Bio-inspired synthesis of 3-D network of NiO-Ni nanowires on carbonized eggshell membrane for lithium-ion batteries. (2nd February 2019)

• Record Type: Journal Article
• Authors: Meng, Xinghua; Deng, Da
• Is Part Of: Chemical engineering science. Volume 194(2019)
• Page Start: 134
• Page End: 141
• Publication Date: 2019-02-02
• Subjects: Bio-inspired -- Bio-template -- Nanowire -- Composite -- Membrane -- Electrode -- Battery; Chemical engineering -- Periodicals; Génie chimique -- Périodiques; Chemical engineering; Periodicals; Electronic journals; 660
• DOI: 10.1016/j.ces.2018.06.038
• Languages: English
• ISSNs: 0009-2509

Abstract

Graphical abstract: Highlights: Composite nanowires of both metal oxide and metal nanoparticles successfully synthesized. 3D networks NiO-Ni nanowires attached on carbonized eggshell membrane. Precursor was synthesized on eggshell membrane in a diaphragm-assisted reactor. Eggshell membrane played multiple roles as bio-substrate and the source of reducing agents. 3D networks NiO-Ni nanowires attached on carbonized eggshell membrane demonstrated improved rate and cycling performances. Abstract: Composite nanowires incorporating both metal oxide and metal nanoparticles as the basic building units are attracting much attention recently. We report here a facile approach to synthesize 3D networks of 1D nanowires of formed by both NiO and Ni nanoparticle. The composite nanowires were in-situ synthesized on carbonized eggshell membrane. Here, α-Ni(OH)2 nanowire precursor was synthesized on eggshell membrane under mild conditions in a diaphragm-assisted reactor first. Then the precursor was transformed into composite of NiO-Ni nanowires on carbonized eggshell membrane under heat treatment in argon. The eggshell membrane played multiple roles as the substrate to collect the α-Ni(OH)2 nanowire precursor and then as the source of reducing agents to partially reduce Ni 2+ to Ni 0 . When tested for lithium-ion batteries, the composite of 3D networks NiO-Ni nanowires attached on carbonized eggshell membrane demonstrated impressively improved rate and cycling performances, as compared to that of bare NiO nanowires. The idea and method outline here based on bio-inspired synthesis using bio-template to prepare composites could be applied to synthesize other functional materials.