scholarly journals Spinel MgAl2O4 modification on LiCoO2 cathode materials with the combined advantages of MgO and Al2O3 modifications for high-voltage lithium-ion batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 6809-6817 ◽  
Author(s):  
D. D. Liang ◽  
H. F. Xiang ◽  
X. Liang ◽  
S. Cheng ◽  
C. H. Chen
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Voltage ◽  
Cathode Materials ◽  
Solid State Reaction ◽  
Lithium Ion ◽  
Voltage Range ◽  
Spinel Mgal2o4

In order to improve the electrochemical performance of LiCoO2 cathode in a high-voltage range of 3.0–4.5 V, spinel MgAl2O4 has been modified on the surface of LiCoO2 particle by a facile high-temperature solid state reaction.

Facile synthesis of well-shaped spinel LiNi0.5Mn1.5O4nanoparticles as cathode materials for lithium ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 2785-2792 ◽  
Author(s):  
Yi Cai ◽  
Shao-Zhuan Huang ◽  
Fa-Shuang She ◽  
Jing Liu ◽  
Run-Lin Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
High Voltage ◽  
Cathode Materials ◽  
Solid State Reaction ◽  
Lithium Ion ◽  
Facile Synthesis

High voltage spinel LiNi0.5Mn1.5O4nanoparticles with polyhedral shapes were synthesized by a solid state reaction using α-MnO2nanowires as precursors.

Effects of adhesives on the electrochemical performance of monodisperse LiMn0.8Fe0.2PO4/C microspheres as cathode materials for high power lithium-ion batteries

2017 ◽  
Vol 5 (17) ◽  
pp. 7952-7960 ◽  
Author(s):  
Jianlong Li ◽  
Mingwu Xiang ◽  
Yan Wang ◽  
Jinhua Wu ◽  
Hang Zhao ◽  
...  
Keyword(s):  
High Temperature ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Spray Drying ◽  
High Power ◽  
Cathode Materials ◽  
Large Scale ◽  
Lithium Ion ◽  
Co Precipitation

A facile co-precipitation approach combined with spray-drying and high-temperature calcinations was developed to synthesize LiMn0.8Fe0.2PO4/C microspheres on a large scale.

Surfactants assisted synthesis of nano-LiFePO4/C composite as cathode materials for lithium-ion batteries

2015 ◽  
Vol 3 (5) ◽  
pp. 2025-2035 ◽  
Author(s):  
Qingyu Li ◽  
Fenghua Zheng ◽  
Youguo Huang ◽  
Xiaohui Zhang ◽  
Qiang Wu ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Solid State Reaction ◽  
Lithium Ion ◽  
Solid State Reaction Method ◽  
Electrochemical Performances ◽  
Reaction Method

The solid state reaction method was applied to prepare a series of LiFePO4/C materials by adding various surfactants. The as-prepared LiFePO4/C particles using various surfactants show different electrochemical performances.

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.

The Effect of Thermal Treatment Temperature and Duration on Electrochemistry Performance of LiNi1/3Co1/3Mn1/3O2 Cathode Materials for Lithium-ion Batteries

2018 ◽  
Vol 14 (5) ◽  
pp. 440-447 ◽  
Author(s):  
Gang Sun ◽  
Chenxiao Jia ◽  
Shuanlong Di ◽  
Jianning Zhang ◽  
Qinghua Du ◽  
...  
Keyword(s):  
Solid State ◽  
Thermal Treatment ◽  
Electrochemical Performance ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Raw Materials ◽  
Lithium Ion ◽  
Solid State Method ◽  
State Method

