Issue 8, 2011

Novel redox shuttle additive for high-voltage cathode materials

Abstract

A high voltage redox shuttle additive, tetraethyl-2,5-di-tert-butyl-1,4-phenylene diphosphate (TEDBPDP), has been synthesized and explored as an overcharge protection additive for lithium-ion cells. Cyclic voltammetry results indicate that the new shuttle molecule exhibits an oxidation potential at 4.8 V vs.Li/Li+, the highest one of any redox shuttles ever synthesized and reported in the literature. The charge–discharge tests for lithium ion cells with LiMn2O4 and Li1.2Ni0.15Co0.1Mn0.55O2 as cathode materials indicated that the TEDBPDP additive can provide successful overcharge protection at 4.75 V vs.Li/Li+, which is a suitable redox shuttle additive for high voltage cathode materials. In addition, the incorporated organophosphate groups in the molecule structure can provide an additional safety feature as a flame retardant additive, making this high-voltage redox shuttle even more attractive.

Graphical abstract: Novel redox shuttle additive for high-voltage cathode materials

Supplementary files

Article information

Article type
Communication
Submitted
01 Dec 2010
Accepted
17 Jun 2011
First published
12 Jul 2011

Energy Environ. Sci., 2011,4, 2858-2862

Novel redox shuttle additive for high-voltage cathode materials

L. Zhang, Z. Zhang, H. Wu and K. Amine, Energy Environ. Sci., 2011, 4, 2858 DOI: 10.1039/C0EE00733A

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.

Social activity

Spotlight

Advertisements