Microstructures and electrochemical performances of TiO2-coated Mg–Zr co-doped NCM as a cathode material for lithium-ion batteries with high power and long circular life

2021 ◽  
Author(s):  
Dongjian Li ◽  
Hongtao Guo ◽  
Shaohua Jiang ◽  
Guilin Zeng ◽  
Wei Zhou ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Power ◽  
Lithium Ion ◽  
Electrochemical Performances ◽  
Solid State Method ◽  
Excellent Electrochemical Performance ◽  
State Method ◽  
Co Doped

Mg–Zr-Ti co-modified NCM with excellent electrochemical performance is obtained by a solid-state method.

Effects of Na and V Co-Doping on Electrochemical Performance of LiFePO4/C

2013 ◽  
Vol 724-725 ◽  
pp. 1067-1070
Author(s):  
Ning Yu Gu ◽  
Yang Li ◽  
Chao Li
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Electrochemical Performances ◽  
Solid State Method ◽  
Co Doping ◽  
State Method ◽  
Co Doped

To enhance the electrochemical performance of LiFePO4/C, Na and V have been co-doped in cathode material of the lithium ion batteries. A series of Na and V doped samples Li0.97Na0.03Fe(1-x)VxPO4/C (x=0, 0.01, 0.03, 0.05) cathode materials are synthesized by solid state method. Results show that the Li0.97Na0.03Fe0.97V0.03PO4/C exhibited the best electrochemical performances.

Mg2+–W6+ co-doped Li2ZnTi3O8 anode with outstanding room, high and low temperature electrochemical performance for lithium-ion batteries

2019 ◽  
Vol 6 (11) ◽  
pp. 3288-3294 ◽  
Author(s):  
Ziye Shen ◽  
Zhongxue Zhang ◽  
Song Wang ◽  
Zenan Liu ◽  
Lijuan Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Solid State Method ◽  
State Method ◽  
Co Doped

LM6ZTW3O co-doped with Mg2+–W6+ with excellent low temperature electrochemical performance has been synthesized using a simple solid-state method.

scholarly journals La2O3-coated Li2ZnTi3O8@C as a high performance anode for lithium-ion batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 20618-20623 ◽  
Author(s):  
Zhaohui Meng ◽  
Suhong Wang ◽  
Hongwei Wang ◽  
Lijuan Wang ◽  
Song Wang
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Solid State Method ◽  
Protective Layers ◽  
Excellent Electrochemical Performance ◽  
State Method

LZTO@C@La2O3 coated with composite protective layers with excellent electrochemical performance has been synthesized using a simple solid-state method.

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.

Synthesis of defects and TiO2 co-enhanced Li4Ti5O12 by a simple solid-state method as advanced anode for lithium-ion batteries

2021 ◽  
Vol 32 (5) ◽  
pp. 6682-6687
Author(s):  
Zhenjie Liu ◽  
Yudai Huang ◽  
Xingchao Wang ◽  
Yue Zhang ◽  
Juan Ding ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Solid State Method ◽  
State Method
Sign in / Sign up

Export Citation Format

Share Document