Symmetry Effect on the Enhancement of Lithium-Ion Mobility in Layered Oxides Li2A2B2TiO10 (A = La, Sr, Ca; B = Ti, Ta)

2021 ◽  
Vol 125 (7) ◽  
pp. 3689-3697
Author(s):  
Selorm Joy Fanah ◽  
Farshid Ramezanipour
Keyword(s):  
Ion Mobility ◽  
Lithium Ion ◽  
Layered Oxides ◽  
Symmetry Effect

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...

ChemInform Abstract: Supertetrahedral Networks and Lithium-Ion Mobility in Li2SiP2and LiSi2P3.

ChemInform ◽  
2016 ◽  
Vol 47 (51) ◽  
Author(s):  
Arthur Haffner ◽  
Thomas Braeuniger ◽  
Dirk Johrendt
Keyword(s):  
Ion Mobility ◽  
Lithium Ion

(Invited) High-Energy and Safe Lithium-Ion Batteries Using Layered Oxides Cathodes

2021 ◽  
Vol MA2021-02 (42) ◽  
pp. 1283-1283
Author(s):  
Guiliang Xu ◽  
Xiang LIU ◽  
Khalil Amine
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
Layered Oxides

Facile synthesis of fusiform layered oxides assisted by microwave as cathode material for lithium-ion batteries

2017 ◽  
Vol 95 ◽  
pp. 477-482 ◽  
Author(s):  
Zhixiong Huang ◽  
Yujia Zhou ◽  
Yingying Liu ◽  
Qiang Liu ◽  
Xiaoyan Hua ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Layered Oxides ◽  
Facile Synthesis

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.

scholarly journals Improved electrochemical performance of SiO2-coated Li-rich layered oxides-Li1.2Ni0.13Mn0.54Co0.13O2

2020 ◽  
Vol 31 (21) ◽  
pp. 19475-19486
Author(s):  
Jeffin James Abraham ◽  
Umair Nisar ◽  
Haya Monawwar ◽  
Aisha Abdul Quddus ◽  
R. A. Shakoor ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Sol Gel ◽  
Rate Capability ◽  
Lithium Ion ◽  
Side Reactions ◽  
Operating Voltage ◽  
Layered Oxides ◽  
Capacity Retention ◽  
Xps Characterization

AbstractLithium-rich layered oxides (LLOs) such as Li1.2Ni0.13Mn0.54Co0.13O2 are suitable cathode materials for future lithium-ion batteries (LIBs). Despite some salient advantages, like low cost, ease of fabrication, high capacity, and higher operating voltage, these materials suffer from low cyclic stability and poor capacity retention. Several different techniques have been proposed to address the limitations associated with LLOs. Herein, we report the surface modification of Li1.2Ni0.13Mn0.54Co0.13O2 by utilizing cheap and readily available silica (SiO2) to improve its electrochemical performance. Towards this direction, Li1.2Ni0.13Mn0.54Co0.13O2 was synthesized utilizing a sol–gel process and coated with SiO2 (SiO2 = 1.0 wt%, 1.5 wt%, and 2.0 wt%) employing dry ball milling technique. XRD, SEM, TEM, elemental mapping and XPS characterization techniques confirm the formation of phase pure materials and presence of SiO2 coating layer on the surface of Li1.2Ni0.13Mn0.54Co0.13O2 particles. The electrochemical measurements indicate that the SiO2-coated Li1.2Ni0.13Mn0.54Co0.13O2 materials show improved electrochemical performance in terms of capacity retention and cyclability when compared to the uncoated material. This improvement in electrochemical performance can be related to the prevention of electrolyte decomposition when in direct contact with the surface of charged Li1.2Ni0.13Mn0.54Co0.13O2 cathode material. The SiO2 coating thus prevents the unwanted side reactions between cathode material and the electrolyte. 1.0 wt% SiO2-coated Li1.2Ni0.13Mn0.54Co0.13O2shows the best electrochemical performance in terms of rate capability and capacity retention.

scholarly journals Surface Modifications of Positive-Electrode Materials for Lithium Ion Batteries

2019 ◽  
Vol 73 (11) ◽  
pp. 880-893 ◽  
Author(s):  
Nam Hee Kwon ◽  
Joanna Conder ◽  
Mohammed Srout ◽  
Katharina M. Fromm
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Surface Modifications ◽  
Positive Electrode ◽  
Layered Oxides ◽  
Spinel Type ◽  
Surface Modified ◽  
Positive Electrode Materials

Lithium ion batteries are typically based on one of three positive-electrode materials, namely layered oxides, olivine- and spinel-type materials. The structure of any of them is 'resistant' to electrochemical cycling, and thus, often requires modification/post-treatment to improve a certain property, for example, structural stability, ionic and/or electronic conductivity. This review provides an overview of different examples of coatings and surface modifications used for the positive-electrode materials as well as various characterization techniques often chosen to confirm/detect the introduced changes. It also assesses the electrochemical success of the surface-modified positive-electrode materials, thereby highlighting remaining challenges and pitfalls.

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