Issue 56, 2014

Surfactant CTAB-assisted synthesis of Li1.13[Ni0.233Mn0.534Co0.233]0.87O2 with festoon-like hierarchical architectures as cathode materials for Li-ion batteries with outstanding performance

Abstract

Li-rich layered cathode materials Li1.13[Ni0.233Mn0.534Co0.233]0.87O2 are successfully synthesized by a co-precipitation method with hexadecyl trimethyl ammonium bromide (CTAB) as a surfactant. The structural and electrochemical feature changes of the resulting cathode materials have been studied thoroughly. When CTAB is considered as a surfactant, well-crystallized Li-rich layered cathode materials are obtained with Li2CO3 treatment for the festoon-like precursor hierarchically assembled by nanoplates. Among these oxides, the sample synthesized with CTAB shows a stable mixed phase on the edge of the powder particles and exhibits excellent electrochemical performance. The product delivers the highest initial discharge capacity of 394 mA h gāˆ’1 at 0.1 C (1 C = 200 mA gāˆ’1) between 2.5 and 4.8 V and 84.1% capacity is retained after 100 cycles. It is considered that the higher capacity and superior rate capability would be ascribed to the activation effect of CTAB, which can form a stable mixed structure and thus effectively alleviate the layered/spinel structure change during cycling.

Graphical abstract: Surfactant CTAB-assisted synthesis of Li1.13[Ni0.233Mn0.534Co0.233]0.87O2 with festoon-like hierarchical architectures as cathode materials for Li-ion batteries with outstanding performance

Article information

Article type
Paper
Submitted
24 Apr 2014
Accepted
19 Jun 2014
First published
19 Jun 2014

RSC Adv., 2014,4, 29534-29541

Author version available

Surfactant CTAB-assisted synthesis of Li1.13[Ni0.233Mn0.534Co0.233]0.87O2 with festoon-like hierarchical architectures as cathode materials for Li-ion batteries with outstanding performance

X. Hou, X. Zou, Y. Huang, S. Hu, Q. Ru and Y. Gao, RSC Adv., 2014, 4, 29534 DOI: 10.1039/C4RA03757J

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