Tungsten carbide nanowalls as electrocatalyst for hydrogen evolution reaction: New approach to durability issue

Young Jin Ko, Jung Min Cho, Inho Kim, Doo Seok Jeong, Kyeong Seok Lee, Jong Keuk Park, Young Joon Baik, Heon-Jin Choi, Wook Seong Lee

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We report a new approach to the durability issue in tungsten carbide electrocatalyst for hydrogen evolution reaction (HER), in a form radically differing from that of the conventional nanoparticle approach: the WC nanowalls, bottom-up grown by a plasma-assisted deposition on Si wafer. The pristine nanowall was highly crystalline and its surface was smooth in atomic scale, which enabled a superior durability in HER environment: no oxidation occurred at prolonged cycling (10,000 cycles) in the HER environment, even without additional functionalization or modification. The electrochemical activity, as presented by Tafel slope and turnover frequency (TOF), was as excellent as those of the best data in the literature.

Original languageEnglish
Pages (from-to)684-691
Number of pages8
JournalApplied Catalysis B: Environmental
Volume203
DOIs
Publication statusPublished - 2017 Apr 1

Fingerprint

Tungsten carbide
Electrocatalysts
tungsten
durability
Hydrogen
Durability
hydrogen
turnover
Nanoparticles
Crystalline materials
Plasmas
plasma
oxidation
Oxidation
tungsten carbide

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

Cite this

Ko, Young Jin ; Cho, Jung Min ; Kim, Inho ; Jeong, Doo Seok ; Lee, Kyeong Seok ; Park, Jong Keuk ; Baik, Young Joon ; Choi, Heon-Jin ; Lee, Wook Seong. / Tungsten carbide nanowalls as electrocatalyst for hydrogen evolution reaction : New approach to durability issue. In: Applied Catalysis B: Environmental. 2017 ; Vol. 203. pp. 684-691.
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Tungsten carbide nanowalls as electrocatalyst for hydrogen evolution reaction : New approach to durability issue. / Ko, Young Jin; Cho, Jung Min; Kim, Inho; Jeong, Doo Seok; Lee, Kyeong Seok; Park, Jong Keuk; Baik, Young Joon; Choi, Heon-Jin; Lee, Wook Seong.

In: Applied Catalysis B: Environmental, Vol. 203, 01.04.2017, p. 684-691.

Research output: Contribution to journalArticle

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