|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||2016 Functional Nanomaterials: Emerging Nanomaterials and Techniques for 3D Architectures
||Fabrication of Three Dimensional Carbon Nanotube - Nickel Nanofoam Heterostructures for Energy Storage Applications
||Mengya Li, Rachel Carter, Cary Pint
|On-Site Speaker (Planned)
Three dimensional foams of core-shell Ni/Ni(OH)2 nanostructures were demonstrated as a versatile template to design three-dimensional carbon nanotube-nickel nanowire heterostructured foams. Core-shell Ni/Ni(OH)2 foams were prepared by electrochemical anodization of Ni-nanowire foams. This produces a core-shell structure with nanoscale surface crystallites enabling high yield nucleation and growth of carbon nanotubes. The variation of reduction and growth process parameters in chemical vapor deposition leads to a range of heterostructures from thin carbon nanotube interfaces with Ni foam that preserves the initial foam structure to high yield carbon growth to produce a lightweight, high surface area foam. In the latter case, we demonstrate this three-dimensional self-supporting material as an excellent electrode for a sodium ion battery-yielding performance comparable to state-of-the-art carbons. This work emphasizes a tunable process to fabricate three-dimensional self-supporting foams based on electrochemically fabricated core-shell nanostructures that can be broadly applied toward energy storage or sensing applications.