Issue 27, 2011

A novel concentration-gradient Li[Ni0.83Co0.07Mn0.10]O2 cathode material for high-energy lithium-ion batteries

Abstract

A novel concentration-gradient Li[Ni0.83Co0.07Mn0.10]O2 cathode material was successfully synthesized viaco-precipitation, in which the core Li[Ni0.9Co0.05Mn0.05]O2 was encapsulated completely with a stable concentration-gradient layer having reduced Ni content. The electrochemical and thermal properties of the concentration-gradient Li[Ni0.83Co0.07Mn0.10]O2 were studied and compared to those of the core Li[Ni0.9Co0.05Mn0.05]O2 material alone. The concentration-gradient material had a superior lithium intercalation stability and thermal stability compared to the core material. The high capacity was delivered from the Ni-rich core Li[Ni0.9Co0.05Mn0.05]O2, and the improved thermal stability was achieved by the Ni-depleted concentration-gradient layer with outer surface composition of Li[Ni0.68Co0.12Mn0.20]O2. The concentration-gradient materials open a new era for the development of advanced Li-ion batteries with high energy density, long cycle life, and improved safety.

Graphical abstract: A novel concentration-gradient Li[Ni0.83Co0.07Mn0.10]O2 cathode material for high-energy lithium-ion batteries

Article information

Article type
Paper
Submitted
05 Dec 2010
Accepted
13 Jan 2011
First published
09 Feb 2011

J. Mater. Chem., 2011,21, 10108-10112

A novel concentration-gradient Li[Ni0.83Co0.07Mn0.10]O2 cathode material for high-energy lithium-ion batteries

Y. Sun, B. Lee, H. Noh, H. Wu, S. Myung and K. Amine, J. Mater. Chem., 2011, 21, 10108 DOI: 10.1039/C0JM04242K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements