Metal Sulfide/Carbon Composite Fibers as Anode Materials for Lithium Ion Batteries

2018 ◽  
Vol 85 (13) ◽  
pp. 275-284 ◽  
Author(s):  
Jorge Lopez ◽  
Jahaziel Villarreal ◽  
Jesus Cantu ◽  
Jason Parsons ◽  
Mataz Alcoutlabi
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Metal Sulfide ◽  
Lithium Ion ◽  
Carbon Composite ◽  
Composite Fibers

High performance silicon carbon composite anode materials for lithium ion batteries

2009 ◽  
Vol 189 (1) ◽  
pp. 16-21 ◽  
Author(s):  
Zhaojun Luo ◽  
Dongdong Fan ◽  
Xianlong Liu ◽  
Huanyu Mao ◽  
Caifang Yao ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Carbon Composite ◽  
Composite Anode ◽  
Silicon Carbon

scholarly journals Centrifugally Spun α-Fe2O3/TiO2/Carbon Composite Fibers as Anode Materials for Lithium-Ion Batteries

2019 ◽  
Vol 9 (19) ◽  
pp. 4032 ◽  
Author(s):  
Luis Zuniga ◽  
Gabriel Gonzalez ◽  
Roberto Orrostieta Chavez ◽  
Jason C. Myers ◽  
Timothy P. Lodge ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Composite Fiber ◽  
Carbon Composite ◽  
Composite Fibers ◽  
X Ray ◽  
Binder Free

We report results on the electrochemical performance of flexible and binder-free α-Fe2O3/TiO2/carbon composite fiber anodes for lithium-ion batteries (LIBs). The composite fibers were produced via centrifugal spinning and subsequent thermal processing. The fibers were prepared from a precursor solution containing PVP/iron (III) acetylacetonate/titanium (IV) butoxide/ethanol/acetic acid followed by oxidation at 200 °C in air and then carbonization at 550 °C under flowing argon. The morphology and structure of the composite fibers were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). These ternary composite fiber anodes showed an improved electrochemical performance compared to the pristine TiO2/C and α-Fe2O3/C composite fiber electrodes. The α-Fe2O3/TiO2/C composite fibers also showed a superior cycling performance with a specific capacity of 340 mAh g−1 after 100 cycles at a current density of 100 mA g−1, compared to 61 mAh g−1 and 121 mAh g−1 for TiO2/C and α-Fe2O3/C composite electrodes, respectively. The improved electrochemical performance and the simple processing of these metal oxide/carbon composite fibers make them promising candidates for the next generation and cost-effective flexible binder-free anodes for LIBs.

Nanoscale Electrical Degradation of Silicon–Carbon Composite Anode Materials for Lithium-Ion Batteries

2018 ◽  
Vol 10 (29) ◽  
pp. 24549-24553 ◽  
Author(s):  
Seong Heon Kim ◽  
Yong Su Kim ◽  
Woon Joong Baek ◽  
Sung Heo ◽  
Dong-Jin Yun ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Carbon Composite ◽  
Composite Anode ◽  
Electrical Degradation ◽  
Silicon Carbon

Yolk-shell Si/SiOx@Void@C composites as anode materials for lithium-ion batteries

2019 ◽  
Vol 12 (01) ◽  
pp. 1850094 ◽  
Author(s):  
Yue Lu ◽  
Peng Chang ◽  
Libin Wang ◽  
Joseph Nzabahimana ◽  
Xianluo Hu
Keyword(s):  
Electrical Conductivity ◽  
Lithium Ion Batteries ◽  
Shell Structure ◽  
Anode Materials ◽  
Lithium Ion ◽  
Carbon Composite ◽  
Cycling Stability ◽  
Carbon Shell ◽  
Buffer Effect ◽  
Practical Applications

Silicon (Si) has been considered as one of the most promising anode materials in lithium-ion battery. However, practical applications of Si are hindered by undesirable cycling stability resulting from poor electrical conductivity and huge volumetric change during cycling process. Here, we prepared a yolk-shell silicon/carbon composite by etching carbon-coated heat-treated silicon monoxide (SiO) precursor. The as-prepared Si/SiOx@Void@C composite of inner silicon/silicon oxides and outer carbon shell with voids between them (Si/SiOx@Void@C), shows impressive cycling stability (1020[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 1[Formula: see text]A[Formula: see text]g[Formula: see text] over 200 cycles) and excellent rate performance (775[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 6[Formula: see text]A[Formula: see text]g[Formula: see text]). The remarkable electrochemical performance is due to the enhanced electrical conductivity originated from the carbon shell and the volume buffer effect of the yolk-shell structure. A combination of the yolk-shell structure with Si/C composites is believed to be a promising way to improve the performance of Si-based materials in lithium-ion batteries.

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