A high-energy, full concentration-gradient cathode material with excellent cycle and thermal stability for lithium ion batteries

2014 ◽  
Vol 2 (40) ◽  
pp. 17130-17138 ◽  
Author(s):  
P. Y. Hou ◽  
L. Q. Zhang ◽  
X. P. Gao
Keyword(s):  
Thermal Stability ◽  
Surface Layer ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Concentration Gradient ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Stability ◽  
Layered Oxide ◽  
Ni Content

A full concentration-gradient layered oxide presents excellent cycle stability and thermal stability as compared with a normal oxide due to the stable structure with low Ni content on the surface layer.

scholarly journals Effect of Different Composition on Voltage Attenuation of Li-Rich Cathode Material for Lithium-ion Batteries

2019 ◽  
Author(s):  
Jun Liu ◽  
Qiming Liu ◽  
Huali Zhu ◽  
Feng Lin ◽  
Yan Ji ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Nickel Content ◽  
Lithium Ion ◽  
High Energy ◽  
Commercial Application ◽  
Layered Oxide ◽  
Oxide Cathode ◽  
Voltage Attenuation

Li-rich layered oxide cathode materials have become one of the most promising cathode materials for high-energy-density lithium-ion batteries owning to its high theoretical specific capacity, low cost, high operating voltage and environmental friendliness. Yet they suffer from severe capacity and voltage attenuation during prolong cycling, which blocks their commercial application. To clarify these causes, we synthesize 0.5Li2MnO3·0.5LiNi0.8Co0.1Mn0.1O2 (LL-811) with high-nickel-content cathode material by a solid-sate complexation method, and it manifests a lot slower capacity and voltage attenuation during prolong cycling compared to LL-111 and LL-523 cathode materials. The capacity retention at 1C after 100 cycles reaches to 87.5% and the voltage attenuation after 100 cycles is only 0.460 V. Combining X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM), it indicates that increasing the nickel content not only stabilizes the structure but also alleviates the attenuation of capacity and voltage. Therefore, it provides a new idea for designing of Li-rich layered oxide cathode materials that suppress voltage and capacity attenuation.

Progressive concentration gradient nickel-rich oxide cathode material for high-energy and long-life lithium-ion batteries

2019 ◽  
Vol 7 (13) ◽  
pp. 7728-7735 ◽  
Author(s):  
Xing Xu ◽  
Lizhi Xiang ◽  
Liguang Wang ◽  
Jiyuan Jian ◽  
Chunyu Du ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Concentration Gradient ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
Oxide Cathode ◽  
Long Life ◽  
First Time

A novel progressive concentration gradient cathode material, LiNi0.7Co0.13Mn0.17O2, with superior capacity and cycling stability is reported for the first time.

A Novel Cathode Material with a Concentration-Gradient for High-Energy and Safe Lithium-Ion Batteries

2010 ◽  
Vol 20 (3) ◽  
pp. 485-491 ◽  
Author(s):  
Yang-Kook Sun ◽  
Dong-Hui Kim ◽  
Chong Seung Yoon ◽  
Seung-Taek Myung ◽  
Jai Prakash ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Concentration Gradient ◽  
Lithium Ion ◽  
High Energy

A novel concentration-gradient Li[Ni0.83Co0.07Mn0.10]O2 cathode material for high-energy lithium-ion batteries

2011 ◽  
Vol 21 (27) ◽  
pp. 10108 ◽  
Author(s):  
Yang-Kook Sun ◽  
Bo-Ram Lee ◽  
Hyung-Ju Noh ◽  
Huiming Wu ◽  
Seung-Taek Myung ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Concentration Gradient ◽  
Lithium Ion ◽  
High Energy

Boosting Cycling Stability of Ni-rich Layered Oxide Cathode by Dry Coating of Ultrastable Li3V2(PO4)3 Nanoparticles

Nanoscale ◽  
2021 ◽  
Author(s):  
Dongdong Wang ◽  
Qizhang Yan ◽  
Mingqian Li ◽  
Hongpeng Gao ◽  
Jianhua Tian ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
Next Generation ◽  
Layered Oxides ◽  
Dry Coating ◽  
Layered Oxide ◽  
Oxide Cathode

Nickel (Ni)-rich layered oxides such as LiNi0.6Co0.2Mn0.2O2 (NCM622) represent one of the most promising candidates for the next-generation high-energy lithium-ion batteries (LIBs). However, the pristine Ni-rich cathode materials usually suffer...

Tailoring atomic distribution in micron-sized and spherical Li-rich layered oxides as cathode materials for advanced lithium-ion batteries

2016 ◽  
Vol 4 (20) ◽  
pp. 7689-7699 ◽  
Author(s):  
Peiyu Hou ◽  
Guoran Li ◽  
Xueping Gao
Keyword(s):  
Thermal Stability ◽  
Energy Density ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Concentration Gradient ◽  
Lithium Ion ◽  
Cycle Life ◽  
Layered Oxides ◽  
Long Cycle ◽  
Long Cycle Life

A concentration-gradient doping strategy is introduced into micron-sized spherical Li-rich layered oxides. As a result, they exhibit high volumetric energy density, long cycle life and enhanced thermal stability.

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