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AuthorGeng, Jing
AuthorWu, Hao
AuthorAl-Enizi, Abdullah M.
AuthorElzatahry, Ahmed A.
AuthorZheng, Gengfeng
Available date2022-05-22T09:12:26Z
Publication Date2015
Publication NameNanoscale
ResourceScopus
Identifierhttp://dx.doi.org/10.1039/c5nr04603c
URIhttp://hdl.handle.net/10576/31378
AbstractA type of freestanding, light-weight eggshell membrane-based electrode is demonstrated for supercapacitors and for oxygen evolution reaction (OER) catalysis. As a widely available daily waste, eggshell membranes have unique porous three-dimensional grid-like fibrous structures with relatively high surface area and abundant macropores, allowing for effective conjugation of carbon nanotubes and growth of NiCo2O4 nanowire arrays, an effective supercapacitor material and OER catalyst. The three-dimensional fibrous eggshell membrane frameworks with carbon nanotubes offer efficient pathways for charge transport, and the macropores between adjacent fibers are fully accessible for electrolytes and bubble evolution. As a supercapacitor, the eggshell membrane/carbon nanotube/NiCo2O4 electrode shows high specific capacitances at current densities from 1 to 20 A g-1, with excellent capacitance retention (>90%) at 10 A g-1 for over 10 000 cycles. When employed as an OER catalyst, this eggshell membrane-based electrode exhibits an OER onset potential of 1.53 V vs. the reversible hydrogen electrode (RHE), and a stable catalytic current density of 20 mA cm-2 at 1.65 V vs. the RHE. The Royal Society of Chemistry.
Languageen
PublisherRoyal Society of Chemistry
SubjectCapacitance
Carbon nanotubes
Catalysts
Electrodes
Fibrous membranes
Nickel compounds
Oxygen
Oxygen evolution reaction
Capacitance retention
Eggshell membranes
Fibrous structures
High specific capacitances
High surface area
Oxygen evolution reaction (oer)
Reversible hydrogen electrodes
Three-dimensional grids
Supercapacitor
carbon nanotube
cobalt
nanowire
nickel
oxygen
animal
catalysis
cell membrane
chemistry
egg shell
electric capacitance
electrochemical analysis
electrode
porosity
Animals
Catalysis
Cell Membrane
Cobalt
Egg Shell
Electric Capacitance
Electrochemical Techniques
Electrodes
Nanotubes, Carbon
Nanowires
Nickel
Oxygen
Porosity
TitleFreestanding eggshell membrane-based electrodes for high-performance supercapacitors and oxygen evolution reaction
TypeArticle
Pagination14378-14384
Issue Number34
Volume Number7
dc.accessType Abstract Only


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