New cathode materials for rechargeable Mg batteries: fast Mg ion transport and reversible copper extrusion in CuyMo6S8 compounds

A. Mitelman; M. D. Levi; E. Lancry; E. Levi; D. Aurbach

doi:10.1039/B710743A

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

New cathode materials for rechargeable Mg batteries: fast Mg ion transport and reversible copper extrusion in Cu_yMo₆S₈ compounds†

A. Mitelman,^a M. D. Levi,*^a E. Lancry,^a E. Levi^a and D. Aurbach^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel
E-mail: levimi@mail.biu.ac.il
Fax: (972)-3-7384053
Tel: (972)-3-5318832

Abstract

We report on a discovery of fast cathode materials, ternary Chevrel phases (CPs), Cu_yMo₆S₈, for rechargeable magnesium batteries; the related electrochemical process displays a unique coupling between reversible Mg insertion, and Cu extrusion/reinsertion; this coupling results in an entirely new intercalation mechanism which combines the total chemical reversibility of the electrochemical reaction of Mg_xCu_yMo₆S₈ with irreversibility of its separate stages once Cu extrusion stage is reached (in Mg_xCu_yMo₆S₈: 0.5x + y > 4).

Download options Please wait...

Supplementary files

Brief description of the synthesis of the precursor. Fig. 1S: (a) Rietveld analysis of the product of chemical Mg intercalation into Cu _yMo ₆S ₈ (the air-stored sample); (b) HRTEM micrograph for the fully discharged product of the composition Cu ⁰ + Mg ₂Mo ₆S ₈; (c) FFT analysis of the marked area in panel (b). Fig. 2S: Cyclic voltammetry for the Cu _yMo ₆S ₈ electrodes containing different initial amount of copper. Scheme 1S: Stoichiometries of the cathodic and anodic reactions obtained by combined integration of the cyclic voltammetry curve in Fig. 2 and the curves obtained by intermittent reversal linear voltammetry. Fig. 3S: Cycling ability of a coin-type cell with CuMo ₆S ₈ cathode and Mg anode measured at C/6 rate at 30 °C PDF (481K)

Article information

DOI: https://doi.org/10.1039/B710743A
Article type: Communication
Submitted: 13 Jul 2007
Accepted: 29 Aug 2007
First published: 05 Sep 2007

Download Citation

Chem. Commun., 2007, 4212-4214

Permissions

Request permissions

New cathode materials for rechargeable Mg batteries: fast Mg ion transport and reversible copper extrusion in Cu_yMo₆S₈ compounds

A. Mitelman, M. D. Levi, E. Lancry, E. Levi and D. Aurbach, Chem. Commun., 2007, 4212 DOI: 10.1039/B710743A

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.

Social activity

Fetching data from CrossRef.
This may take some time to load.

Chemical Communications