Electrochemical characterization of LiCoO2 as rechargeable electrode in aqueous LiNO3 electrolyte

Riccardo Ruffo, Fabio La Mantia, Colin Wessells, Robert A. Huggins, Yi Cui

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

The development of lithium ion aqueous batteries is getting renewed interest due to their safety and low cost. We have demonstrated that the layer-structure LiCoO2 phase, the most commonly used electrode material in organic systems, can be successful delithiated and lithiated again in a water-based electrolyte at currents up to 2.70 A/g. The capacity is about 100 mAh/g at 0.135 A/g and can be tuned by cycling the electrode in different potential ranges. In fact, increasing the high cut-off voltage leads to higher specific capacity (up to 135 mAh/g) but the Coulomb efficiency is reduced (from 99.9% to 98.5%). The very good electrode kinetic is probably due to the high conductivity of the electrolyte solution (0.17 Scm- 1 at 25 °C) but this behavior is affected by the electrode load. © 2010 Elsevier B.V. All rights reserved.
Original languageEnglish (US)
Pages (from-to)289-292
Number of pages4
JournalSolid State Ionics
Volume192
Issue number1
DOIs
StatePublished - Jun 2011
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-11-001-12
Acknowledgements: This work was supported by the King Abdullah University of Science and Technology (KAUST) under the award No. KUS-11-001-12, as well as GCEP at Stanford University.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

Fingerprint

Dive into the research topics of 'Electrochemical characterization of LiCoO2 as rechargeable electrode in aqueous LiNO3 electrolyte'. Together they form a unique fingerprint.

Cite this