The Effect of Si Doping or/and Ti Coating on the Electrochemical Properties of Ni-Rich NCA (LiNi0.8Co0.15Al0.05O2) Cathode Material for Lithium-Ion Batteries

2020 ◽  
Vol 12 (10) ◽  
pp. 1581-1585
Author(s):  
Tae-Hyun Ha ◽  
Jun-Seok Park ◽  
Gyu-Bong Cho ◽  
Hyo-Jun Ahn ◽  
Ki-Won Kim ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Cathode Material ◽  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
High Capacity ◽  
Lithium Ion ◽  
Physical Contact ◽  
Precipitation Method ◽  
Si Doping

LiNixCoyAlzO2 (NCA) is one of the most promising candidates of cathode material for lithium ion batteries because of its high capacity, energy density, and low cost. However, Ni-rich NCA cathode materials suffer from side reaction (formation of lithium carbonate and hydrogen fluoride attack) between electrolyte and surface of electrode and irreversible phase transition leading to capacity fading and thermal instability. These problems could be improved by coating and doping of transition metal elements. Si doping contributes to stabilization of the unstable R-3m structure, and Ti coating is capable of prohibiting the direct physical contact of electrode with electrolyte. In this work, LiNi0.8Co0.15Al0.05O2 (NCA) cathode materials coated or/and doped by Ti and Si elements were fabricated by co-precipitation method using the ball-milling. The crystal structure, morphology and electrochemical properties are investigated using X-ray diffraction (XRD), scanning electron microscopy (FE-SEM), transmission electron microscopy (FE-TEM), and WBCS3000 (WonA tech Co., Ltd.). The EIS and charge/discharge results of Si doped and Ti coated NCA exhibited the lowest resistance value (147.19 Ω) and capacity retentions of 88% after 100 cycles at 0.5 C.

Improved performances of a LiNi0.6Co0.15Mn0.25O2 cathode material with full concentration-gradient for lithium ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (105) ◽  
pp. 103747-103753 ◽  
Author(s):  
Zhonghui Sun ◽  
Dandan Wang ◽  
Yingying Fan ◽  
Liansheng Jiao ◽  
Fenghua Li ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Concentration Gradient ◽  
High Capacity ◽  
Lithium Ion ◽  
Precipitation Method ◽  
Co Precipitation

A novel high capacity cathode material with a full concentration-gradient (FCG) structure has been successfully synthesized by a modified hydroxide co-precipitation method.

LiNi0.90Co0.07Mg0.03O2 cathode materials with Mg-concentration gradient for rechargeable lithium-ion batteries

2019 ◽  
Vol 7 (36) ◽  
pp. 20958-20964 ◽  
Author(s):  
Yudong Zhang ◽  
Hang Li ◽  
Junxiang Liu ◽  
Jicheng Zhang ◽  
Fangyi Cheng ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Concentration Gradient ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Gradient Structure ◽  
High Rate Capability

Nickel-rich LiNi0.90Co0.07Mg0.03O2 cathode material with concentration gradient structure exhibits superior high capacity, high-rate capability and cycling stability.

Effect of niobium doping on the microstructure and electrochemical properties of lithium-rich layered Li[Li0.2Ni0.2Mn0.6]O2 as cathode materials for lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (56) ◽  
pp. 45351-45358 ◽  
Author(s):  
Xiangjun Li ◽  
Hongxing Xin ◽  
Yongfei Liu ◽  
Di Li ◽  
Xueqin Yuan ◽  
...  
Keyword(s):  
Cathode Material ◽  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Niobium Doping ◽  
Nb Doping

Upon Nb doping, the electrochemical properties of the Li-rich cathode material are significantly enhanced.

Industrialization of tailoring spherical cathode material towards high-capacity, cycling-stable and superior low temperature performance for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 97818-97824 ◽  
Author(s):  
Zhonghui Sun ◽  
Liansheng Jiao ◽  
Yingying Fan ◽  
Fenghua Li ◽  
Dandan Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
High Capacity ◽  
Lithium Ion ◽  
Precipitation Method ◽  
Temperature Performance ◽  
Different Types ◽  
Co Precipitation

Three different types of spherical cathodes (Li[Ni0.6Co0.2Mn0.2]O2) were synthesized via hydroxide co-precipitation method coupled with high temperature lithiation process.

A Brief Review of Layered Rock Salt Cathode Materials for Lithium Ion Batteries

2013 ◽  
Vol 795 ◽  
pp. 245-250 ◽  
Author(s):  
T.Q. Tan ◽  
S.P. Soo ◽  
A. Rahmat ◽  
J.B. Shamsul ◽  
Rozana A.M. Osman ◽  
...  
Keyword(s):  
Energy Density ◽  
Cathode Material ◽  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Rock Salt ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Type Structure ◽  
Layered Rock ◽  
Cation Disorder

Nowadays, many researchers have been studying on the layered rock salt-type structure as cathode materials for the lithium ion batteries. LiCoO2is the most commonly used cathode material but Co is costly and toxic. Thus, alternative cathode materials which are cheaper, safer and having higher capacity are required. Replacing Co with Ni offered higher energy density battery but it raised interlayer mixing or cation disorder that impedes electrochemical properties of batteries. This paper has reviewed some recent research works that have been done to produce better and safer cathode materials from the structural perspective.

Electrochemical Properties of Li-Riched Li[Li0.2Co0.4Mn 0.4]O2 Cathode Material for Lithium Ion Batteries

2011 ◽  
Vol 347-353 ◽  
pp. 3658-3661
Author(s):  
Zhe Li ◽  
Kai Zhu ◽  
Yu Hui Wang ◽  
Gang Li ◽  
Gang Chen ◽  
...  
Keyword(s):  
Solid Solution ◽  
Cathode Material ◽  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Sol Gel ◽  
High Capacity ◽  
Lithium Ion ◽  
Structural Rearrangement ◽  
X Ray Diffraction ◽  
X Ray

The Li[Li0.2Co0.4Mn0.4]O2 cathode material was prepared by a sol-gel method. The X-ray diffraction (XRD) spectroscopic showed that the material was a solid solution of LiCoO2 and Li2MnO3. The material showed a reversible discharge capacity of 155.6 mAhg−1 in the voltage window of 2.0-4.3 V after percharge to 4.6 V. While the material cycled in the same voltage window without precharge could only deliver capacity of 77.6 mAhg−1. This high capacity was attributed to the loss of oxygen and structural rearrangement in the precharge process.

Enhanced electrochemical properties of ZnO-coated LiMnPO4 cathode materials for lithium ion batteries

Ionics ◽  
2016 ◽  
Vol 22 (9) ◽  
pp. 1551-1556 ◽  
Author(s):  
K. Rajammal ◽  
D. Sivakumar ◽  
Navaneethan Duraisamy ◽  
K. Ramesh ◽  
S. Ramesh
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion
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