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.

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.

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.

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

Preparation and Electrochemical Properties of Ceria Coated Li3V2(PO4)3/C Cathode Materials for Lithium-Ion Batteries

2014 ◽  
Vol 161 (14) ◽  
pp. A2153-A2159 ◽  
Author(s):  
Yuexia Yang ◽  
Ruisong Guo ◽  
Guanglan Cai ◽  
Chao Zhang ◽  
Lan Liu ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion

Enhanced high rate performance of Li[Li0.17Ni0.2Co0.05Mn0.58−xAlx]O2−0.5x cathode material for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49651-49656 ◽  
Author(s):  
Y. L. Wang ◽  
X. Huang ◽  
F. Li ◽  
J. S. Cao ◽  
S. H. Ye
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Sol Gel ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
High Rate Performance

Pristine LNCM and LNCMA as Li-rich cathode materials for lithium ion batteries were synthesized via a sol–gel route. The Al-substituted LNCM sample exhibits an enhanced high rate performance and superior cyclability.

Improving the electrochemical properties of LiNi0.5Co0.2Mn0.3O2 at 4.6 V cutoff potential by surface coating with Li2TiO3 for lithium-ion batteries

2015 ◽  
Vol 17 (47) ◽  
pp. 32033-32043 ◽  
Author(s):  
Jing Wang ◽  
Yangyang Yu ◽  
Bing Li ◽  
Tao Fu ◽  
Dongquan Xie ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Surface Coating ◽  
Lithium Ion ◽  
Coprecipitation Method

The Li2TiO3-coated LiNi0.5Co0.2Mn0.3O2 (LTO@NCM) cathode materials are synthesized via an in situ coprecipitation method to improve the electrochemical performance of NCM.

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