Polymer-assisted deposition of films and preparation of carbon nanotube arrays using the films

US8487028B2 · kind B2 · utility

Assignee

• LOS ALAMOS NATIONAL SECURITY, LLC · US

Inventors

• Hongmei Luo · Los Alamos, US
• Qingwen Li · Suzhou, CN
• Eve Bauer · Los Alamos, US
• Anthony K. Burrell · Los Alamos, US
• Thomas Mark McCleskey · Los Alamos, US
• Quanxi Jia · Los Alamos, US

Key dates

• Filing date: Aug 20, 2012
• Grant date: Jul 16, 2013
• Expiry date: Aug 20, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B82Y40/00
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Carbon nanotubes were prepared by coating a substrate with a coating solution including a suitable solvent, a soluble polymer, a metal precursor having a first metal selected from iron, nickel, cobalt, and molybdenum, and optionally a second metal selected from aluminum and magnesium, and also a binding agent that forms a complex with the first metal and a complex with the second metal. The coated substrate was exposed to a reducing atmosphere at elevated temperature, and then to a hydrocarbon in the reducing atmosphere. The result was decomposition of the polymer and formation of carbon nanotubes on the substrate. The carbon nanotubes were often in the form of an array on the substrate.