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High-performance porous spherical cathode materials based on CaCO3-template synthesis of LiNi1/3Co1/3Mn1/3O2 for lithium-ion batteries

High-performance porous spherical cathode materials based on CaCO3-template synthesis of... The porous spherical LiNi1/3Co1/3Mn1/3O2 has been synthesized using CaCO3-template and a conventional solid-state reaction. The physical and electrochemical properties of the materials are examined by many characterizations including XRD, SEM, EDS, BET, CV, EIS, and galvanostatic charge–discharge cycling. The results indicate that the as-synthesized materials prepared by this new method own a well-ordered layered α-NaFeO2 structure (space group: R-3m (166)). And massively porous channels could be observed in the spherical LiNi1/3Co1/3Mn1/3O2. Compared with the firm-surface spherical LiNi1/3Co1/3Mn1/3O2, the porous spherical material exhibits larger specific surface area and superior electrochemical performances. It delivers a higher initial capacity of 164.0 mAh g−1 at 0.1 C (1 C = 180 mA g−1) between 2.7 and 4.3 V, and 93.5 mAh g−1 is still respectively reached at 20 C. After 100 charge–discharge cycles at 1 C in the range of 2.7–4.3 V, the capacity retention is 95.1 %, indicating excellent cycling stability. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

High-performance porous spherical cathode materials based on CaCO3-template synthesis of LiNi1/3Co1/3Mn1/3O2 for lithium-ion batteries

Ionics , Volume 21 (12) – Jul 22, 2015

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References (44)

Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer-Verlag Berlin Heidelberg
Subject
Chemistry; Electrochemistry; Renewable and Green Energy; Optical and Electronic Materials; Condensed Matter Physics; Energy Storage
ISSN
0947-7047
eISSN
1862-0760
DOI
10.1007/s11581-015-1501-4
Publisher site
See Article on Publisher Site

Abstract

The porous spherical LiNi1/3Co1/3Mn1/3O2 has been synthesized using CaCO3-template and a conventional solid-state reaction. The physical and electrochemical properties of the materials are examined by many characterizations including XRD, SEM, EDS, BET, CV, EIS, and galvanostatic charge–discharge cycling. The results indicate that the as-synthesized materials prepared by this new method own a well-ordered layered α-NaFeO2 structure (space group: R-3m (166)). And massively porous channels could be observed in the spherical LiNi1/3Co1/3Mn1/3O2. Compared with the firm-surface spherical LiNi1/3Co1/3Mn1/3O2, the porous spherical material exhibits larger specific surface area and superior electrochemical performances. It delivers a higher initial capacity of 164.0 mAh g−1 at 0.1 C (1 C = 180 mA g−1) between 2.7 and 4.3 V, and 93.5 mAh g−1 is still respectively reached at 20 C. After 100 charge–discharge cycles at 1 C in the range of 2.7–4.3 V, the capacity retention is 95.1 %, indicating excellent cycling stability.

Journal

IonicsSpringer Journals

Published: Jul 22, 2015

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