Catechol-Mediated Reversible Binding of Multivalent Cations in Eumelanin Half-Cells

被引：134

作者：

Kim, Young Jo ^{[3
]}

Wu, Wei ^{[3
]}

Chun, Sang-Eun ^{[4
]}

Whitacre, Jay F. ^{[3
]}

Bettinger, Christopher J. ^{[1
,2
]}

机构：

[1] Carnegie Mellon Univ, Dept Biomed Engn, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

[2] McGowan Inst Regenerat Med, Pittsburgh, PA 15219 USA

[3] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

[4] Univ Oregon, Dept Chem, Eugene, OR 97403 USA

来源：

ADVANCED MATERIALS | 2014年 / 26卷 / 38期

基金：

美国国家科学基金会; 美国安德鲁·梅隆基金会;

关键词：

electrochemical storage; batteries; biopolymers; magnesium; melanin; ENERGY-STORAGE; POSITIVE ELECTRODES; CATHODE MATERIALS; RAMAN-SCATTERING; MELANIN; MAGNESIUM; INTERCALATION; ALUMINUM; DENSITY; MG;

D O I：

10.1002/adma.201402295

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrochemical storage systems 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. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

收藏

页码：6572 / 6579

页数：8

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