evaluated using high resolution scanning electron microscopy (HR-SEM), Field Emission transmission electron microscopy (TEM). The thermal properties of HCMT@Si composites were analyzed by thermogravimetric analysis (TGA). Our research was performed to study the synthesis and electrochemical performance of Si composite with HCMT by the carbonization of natural micro hollow milkweed to form an inner space. After carbonization at 900 °C for 2 h in N2 flow, inner diameter of HCMT obtained was about 10 μm. The electrochemical tests indicate that HCMT@Si@C1@C3 exhibits discharge capacity of 932.18 mAh/g at 0.5 A/g after 100 cycles.

Core-Shell NiFe2O4@TiO2Nanorods: An Anode Material with Enhanced Electrochemical Performance for Lithium-Ion Batteries

2014 ◽  
Vol 20 (35) ◽  
pp. 11214-11219 ◽  
Author(s):  
Gang Huang ◽  
Feifei Zhang ◽  
Xinchuan Du ◽  
Jianwei Wang ◽  
Dongming Yin ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Core Shell ◽  
Enhanced Electrochemical Performance

Cu3Si@Si core–shell nanoparticles synthesized using a solid-state reaction and their performance as anode materials for lithium ion batteries

Nanoscale ◽  
2015 ◽  
Vol 7 (37) ◽  
pp. 15075-15079 ◽  
Author(s):  
Jianbin Zhou ◽  
Ning Lin ◽  
Ying Han ◽  
Jie Zhou ◽  
Yongchun Zhu ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Solid State Reaction ◽  
Anode Materials ◽  
Lithium Ion ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

Cu3Si@Si core–shell nanoparticles are synthesized by a solid-state reaction and exhibit high electrochemical performance.

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