Nano-sized carbon materials produced during the metal dusting process of stainless steel and their hydrogen storage capability

Jeng-Kuei Chang*, Heng Yi Tsai, Kuan Yu Lin, Wen Ta Tsai, Cheng-Yu Wang, Ming Sheng Yu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The nano-sized carbon materials produced during the metal dusting process of 304L stainless steel were studied in this investigation. In the reaction atmosphere of CO/CO2 (35:1) mixed gas, the nanofibers and multi-wall carbon nano-tubes (MWCNTs) could be obtained at 500 °C and 600 °C, respectively. Hydrogen storage performance of the MWCNTs was evaluated by an electrochemical method; the experimental data indicated that their discharge capacity was 57 mAh/g. Two methods, including heat treatment and acid etching, were used to purify the as-prepared MWCNTs. It was found that the hydrogen storage capacity of the heat-treated and acid-treated MWCNTs was greatly improved to 85 mAh/g and 103 mAh/g, respectively. The considerable capacity increase of the etched MWCNTs was attributed to the elimination of the surface amorphous carbon and the coexisted metal particles.

Original languageEnglish
Title of host publicationECS Transactions - Hydrogen Production, Transport, and Storage 2
Pages45-54
Number of pages10
Edition17
DOIs
StatePublished - 17 Nov 2008
EventHydrogen Production, Transport, and Storage 2 - 211th ECS Meeting - Chicago, IL, United States
Duration: 6 May 200711 May 2007

Publication series

NameECS Transactions
Number17
Volume6
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceHydrogen Production, Transport, and Storage 2 - 211th ECS Meeting
CountryUnited States
CityChicago, IL
Period6/05/0711/05/07

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