Enhancement of electrical conductivity and electrochemical activity of hydrogenated amorphous carbon by incorporating boron atoms

Hiroshi Naragino, Kohsuke Yoshinaga, Akira Nakahara, Sakuya Tanaka, Kensuke Honda

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

Conductive boron-doped hydrogenated amorphous carbon (B-DLC) thin films were successfully synthesized with RF plasma-enhanced CVD method. By incorporating boron atoms in amorphous carbon, conduction types were changed from n- to p-type, and volume resistivity was decreased from 30.4 (non-doped) to 6.36 × 10-2 Ω cm (B/C 2.500 atom%). B-DLC film with sp2/(sp2 + sp3) carbons of 75 atom% exhibited high resistance to electrochemically-induced corrosion in strong acid solution. Furthermore, it was clarified that boron atoms in DLC could enhance kinetics of hydrogen evolution during water electrolysis at B-DLC surface. B-DLC is, therefore, a promising electrode material for hydrogen production by increasing the concentration of boron atoms in B-DLC and enhancing the reactivity of H 2 evolution.

Original languageEnglish
Article number012042
JournalJournal of Physics: Conference Series
Volume441
Issue number1
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event11th Asia Pacific Conference on Plasma Science and Technology, APCPST 2012 and 25th Symposium on Plasma Science for Materials, SPSM 2012 - Kyoto, Japan
Duration: Oct 2 2012Oct 5 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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