Electrochemical Storage of Hydrogen in Modified Carbon Nanotubes
EMSL Project ID
2365
Abstract
Strategy: Boron has one less electron than carbon. When carbon in the CNTs is substituted by boron, the electron density of the CNTs will decrease (this will strongly modifies the properties of the CNTs). Storage/intercalation of electron donors (hydrogen) in the boron-doped CNTs should be easier than that of un-doped CNTs. Similarly, other electron acceptors, such as metal cations, may also help the storage of H when they are doped on the surface of CNTs. Objective: To study the electrochemical storage behavior of hydrogen in electron-acceptor modified CNTs (multi-wall and single wall CNTs). This study may help understand the mechanism of hydrogen storage in CNTs and may also help develop high capacity battery anode materials. Technical Approach: 1. Synthesize CNTs (multi-wall tubes and single wall tubes) using catalytic chemical vapor deposition (CVD) method. Purchase commercially available CNTs. 2. Doping electron-acceptor materials into CNTs by high temperature solid-state reaction methods. 3. Characterize electrochemical hydrogen storage behavior of the doped- CNTs. 4. Characterization of promising materials using TEM, Raman, and other methods, to study storage mechanism. A CHI 660 Electrochemical Workstation will be used to perform all the electrochemical characterization study.
Project Details
Project type
Exploratory Research
Start Date
2001-10-10
End Date
2002-11-25
Status
Closed
Released Data Link
Team
Principal Investigator