Jump to main content
Jump to site search

Issue 34, 2014
Previous Article Next Article

New strategy toward enhanced air electrode for Li–air batteries: apply a polydopamine coating and dissolved catalyst

Author affiliations

Abstract

In this article, we report a new strategy for enhancing the electrochemical performance of Li–air batteries through the combined use of polydopamine-coated carbon nanotubes (CNTs) and a dissolved LiI catalyst. The polydopamine layer modified the CNT surface from hydrophobic to hydrophilic, improving the wettability of the CNT-based electrode. This, in turn, increased the area of the electrode that actively participates in the reaction between the lithium ions and the dissolved oxygen in the electrolyte. LiI contained in the electrolyte effectively decreases the overpotential of the Li–air cell, by freely accessing the whole surface of the wetted electrode. We introduced the polydopamine-coated CNTs and LiI-doped electrolyte as an alternative to electrodes composed of carbon and solid catalysts. The electrochemical properties of this new system, including its capacity, overpotential, and cyclic performance, were characterized.

Graphical abstract: New strategy toward enhanced air electrode for Li–air batteries: apply a polydopamine coating and dissolved catalyst

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 Feb 2014, accepted on 31 Mar 2014 and first published on 31 Mar 2014


Article type: Paper
DOI: 10.1039/C4RA01015A
Citation: RSC Adv., 2014,4, 17434-17442
  •   Request permissions

    New strategy toward enhanced air electrode for Li–air batteries: apply a polydopamine coating and dissolved catalyst

    T. H. Yoon and Y. J. Park, RSC Adv., 2014, 4, 17434
    DOI: 10.1039/C4RA01015A

Search articles by author

Spotlight

Advertisements