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Anisotropic Carbon Nanotube Structures with High Aspect Ratio Nanopores for Li-Ion Battery Anodes.

Published version
Peer-reviewed

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Authors

Engelke, Simon 
Copic, Davor 

Abstract

Technological advances in membrane technology, catalysis, and electrochemical energy storage require the fabrication of controlled pore structures at ever smaller length scales. It is therefore important to develop processes allowing for the fabrication of materials with controlled submicron porous structures. We propose a combination of colloidal lithography and chemical vapor deposition of carbon nanotubes to create continuous straight pores with diameters down to 100 nm in structures with thicknesses of more than 300 μm. These structures offer unique features, including continuous and parallel pores with aspect ratios in excess of 3000, a low pore tortuosity, good electrical conductivity, and electrochemical stability. We demonstrate that these structures can be used in Li-ion batteries by coating the carbon nanotubes with Si as an active anode material.

Description

Keywords

carbon nanotubes, colloidal lithography, chemical vapor deposition, high-aspect ratio structures, submicron pores

Journal Title

ACS Appl Nano Mater

Conference Name

Journal ISSN

2574-0970
2574-0970

Volume Title

4

Publisher

American Chemical Society (ACS)
Sponsorship
Engineering and Physical Sciences Research Council (EP/L027151/1)
Engineering and Physical Sciences Research Council (EP/L015978/1)
Engineering and Physical Sciences Research Council (EP/S022953/1)
European Research Council (337739)
Engineering and Physical Sciences Research Council (EP/L016087/1)
Engineering and Physical Sciences Research Council (EP/N016920/1)
European Commission Horizon 2020 (H2020) ERC (866005)
EPSRC, Marie Curie Fellowship, ERC