气候变化领域集成服务门户(CCPortal): A superhydrophilic "nanoglue" for stabilizing metal hydroxides onto carbon materials for high-energy and ultralong-life asymmetric supercapacitors

CCPortal

DOI	10.1039/c7ee01040k
	A superhydrophilic "nanoglue" for stabilizing metal hydroxides onto carbon materials for high-energy and ultralong-life asymmetric supercapacitors
	Li S.; Yu C.; Yang J.; Zhao C.; Zhang M.; Huang H.; Liu Z.; Guo W.; Qiu J.
发表日期	2017
ISSN	17545692
起始页码	1958
结束页码	1965
卷号	10 期号:9
英文摘要	Coupling electroactive species with carbon supports to fabricate hybrid electrodes holds promise for high-performance supercapacitors. Nevertheless, the poor compatibility and weak bonding between carbon substrates and electroactive species remain a bottleneck to be tackled. Herein, we present a superhydrophilic "nanoglue" strategy for stabilizing NiCo-layered double hydroxide (NiCo-LDH) nanosheets on inert carbon cloth (CC) by employing a nitrogen-doped (N-doped) carbon layer as the structure/interface coupling bridge to make hybrids (denoted as CC-NC-LDH) for supercapacitors. Such a "nanoglue" on a CC substrate results in the formation of a superhydrophilic surface/interface, which is favorable for the robust and uniform growth of NiCo-LDH on the CC, and helps effectively tune the electronic structural states and results in a strong coupling interaction between the CC and NiCo-LDH nanosheets. Benefiting from these integrated merits, asymmetric supercapacitors fabricated with the CC-NC-LDH hybrids as the positive electrode and typical activated carbon as the negative electrode deliver a high energy density of 69.7 W h kg-1 at a power density of 0.8 kW kg-1, with an ultra-low average capacitance fade rate of ∼0.00065% per cycle within 20000 cycles at a current density of 10 A g-1. This superhydrophilic "nanoglue" strategy can also be extended to assemble other kinds of active species on different inert substrates, and holds the potential for creating efficient and robust electrode materials for energy-related devices. © 2017 The Royal Society of Chemistry.
英文关键词	Activated carbon; Doping (additives); Electrodes; Hydrophilicity; Nanosheets; Supercapacitor; Asymmetric supercapacitor; Electroactive species; Electrode material; High energy densities; Layered double hydroxides; Positive electrodes; Strong coupling interactions; Superhydrophilic surface; Substrates; activated carbon; electrode; electron; electronic equipment; energy efficiency; inorganic compound; nanoparticle; performance assessment
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190428
作者单位	State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China; School of Chemical Engineering and Technology, Xi'An Jiaotong University, Xi'an, 710049, China
推荐引用方式 GB/T 7714	Li S.,Yu C.,Yang J.,et al. A superhydrophilic "nanoglue" for stabilizing metal hydroxides onto carbon materials for high-energy and ultralong-life asymmetric supercapacitors[J],2017,10(9).
APA	Li S..,Yu C..,Yang J..,Zhao C..,Zhang M..,...&Qiu J..(2017).A superhydrophilic "nanoglue" for stabilizing metal hydroxides onto carbon materials for high-energy and ultralong-life asymmetric supercapacitors.Energy & Environmental Science,10(9).
MLA	Li S.,et al."A superhydrophilic "nanoglue" for stabilizing metal hydroxides onto carbon materials for high-energy and ultralong-life asymmetric supercapacitors".Energy & Environmental Science 10.9(2017).