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.

Preparation of LiCoO2 from Cathode Materials of Spent Lithium Ion Batteries

2011 ◽  
Vol 183-185 ◽  
pp. 1553-1557 ◽  
Author(s):  
Fang Gu ◽  
Qian Nie
Keyword(s):  
Lithium Ion Batteries ◽  
Discharge Capacity ◽  
Cathode Materials ◽  
Retention Rate ◽  
Ammonium Oxalate ◽  
Lithium Ion ◽  
X Ray Diffraction ◽  
Capacity Retention ◽  
Excellent Electrochemical Performance ◽  
Pure Phase

Preparation of LiCoO2 cathode materials from spent lithium ion batteries are presented. The processes contain reduction, separation, precipitation, regeneration. The optimum conditions of recovery are: the calcination temperature is 500°C, the volume rate of sulfuric acid and the water reaches 0.375, the hightest leach-ing rate of cobalt is 43.53%. According to the solubility of oxalate, ammonium oxalate is choiced as precipitation agent. The investigation of X-ray diffraction (XRD), scanning electron microscopy (SEM), charge-discharge testes at voltage ranges rate from 2.8V to 4.2V versus Li , 0.2 C rate are performed. The results reveal that the regenerative LiCoO2 is pure phase, initial discharge capacity is 128.63 mAh•g-1, after 50 cycles the discharge capacity is 118.61 mAh•g-1, capacity retention rate is 92.21%. The regenerative LiCoO2 exhibits excellent electrochemical performance and stability. The materials may find promising applications in lithium ion batteries.

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.

scholarly journals Li2ZrO3-Coated Monocrystalline LiAl0.06Mn1.94O4 Particles as Cathode Materials for Lithium-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3223
Author(s):  
Chunliu Li ◽  
Banglei Zhao ◽  
Junfeng Yang ◽  
Linchao Zhang ◽  
Qianfeng Fang ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
Discharge Capacity ◽  
Cathode Materials ◽  
Room Temperature ◽  
Lithium Ion ◽  
Rate Performance ◽  
Al Doping ◽  
Capacity Retention ◽  
Initial Capacity

Li2ZrO3-coated and Al-doped micro-sized monocrystalline LiMn2O4 powder is synthesized through solid-state reaction, and the electrochemical performance is investigated as cathode materials for lithium-ion batteries. It is found that Li2ZrO3-coated LiAl0.06Mn1.94O4 delivers a discharge capacity of 110.90 mAhg−1 with 94% capacity retention after 200 cycles at room temperature and a discharge capacity of 104.4 mAhg−1 with a capacity retention of 87.8% after 100 cycles at 55 °C. Moreover, Li2ZrO3-coated LiAl0.06Mn1.94O4 could retain 87.5% of its initial capacity at 5C rate. This superior cycling and rate performance can be greatly contributed to the synergistic effect of Al-doping and Li2ZrO3-coating.

scholarly journals Review— A Review on the Anode and Cathode Materials for Lithium-Ion Batteries with Improved Subzero Temperature Performance

2022 ◽  
Author(s):  
Petros Selinis ◽  
Filippos Farmakis
Keyword(s):  
Low Temperature ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Subzero Temperature ◽  
Capacity Retention ◽  
Active Materials ◽  
Transfer Resistance

Abstract Lithium-ion batteries (LiBs) have been widely used in a variety of applications, however they still suffer from low capacity retention, large capacity fade ratio or inability to charge efficiently at low temperatures, especially below -20 oC. The reasons behind these drawbacks originate from the nature of active materials such as the anode and the cathode, along with the composition of electrolyte solutions. In particular, from the perspective of active materials, it has been reported that the most common problems arise from the dramatic increase in the resistances, especially charge transfer resistance, and the decrease of lithium-ion diffusivity, by more than one order of magnitude. In this report, we review the most recent strategies in the development of anode and cathode materials and composites, focusing on enhanced electronic and ionic conductivities for improved low-temperature electrochemical performance. Our overview aims to provide a comprehensive comparative study of the proposed methods to overcome the low-temperature challenges in order to develop high energy-density LiBs with enhanced capacity retention, cycling stability and high-rate capability under extreme conditions.

scholarly journals High-Voltage “Single-Crystal” Cathode Materials for Lithium-Ion Batteries

2021 ◽  
Vol 35 (3) ◽  
pp. 1918-1932
Author(s):  
Yinzhong Wang ◽  
Errui Wang ◽  
Xu Zhang ◽  
Haijun Yu
Keyword(s):  
Single Crystal ◽  
Lithium Ion Batteries ◽  
High Voltage ◽  
Cathode Materials ◽  
Lithium Ion
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