Background: LiNi1/3Mn1/3Co1/3O2 derived from the solid-state method suffers from the problem of significant irreversible charge-discharge behavior. To improve the electrochemical performance of LiNi1/3Mn1/3Co1/3O2, there are several important factors, such as starting raw materials, precursor, preparation method and conditions. In this work, the layered LiNi1/3Mn1/3 Co1/3O2 material was prepared by solid-state reaction. By varying the temperature and duration of synthesis thermal treatment, the greater crystallinity and well-ordered layered LiNi1/3Mn1/3Co1/3O2 cathode material has been successfully synthesized. The structural properties, morphology and electrochemical properties of LiNi1/3Mn1/3Co1/3O2 powders have been investigated in detail. Methods: LiNi1/3Co1/3Mn1/3O2 cathode material was synthesized via a high-temperature solid-state method. Stoichiometric amounts of Ni(CH3COO)2•4H2O, Co(CH3COO)2•4H2O, Mn(CH3COO)2• 4H2O, and Li2CO3 as raw materials were homogenized mixed in a ball mill for 8 h at 240 rpm. By varying the temperature and duration of synthesis thermal treatment, LiNi1/3Co1/3Mn1/3O2 cathode materials with different electrochemistry performance were achieved. (a) The effect of the temperature of synthesis thermal treatment on electrochemistry performance of LiNi1/3Co1/3Mn1/3O2 was explored by calcining the above mixed powder at 800°C, 850°C, 900°C, 950°C, and 1000°C for 12 h in air at a rate of 5°C min-1. Then the target product was prepared at last. The obtained compound was named as N-800, N-850, N-900, N-950 and N-1000, respectively. (b) In order to explore the effect of the duration of synthesis thermal treatment on electrochemistry performance of LiNi1/3 Co1/3Mn1/3O2 cathode material, the above mixed raw materials were calcined at 900°C for 4 h, 8 h, 12 h, 16 h and 20 h in air at a rate of 5°C min-1. The obtained compound was named as N-4, N-8, N- 12, N-16 and N-20, respectively. The N-900 and N-12 are the same sample. Results: The cathode material sintered at 900°C for 12 h revealed the best electrochemical performance, with high-capacity and recyclability compared with other materials. Its initial discharge capacity attains 182.4 mAh g-1 at 0.2 C in the voltage range of 2.5-4.6 V, which can be attributed to its greater crystallinity and well-ordered layered structure. Compared with other studies on lithium-ion batteries given in literature, this work provides a sample, optimal and mild synthetic conditions to synthesize the cathode materials with great electrochemistry performance. Conclusion: A greater crystallinity and well-ordered layered LiNi1/3Mn1/3Co1/3O2 powders had been successfully synthesized by mixing raw materials under various temperatures and duration of synthesis thermal treatment. The XRD results indicated the I(003)/I(104) values of N-900 (N-12) is 1.591 larger than 1.2, which illustrates no undesirable cation mixing to be occurred. In this work, from the results of electrochemical property experiments, it can be indicated that the optimal synthesized conditions are 900°C for 12 h. When the calcination temperature is too low and the calcined time is too short, the material is poorly crystalline and has a poor layer structure. When the calcination temperature is too high and the calcined time is too long, lithium salt is evaporated completely during the calcination process resulting in a poor electrochemistry performance.

Effects of Li2MnO3 coating on the high-voltage electrochemical performance and stability of Ni-rich layer cathode materials for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (27) ◽  
pp. 22625-22632 ◽  
Author(s):  
Honglong Zhang ◽  
Bing Li ◽  
Jing Wang ◽  
Bihe Wu ◽  
Tao Fu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Discharge Capacity ◽  
High Voltage ◽  
Cathode Materials ◽  
Coating Layer ◽  
Lithium Ion ◽  
Capacity Retention ◽  
Active Materials

The Li2MnO3-coated LiNi0.8Co0.1Mn0.1O2 shows a higher discharge capacity and a better capacity retention. The coating layer can protect the NCM active materials from CO2, suppressing the formation of Li2CO3 on the surface of NCM materials.

Application prospects of high-voltage cathode materials in all-solid-state lithium-ion batteries

2014 ◽  
Vol 59 (17) ◽  
pp. 1950-1963 ◽  
Author(s):  
Jun Tian ◽  
Yi Jin ◽  
Yibiao Guan ◽  
Yuefeng Su ◽  
Liying Bao ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
High Voltage ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Application Prospects

Na+ and Zr4+ co-doped Li4Ti5O12 as anode materials with superior electrochemical performance for lithium ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (93) ◽  
pp. 90455-90461 ◽  
Author(s):  
Peng Lu ◽  
Xiaobing Huang ◽  
Yurong Ren ◽  
Jianning Ding ◽  
Haiyan Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Discharge Capacity ◽  
Solid State Reaction ◽  
Anode Materials ◽  
Rate Capability ◽  
Lithium Ion ◽  
Co Doped

Na+ and Zr4+ co-doped lithium titanates were successfully synthesized via a solid-state reaction in air. Particularly, Li3.97Na0.03Ti4.97Zr0.03O12 exhibits the best rate capability. Even at 20C, it delivers a discharge capacity of 140 mA h g−1.

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