期刊
SMALL
卷 14, 期 34, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201801236
关键词
charge storage; graphene; in situ polymerization; polydopamine; redox reactions
类别
资金
- National Science Foundation [ECCS-1542174]
- Samsung Advanced Institute of Technology (SAIT)'s Global Research Outreach (GRO) Program
- Korea Research Institute of Chemical Technology (KRICT) core project [KK1807-C06]
- National Research Council of Science & Technology (NST), Republic of Korea [KK1807-C00, SI1803] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Polydopamine, a functional coating material, is redox active as cathode materials for both Li- and Na-ion batteries or hybrid capacitors. Here, a polydopamine coating onto 3D graphene framework is introduced through a simple hydrothermal process, during which graphene oxide serves not only as an oxidant for assisting the polymerization of dopamine, but also as a template for the conformal growth of polydopamine. High-density films are fabricated by compressing the polydopamine-coated graphene aerogels, which can be directly used as free-standing and flexible cathodes in both Li- and Na-cells. The compact electrodes deliver high capacities of approximate to 230 mAh g(-1) in Li-cells and approximate to 211 mAh g(-1) in Na-cells based on the total mass of electrodes. These compact electrodes also exhibit exceptional cycling stability and high rate performance due to the unique structure in which polydopamine is uniformly coated on the 3D structured graphene.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据