Study of Circulation of Reaction Liquid in Liquid Phase Synthesis of LiFePO4 as Cathode Material

2015 ◽  
Vol 1120-1121 ◽  
pp. 128-131
Author(s):  
Jun Jun Ma ◽  
Jia Zhou ◽  
Xue Min Zu ◽  
Xing Yao Wang
Keyword(s):  
Liquid Phase ◽  
Cathode Material ◽  
Raw Materials ◽  
Lithium Ion ◽  
Phase Method ◽  
Capacity Retention ◽  
Phase Synthesis ◽  
Initial Discharge ◽  
Liquid Phase Method ◽  
Lifepo4 Cathode

LiFePO4 as cathode materials for lithium-ion battery were prepared by a liquid-phase method which utilizes FeSO4•7H2O, NH4H2PO4, H2O2, CH3COOLi and glucose as raw materials. The aqueous can be directly used in the synthesis of FePO4•xH2O without any treatment and the ethanol should be distilled before the synthesis of LiFePO4. The result showed that the high purity of FePO4•xH2O can be achieved even prepared with the aqueous which was used for five times. LiFePO4 cathode material prepared with the distilled ethanol exhibited the best initial discharge capacity of 156.3 mAh•g-1 and the capacity retention ratio 99.49% after 30 cycles at 0.1 C rate.

Modification of liquid-phase synthesis of lithium-iron phosphate, a cathode material for lithium-ion battery

2012 ◽  
Vol 85 (6) ◽  
pp. 879-882 ◽  
Author(s):  
E. N. Kudryavtsev ◽  
R. V. Sibiryakov ◽  
D. V. Agafonov ◽  
V. N. Naraev ◽  
A. V. Bobyl’
Keyword(s):  
Liquid Phase ◽  
Cathode Material ◽  
Lithium Ion Battery ◽  
Lithium Iron Phosphate ◽  
Lithium Ion ◽  
Iron Phosphate ◽  
Phase Synthesis

Lithium storage properties of Li2MoO3 and its effect as a cathode additive in full cells

2021 ◽  
Author(s):  
Taolin Zhao ◽  
Shaokang Chen ◽  
Xingyue Gao ◽  
Yuxia Zhang
Keyword(s):  
Liquid Phase ◽  
Electrochemical Performance ◽  
Solid Phase ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Phase Method ◽  
Lithium Storage ◽  
Liquid Phase Method ◽  
Cathode Additive ◽  
Storage Properties

High-performance lithium–ion batteries (LIBs) are the main development direction of future energy storage devices. However, most LIBs still face a problem of high first irreversible capacity loss. Pre-lithiation technology can increase the content of active lithium source and compensate the loss of active lithium during the first cycle. Adding lithium supplement additive to the cathode provides an effective way to improve the electrochemical performance of LIBs. Here, Li2MoO3 has been investigated as a cathode additive in the full cells. In order to optimize its preparation, Li2MoO3 has been prepared by three different methods, including solid-phase method, liquid-phase method and ultrasonic method. Based on material characterization and electrochemical performance tests, Li2MoO3 material prepared by liquid-phase method shows the best lithium storage properties and chosen as a cathode additive in the LiNi[Formula: see text]Co[Formula: see text]Mn[Formula: see text]O2/SiO@C full cells. The addition of Li2MoO3 has successfully improved the electrochemical performance of the full cell. The first discharge specific capacity increases from 103.9 mAh g[Formula: see text] to 130.4 mAh g[Formula: see text]. In short, Li2MoO3 material is a promising cathode additive for LIBs.

