Electrochemical performance of highly amorphous GeOx powders synthesized in different alcohols for use in Na- and Li-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102109-102115 ◽  
Author(s):  
T. Kajita ◽  
T. Itoh
Keyword(s):  
Particle Size ◽  
Electrochemical Performance ◽  
Large Particle ◽  
Cycle Performance ◽  
Li Ion Batteries ◽  
Large Particle Size ◽  
Amorphous Powders ◽  
Li Ion

The large particle size of amorphous powders deteriorated the cycle performance of a Na-ion cell more than that of a Li-ion cell, due to large decomposition of the electrolyte.

Probing the Effect of High Energy Ball Milling on the Structure and Properties of LiNi1/3Mn1/3Co1/3O2 Cathodes for Li-Ion Batteries

2016 ◽  
Vol 13 (3) ◽  
Author(s):  
Malcolm Stein ◽  
Chien-Fan Chen ◽  
Matthew Mullings ◽  
David Jaime ◽  
Audrey Zaleski ◽  
...  
Keyword(s):  
Particle Size ◽  
Electrochemical Performance ◽  
Crystallite Size ◽  
Ball Milling ◽  
Lithium Ion ◽  
High Energy ◽  
Li Ion Batteries ◽  
Structure And Properties ◽  
Transfer Resistance ◽  
Li Ion

Particle size plays an important role in the electrochemical performance of cathodes for lithium-ion (Li-ion) batteries. High energy planetary ball milling of LiNi1/3Mn1/3Co1/3O2 (NMC) cathode materials was investigated as a route to reduce the particle size and improve the electrochemical performance. The effect of ball milling times, milling speeds, and composition on the structure and properties of NMC cathodes was determined. X-ray diffraction analysis showed that ball milling decreased primary particle (crystallite) size by up to 29%, and the crystallite size was correlated with the milling time and milling speed. Using relatively mild milling conditions that provided an intermediate crystallite size, cathodes with higher capacities, improved rate capabilities, and improved capacity retention were obtained within 14 μm-thick electrode configurations. High milling speeds and long milling times not only resulted in smaller crystallite sizes but also lowered electrochemical performance. Beyond reduction in crystallite size, ball milling was found to increase the interfacial charge transfer resistance, lower the electrical conductivity, and produce aggregates that influenced performance. Computations support that electrolyte diffusivity within the cathode and film thickness play a significant role in the electrode performance. This study shows that cathodes with improved performance are obtained through use of mild ball milling conditions and appropriately designed electrodes that optimize the multiple transport phenomena involved in electrochemical charge storage materials.

Superior electrochemical performance of Li3VO4/N-doped C as an anode for Li-ion batteries

2015 ◽  
Vol 3 (35) ◽  
pp. 17951-17955 ◽  
Author(s):  
Shibing Ni ◽  
Jicheng Zhang ◽  
Jianjun Ma ◽  
Xuelin Yang ◽  
Lulu Zhang
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Specific Capacity ◽  
Cycle Performance ◽  
Li Ion Batteries ◽  
High Specific Capacity ◽  
Li Ion

A high performance Li3VO4/N-doped C anode was successfully prepared, which shows high specific capacity and excellent cycle performance.

Synthesis and Characterization of Li4Ti5O12 Doped by Na and Al as Anodes Material for Li-Ion Batteries

2015 ◽  
Vol 1112 ◽  
pp. 241-244 ◽  
Author(s):  
Slamet Priyono ◽  
Bambang Prihandoko ◽  
Anne Zulfia Syahrial
Keyword(s):  
Particle Size ◽  
Electrochemical Performance ◽  
Li Ion Batteries ◽  
Sem Images ◽  
Uniform Size ◽  
Undoped Material ◽  
Three Phase ◽  
Polyhedral Shape ◽  
Li Ion

Li4Ti5O12 pure and Li4Ti5O12 with Na and Al doped Li(3-x/3)AlxNaTi(5-2x/3)O12 (x=0, 0.025, 0.05, 0.075) as anodes for Li-ion batteries are synthesized at 850°C via solid state reaction using Li2CO3, TiO2-anatase, Al2O3 and Na2CO3 as precursor. The effect of substitution of Al and Na in Li4Ti5O12 on characterization of precursor and electrochemical performance is studied. It is found that Na doped in Li4Ti5O12 pure affected the formation of three phase i.e NaLiTi3O7, Li4Ti5O12, dan Li2TiO3. Meanwhile, Al doped contributed to the formation of NaLiTi3O7 phase significantly. The SEM images show that the particles have polyhedral shape with uniform size distribution. Na doped in the Li4Ti5O12 affected particle size become larger against Al doped particle size become smaller than undoped material, the best particle size measured by PSA is 30,89 . All characterization of material will determine the electrochemical performance of Li-ion battery.

scholarly journals Linking particle size to improved electrochemical performance of SiO anodes for Li-ion batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 2273-2280 ◽  
Author(s):  
Tao Huang ◽  
Yaxiong Yang ◽  
Kaichao Pu ◽  
Jiaxun Zhang ◽  
Mingxia Gao ◽  
...  
Keyword(s):  
Particle Size ◽  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Li Ion Batteries ◽  
Li Ion ◽  
The Relationship

A first attempt to understand the relationship between the particle size and the electrochemical properties of SiO was conducted.

Electrochemical performance of in situ LiFePO4 modified by N-doped graphene for Li-ion batteries

2021 ◽  
Author(s):  
Gui-Yang Luo ◽  
Yi-Jing Gu ◽  
Yuan Liu ◽  
Zi-Liang Chen ◽  
Yong-lin Huo ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Li Ion Batteries ◽  
Doped Graphene ◽  
Li Ion

scholarly journals In situ surface-enhanced Raman spectroelectrochemistry reveals the molecular conformation of electrolyte additives in Li-ion batteries

2021 ◽  
Author(s):  
Chenbo Zhu ◽  
Chenghao Fan ◽  
Emiliano Cortes ◽  
Wei Xie
Keyword(s):  
Molecular Conformation ◽  
Rate Capability ◽  
Cycle Performance ◽  
Li Ion Batteries ◽  
Electrolyte Additive ◽  
Electrolyte Additives ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Li Ion

We report on the mechanism of rhodamine B (RhB) acting as an electrolyte additive in Li/graphite cells. We show that cycle performance and rate capability of graphite is enhanced in...

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