Effect of Different Calcination Temperatures on the Structure and Properties of Zirconium-Based Coating Layer Modified Cathode Material Li1.2Mn0.54Ni0.13Co0.13O2

2021 ◽  
Author(s):  
Zijun Liao ◽  
Jiankai Kang ◽  
Qi Luo ◽  
Caifeng Pan ◽  
Jiangdong Chen ◽  
...  
Keyword(s):  
Cathode Material ◽  
Coating Layer ◽  
Structure And Properties ◽  
Calcination Temperatures

THE EFFECTS OF CARBON NANO-COATING ON Li(Ni0.8Co0.15Al0.05)O2 CATHODE MATERIAL USING ORGANIC CARBON FOR Li-ION BATTERY

2010 ◽  
Vol 17 (01) ◽  
pp. 51-58 ◽  
Author(s):  
JEONG-HUN JU ◽  
YOUNG-MIN CHUNG ◽  
YU-RIM BAK ◽  
MOON-JIN HWANG ◽  
KWANG-SUN RYU
Keyword(s):  
Cathode Material ◽  
Coating Layer ◽  
Sol Gel ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Cyclic Voltammogram ◽  
Active Materials ◽  
Nano Coating ◽  
Primary Particles ◽  
Li Ion

Carbon nano-coated LiNi 0.8 Co 0.15 Al 0.05 O 2/ C (LNCAO/C) cathode-active materials were prepared by a sol–gel method and investigated as the cathode material for lithium ion batteries. Electrochemical properties including the galvanostatic charge–discharge ability and cyclic voltammogram behavior were measured. Cyclic voltammetry (2.7–4.8 V) showed that the carbon nano-coating improved the "formation" of the LNCAO electrode, which was related to the increased electronic conductivity between the primary particles. The carbon nano-coated LNCAO/C exhibited good electrochemical performance at high C -rate. Also, the thermal stability at a highly oxidized state of the carbon nano-coated LNCAO was remarkably enhanced. The carbon nano-coating layer can serve as a physical and/or (electro-)chemical protection shell for the underlying LNCAO, which is attributed to an increase of the grain connectivity (physical part) and also to the protection of metal oxide from chemical reactions (chemical part).

Effects of fast lithium-ion conductive coating layer on the nickel rich layered oxide cathode material

2019 ◽  
Vol 45 (3) ◽  
pp. 3177-3185 ◽  
Author(s):  
Meng Wang ◽  
Yongqiang Gong ◽  
Yijie Gu ◽  
Yunbo Chen ◽  
Lin Chen ◽  
...  
Keyword(s):  
Cathode Material ◽  
Coating Layer ◽  
Lithium Ion ◽  
Layered Oxide ◽  
Conductive Coating ◽  
Oxide Cathode

The effect of silicon on the structure and properties of hot-dip aluminium-based coatings

2019 ◽  
Vol 24 (2) ◽  
pp. 16-21
Author(s):  
Andrii Zinchuk ◽  
Oskar Moraczyński ◽  
Barbara Kucharska
Keyword(s):  
Automotive Industry ◽  
Coating Layer ◽  
Steel Substrate ◽  
Intermetallic Phase ◽  
Aluminum Coating ◽  
Structure And Properties ◽  
Phase Layer ◽  
Continuous Increase ◽  
Aluminum Coatings ◽  
Intermediate Phases

The continuous increase in demand for aluminum coatings for the automotive industry is associated with the need to improve their quality in terms of protective and mechanical properties. The aluminum coatings produced hot-dip, on the border with the steel substrate formed intermediate phases FeAl3, and Fe2Al5, which reduce the corrosion resistance and limit the possibility of forming a coated article. The paper determines the effect of the addition of 7% Si to an aluminum coating (690°C/60 s) on the microstructure thickness and type of intermediate phases as well as hardness and surface features. It has been shown that the addition of Si results in a 40 % increase in the hardness of the coating and reduce the surface roughness. In addition, is limited interdiffusion of Al and Fe, as a result of which an intermetallic phase layer is formed, Al7-9Fe2Si enriched phase, 4 times thinner than a coating without the addition of Si, while maintaining the thickness of the outer coating layer.