LiMn2O4 Prepared by Liquid Phase Flameless Combustion with F-Doped for Lithium-Ion Battery Cathode Materials

2013 ◽  
Vol 652-654 ◽  
pp. 825-830 ◽  
Author(s):  
Ming Wu Xiang ◽  
Xian Yan Zhou ◽  
Zhi Fang Zhang ◽  
Mi Mi Chen ◽  
Hong Li Bai ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Electrochemical Performance ◽  
Raw Materials ◽  
Lithium Ion ◽  
X Ray Diffraction ◽  
Flameless Combustion ◽  
Capacity Retention ◽  
Vibrational Bands ◽  
Novel Method ◽  
Discharge Capacities

LiMn2O4-yFywere synthesized by a novel method named liquid phase flameless combustion reaction with LiNO3, MnAc2.4H2O and LiF as raw materials calcined at 600 °C for 3 h with HNO3as aided oxidant. All samples were investigated by X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR) and electrochemical performance. The results show that: all samples have main phase of LiMn2O4with impurity of Mn3O4and the vibrational bands of Mn-O are a little red shift by doping F, which indicated that the F- enter the host structure of LiMn2O4successfully. The electrochemical performance show that the initial discharge capacities of F-doped samples are lower than pristine LiMn2O4, which is 117.7 mAh•g-1. However, the capacity retention of LiMn2O3.96F0.04and LiMn2O3.90F0.10are 73.6% and 74.5%, respectively, which are higher than pristine LiMn2O4, which is only 69.0% after 40 cycles.

Composite FeF3•3H2O/C Cathode Material for Lithium Ion Battery

2011 ◽  
Vol 391-392 ◽  
pp. 1090-1094 ◽  
Author(s):  
Chuan Wu ◽  
Xiao Xiao Li ◽  
Feng Wu ◽  
Ying Bai ◽  
Mi Zi Chen ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion ◽  
Cycling Performance ◽  
High Energy ◽  
Phase Method ◽  
Electrochemical Performances ◽  
X Ray Diffraction ◽  
Voltage Range ◽  
Liquid Phase Method ◽  
Cyclic Voltammetery

Composite FeF3•3H2O/C was prepared by mixing FeF3•3H2O with acetylene black through high-energy milling, and used as cathode material for Li-ion battery. The structure and the morphology of the as-prepared composite FeF3•3H2O/C were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). When compared with FeF3•3H2O synthesized by a liquid-phase method, the composite FeF3•3H2O/C had no distinct difference in crystal structure, but shows that a well distributed particle size of 100~1000nm. The electrochemical performances of FeF3•3H2O/C composite were evaluated by charge-discharge test and cyclic voltammetery (CV). With a current density of 23.7mAg-1 in the voltage range of 2.0~4.5V at room temperature, the FeF3•3H2O/C composite achieved a maximum discharge capacity of 112 mAhg-1, as well as a good cycling performance.

The Research of Silica-Coated Chromium Oxide Green Pigment Prepared by Liquid Phase Method

2011 ◽  
Vol 84-85 ◽  
pp. 514-518
Author(s):  
Hong Yan Zhang ◽  
Jin Hua Wang ◽  
Li Fang Zhang ◽  
Li Li Wang
Keyword(s):  
Liquid Phase ◽  
Experimental Method ◽  
Chromium Oxide ◽  
Particle Surface ◽  
Tetraethyl Orthosilicate ◽  
Hydrolysis Reaction ◽  
Phase Method ◽  
Green Pigment ◽  
Coated Particle ◽  
Liquid Phase Method

This paper is researched on SiO2-coated Cr2O3 for the hydrolysis reaction of tetraethyl orthosilicate. The influences of precursors, solid contents of suspension and Si ratio of water on coated particle surface are investigated. The products are characterized and the conclusion shows that the experimental method is feasible.

An inorganic–organic nanocomposite calix[4]quinone (C4Q)/CMK-3 as a cathode material for high-capacity sodium batteries

2017 ◽  
Vol 4 (11) ◽  
pp. 1806-1812 ◽  
Author(s):  
Shibing Zheng ◽  
Jinyan Hu ◽  
Weiwei Huang
Keyword(s):  
Cathode Material ◽  
Discharge Capacity ◽  
High Capacity ◽  
Initial Discharge Capacity ◽  
Capacity Retention ◽  
Initial Discharge ◽  
Sodium Batteries

A novel high-capacity cathode material C4Q/CMK-3 for SIBs shows an initial discharge capacity of 438 mA h g−1 and a capacity retention of 219.2 mA h g−1 after 50 cycles.

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