Metal phosphate-coated Ni-rich layered oxide positive electrode materials for Li-ion batteries: improved electrochemical performance and decreased Li residuals content

The growing popularity of Li-ion batteries in the field of energy storage necessitates the constant development of methods for improving their performance. To address this task, this study describes the effect of transition metal (TM=Al, Co, Fe) phosphate coatings on the electrochemical performance...

Full description

Saved in:
Bibliographic Details
Published in:Electrochimica acta 2017-12, Vol.257, p.217-223
Main Authors: Park, Kwangjin, Park, Jun-Ho, Choi, Byungjin, Kim, Jung Hwa, Hong, Suk-Gi, Han, Heung Nam
Format: Article
Language:English
Subjects:
Aluminum
Batteries
Coated electrodes
Coating effects
Cobalt
Effects
Electrochemical analysis
Electrode materials
Energy storage
Iron
Li residuals
Lithium
Lithium-ion batteries
Lithium-ion battery
Metals
Nickel
Nickel cobalt manganese oxide (NCM)
Phosphate coatings
Rechargeable batteries
Storage batteries
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The growing popularity of Li-ion batteries in the field of energy storage necessitates the constant development of methods for improving their performance. To address this task, this study describes the effect of transition metal (TM=Al, Co, Fe) phosphate coatings on the electrochemical performance of Li1.0Ni0.8Co0.15Mn0.05O2 positive electrode materials, highlighting the importance of the TM/P mole ratio, and reveals that decreased amounts of Li residuals were observed for all coated samples. Considering Li residual removal as well as capacity and capacity retention upon cycling, the most effective surface modification was achieved in the case of a 1:1 Co/P coating, which increased initial capacity and capacity retention by 10mAhg−1 and 3%, respectively, as compared to the uncoated sample. Moreover, the beneficial effect of the above Co/P coating is also confirmed for the more Ni-rich Li1.0Ni0.91Co0.06Mn0.03O2.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2017.10.101