Effects of Pr3+-deficiency on structure and properties of PrBaCo2O5+δ cathode material–A comparison with Ba2+-deficiency case

2014 ◽  
Vol 272 ◽  
pp. 371-377 ◽  
Author(s):  
Xuening Jiang ◽  
Yuchao Shi ◽  
Wenlong Zhou ◽  
Xiangnan Li ◽  
Zhixian Su ◽  
...  
Keyword(s):  
Cathode Material ◽  
Structure And Properties

Preparation and Effect of (3-aminopropyl)triethoxysilane-Coated LiNi0.5Co0.2Mn0.3O2 Cathode Material for Lithium Ion Batteries

2020 ◽  
Vol 20 (6) ◽  
pp. 3460-3465
Author(s):  
Mi-Ra Shin ◽  
Seon-Jin Lee ◽  
Seong-Jae Kim ◽  
Tae-Whan Hong
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Photoelectron Spectroscopy ◽  
Coating Layer ◽  
Lithium Ion ◽  
X Ray ◽  
Amine Groups ◽  
Coating Layers ◽  
Discharge Capacities

Surface coating using (3-aminopropyl)triethoxysilane (APTES) has been applied to improve the electrochemical properties of LiNi0.5Co0.2Mn0.3O2 (NCM523) cathode materials. The APTES coating layer on the surface of NCM523 protects the direct contact area between the cathode material and the electrolyte, and facilitates the presence of electrons through the abundance of electron-rich amine groups, thereby improving electrochemical performance. X-ray photoelectron spectroscopy confirmed the existence of APTES coating layers on the surface of NCM523 cathode materials, revealing three peaks—N1s, O1s, and Si1s—that were not identified in bare NCM523. In addition, the discharge capacities of the bare electrode and the APTES-coated NCM523 electrode were 121.06 mAh/g and 156.43 mAh/g, respectively. To the best of our knowledge, the use of an APTES coating on NCM523 cathode materials for lithium-ion batteries has never been reported.

Enhanced electrochemical properties of LiNi0.6Co0.2Mn0.2O2 cathode material by the diffusional Al2O3 coating layer

Ionics ◽  
2018 ◽  
Vol 25 (2) ◽  
pp. 411-419 ◽  
Author(s):  
Xiaoling Cui ◽  
Ling Ai ◽  
Liping Mao ◽  
Yingchun Xie ◽  
Youwei Liang ◽  
...  
Keyword(s):  
Cathode Material ◽  
Electrochemical Properties ◽  
Coating Layer ◽  
Al2o3 Coating

scholarly journals Enhancement of the Electrochemical Performance of LiNi1/3Co1/3Mn1/3O2 Cathode Material by Double-Layer Coating with Graphene Oxide and SnO2 for Lithium-Ion Batteries

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Yuxin Ma ◽  
Ping Cui ◽  
Dan Zhan ◽  
Bing Gan ◽  
Youliang Ma ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Cathode Material ◽  
Electrochemical Impedance ◽  
Coating Layer ◽  
Rate Capability ◽  
Electrode Polarization ◽  
Transfer Resistance ◽  
X Ray ◽  
Double Coating

The graphene oxide-coated SnO2-Li1/3Co1/3Mn1/3O2 (GO-SnO2-NCM) cathode material was successfully synthesized via a facile wet chemical method. The pristine NCM and GO-SnO2-NCM were characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The results showed that the double-coating layer did not destroy the NCM crystal structure, with multiple nano-SnO2 particles and GO uniformly covering the NCM surface. Electrochemical tests indicated that GO-SnO2-NCM exhibited excellent cycling performance, with 90.7% capacity retention at 1 C after 100 cycles, which was higher than 74.3% for the pristine NCM at the same cycle. The rate capability showed that the double-coating layer enhanced surface electronic–ionic transport. Electrochemical impedance spectroscopy results confirmed that the GO-SnO2-coating layer effectively suppressed the increased electrode polarization and charge transfer resistance during cycling.

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