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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