Electrochemical characterization of carbon nanotubes for hydrogen storage

I. Lombardi, M. Bestetti, C. Mazzocchia, P. L. Cavallotti, U. Ducati

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The electrochemical behavior and the reversible hydrogen storage capacity of multiwalled carbon nanotubes (MWNTs) have been investigated both in alkaline (6 M KOH) and acid (0.3 M H 2SO 4) electrolytic solutions by cyclic voltammetry and constant current charge/discharge measurements. Different purification treatments were performed on as-prepared MWNTs to improve hydrogen uptake. About 0.1 wt% of hydrogen was reversibly stored in MWNTs after nitric acid treatment. Vacuum annealing (950°C, 1 h) of MWNTs lowered the electrochemical hydrogen uptake. Finally, electrochemical oxidation of MWNTs at high potentials allowed an increase in hydrogen charge capacity to 0.3 wt%.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume7
Issue number5
DOIs
Publication statusPublished - 2004
Externally publishedYes

Fingerprint

Carbon Nanotubes
Multiwalled carbon nanotubes (MWCN)
Hydrogen storage
Carbon nanotubes
carbon nanotubes
Hydrogen
hydrogen
Nitric Acid
electrochemical oxidation
Electrochemical oxidation
nitric acid
Nitric acid
purification
Discharge (fluid mechanics)
Cyclic voltammetry
Purification
Vacuum
Annealing
vacuum
acids

ASJC Scopus subject areas

  • Electrochemistry
  • Materials Science(all)

Cite this

Electrochemical characterization of carbon nanotubes for hydrogen storage. / Lombardi, I.; Bestetti, M.; Mazzocchia, C.; Cavallotti, P. L.; Ducati, U.

In: Electrochemical and Solid-State Letters, Vol. 7, No. 5, 2004.

Research output: Contribution to journalArticle

Lombardi, I. ; Bestetti, M. ; Mazzocchia, C. ; Cavallotti, P. L. ; Ducati, U. / Electrochemical characterization of carbon nanotubes for hydrogen storage. In: Electrochemical and Solid-State Letters. 2004 ; Vol. 7, No. 5.
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