Catechol‐Mediated Reversible Binding of Multivalent Cations in Eumelanin Half‐Cells. (25th August 2014)

• Record Type: Journal Article
• Authors: Kim, Young Jo; Wu, Wei; Chun, Sang‐Eun; Whitacre, Jay F.; Bettinger, Christopher J.
• Is Part Of: Advanced materials. Volume 26:Number 38(2014)
• Page Start: 6572
• Page End: 6579
• Publication Date: 2014-08-25
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201402295
• Languages: English
• ISSNs: 0935-9648

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="adma201402295-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>Electrochemical storage systems</bold> that utilize divalent cations such as Mg2+ can improve the volumetric charge storage capacities compared to those that use monovalent ions. Here, a cathode based on naturally derived melanin pigments is used in secondary Mg2+ batteries. Redox active catechol groups in melanins permit efficient and reversible exchange of divalent Mg2+ cations to preserve charge storage capacity in biopolymer cathodes for more than 500 cycles. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgh1fbr9nxn" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>