Building Homogenous Li 2 TiO 3 Coating Layer on Primary Particles to Stabilize Li‐Rich Mn‐Based Cathode Materials

Small ◽  
2022 ◽  
pp. 2106337
Author(s):  
Jiuding Liu ◽  
Zhonghan Wu ◽  
Meng Yu ◽  
Honglu Hu ◽  
Yudong Zhang ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Coating Layer ◽  
Primary Particles

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).

Synergistic effect of Li2MgTi3O8 coating layer with dual ionic surface doping to improve electrochemical performance of LiNi0.6Co0.2Mn0.2O2 cathode materials

Ionics ◽  
2020 ◽  
Vol 26 (10) ◽  
pp. 4937-4948
Author(s):  
Leiwu Tian ◽  
Haifeng Yuan ◽  
Qinjun Shao ◽  
Syed Danish Ali Zaidi ◽  
Chong Wang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Performance ◽  
Cathode Materials ◽  
Coating Layer ◽  
Surface Doping

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.

In situ growth of Co3O4 coating layer derived from MOFs on LiNi0.8Co0.15Al0.05O2 cathode materials

Ionics ◽  
2018 ◽  
Vol 25 (6) ◽  
pp. 2469-2476 ◽  
Author(s):  
ZhenDong Hao ◽  
XiaoLong Xu ◽  
SiXu Deng ◽  
Hao Wang ◽  
JingBing Liu ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Coating Layer ◽  
In Situ Growth

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.

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