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Composite electrodes that possess both rational structures and appropriate integration are needed to deliver high electrochemical performance in energy storage devices. In this paper, a flexible and binder-free electrode material based on a heterogeneous core-shell structure of CuCoO@Ni(OH) nanosheets grown on carbon cloth was fabricated by a simple method. The unique three-dimensional hierarchical structure gives the electrode a large specific surface area, which enables rapid response and increases of specific capacitance. The CuCoO@Ni(OH)/carbon fiber cloth (CFC) composite electrode exhibited a specific capacitance of 2160 F g at 1 A g and a good rate capability energy of 82.7% at 20 A g. A flexible all-solid-state asymmetric supercapacitor (FAASC) was assembled with the CuCoO@Ni(OH)/CFC electrode as the positive electrode, and activated carbon (AC)/CFC as the negative electrode. This device showed both a high energy density and power density (58.9 W h kg at a power density of 400 W kg), and good long-term cycling stability. Furthermore, the assembled CuCoO@Ni(OH)/CFC//AC/CFC devices were capable of driving a blue light-emitting diode after a short charge. The remarkable performance of this CuCoO@Ni(OH)/CFC electrode indicates that this heterogeneous structure has great potential for applications in flexible high-performance energy storage devices.
This article was published in the following journal.
Name: Journal of colloid and interface science
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Controlled vocabulary thesaurus produced by the NATIONAL LIBRARY OF MEDICINE. It consists of sets of terms naming descriptors in a hierarchical structure that permits searching at various levels of specificity.
The shell-like structure projects like a little wing (pinna) from the side of the head. Ear auricles collect sound from the environment.
A complex of proteins that assemble the SNRNP CORE PROTEINS into a core structure that surrounds a highly conserved RNA sequence found in SMALL NUCLEAR RNA. They are found localized in the GEMINI OF COILED BODIES and in the CYTOPLASM. The SMN complex is named after the Survival of Motor Neuron Complex Protein 1, which is a critical component of the complex.
Use of a metal casting, usually with a post in the pulp or root canal, designed to support and retain an artificial crown.
A spiral tube that is firmly suspended in the bony shell-shaped part of the cochlea. This ENDOLYMPH-filled cochlear duct begins at the vestibule and makes 2.5 turns around a core of spongy bone (the modiolus) thus dividing the PERILYMPH-filled spiral canal into two channels, the SCALA VESTIBULI and the SCALA TYMPANI.