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DOI | 10.1039/c6ee02641a |
Self-polymerized dopamine as an organic cathode for Li- and Na-ion batteries | |
Liu T.; Kim K.C.; Lee B.; Chen Z.; Noda S.; Jang S.S.; Lee S.W. | |
发表日期 | 2017 |
ISSN | 17545692 |
起始页码 | 205 |
结束页码 | 215 |
卷号 | 10期号:1 |
英文摘要 | Self-polymerized dopamine is a versatile coating material that has various oxygen and nitrogen functional groups. Here, we demonstrate the redox-active properties of self-polymerized dopamine on the surface of few-walled carbon nanotubes (FWNTs), which can be used as organic cathode materials for both Li- and Na-ion batteries. We reveal the multiple redox reactions between self-polymerized dopamine and electrolyte ions in the high voltage region from 2.5 to 4.1 V vs. Li using both density functional theory (DFT) calculations and electrochemical measurements. Free-standing and flexible hybrid electrodes are assembled using a vacuum filtration method, which have a 3D porous network structure consisting of polydopamine coated FWNTs. The hybrid electrodes exhibit gravimetric capacities of ∼133 mA h g-1 in Li-cells and ∼109 mA h g-1 in Na-cells utilizing double layer capacitance from FWNTs and multiple redox-reactions from polydopamine. The polydopamine itself within the hybrid film can store high gravimetric capacities of ∼235 mA h g-1 in Li-cells and ∼213 mA h g-1 in Na-cells. In addition, the hybrid electrodes show a high rate-performance and excellent cycling stability, suggesting that self-polymerized dopamine is a promising cathode material for organic rechargeable batteries. © The Royal Society of Chemistry 2017. |
英文关键词 | Amines; Capacitance; Cathodes; Density functional theory; Electrochemical electrodes; Electrolytes; Ions; Neurophysiology; Polymers; Redox reactions; Yarn; Double-layer capacitance; Electrochemical measurements; Few-walled carbon nanotubes; Gravimetric capacity; High-rate performance; Organic cathode materials; Porous network structures; Redox-active properties; Sodium-ion batteries; cation; coating; electrochemical method; electrode; electrolyte; fullerene; inorganic compound; oxygen; polymerization; power generation; redox conditions |
语种 | 英语 |
来源期刊 | Energy & Environmental Science
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/190568 |
作者单位 | G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, United States; Computational NanoBio Technology Laboratory, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, United States; Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan |
推荐引用方式 GB/T 7714 | Liu T.,Kim K.C.,Lee B.,et al. Self-polymerized dopamine as an organic cathode for Li- and Na-ion batteries[J],2017,10(1). |
APA | Liu T..,Kim K.C..,Lee B..,Chen Z..,Noda S..,...&Lee S.W..(2017).Self-polymerized dopamine as an organic cathode for Li- and Na-ion batteries.Energy & Environmental Science,10(1). |
MLA | Liu T.,et al."Self-polymerized dopamine as an organic cathode for Li- and Na-ion batteries".Energy & Environmental Science 10.1(2017). |
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