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

doi:10.1016/j.apcatb.2016.10.085

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

63 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 language	English
Pages (from-to)	684-691
Number of pages	8
Journal	Applied Catalysis B: Environmental
Volume	203
DOIs	https://doi.org/10.1016/j.apcatb.2016.10.085
Publication status	Published - 2017 Apr 1

Bibliographical note

Funding Information:
This work was supported by the institutional program grant ( 2E26370 ) from Korea Institute of Science and Technology . The authors are grateful to M.K. Cho (in Advanced Analysis Center, KIST) for the comments for TEM characterization.

Publisher Copyright:
© 2016 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Catalysis
Environmental Science(all)
Process Chemistry and Technology

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10.1016/j.apcatb.2016.10.085

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title = "Tungsten carbide nanowalls as electrocatalyst for hydrogen evolution reaction: New approach to durability issue",

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.",

author = "Ko, {Young Jin} and Cho, {Jung Min} and Inho Kim and Jeong, {Doo Seok} and Lee, {Kyeong Seok} and Park, {Jong Keuk} and Baik, {Young Joon} and Choi, {Heon Jin} and Lee, {Wook Seong}",

note = "Funding Information: This work was supported by the institutional program grant ( 2E26370 ) from Korea Institute of Science and Technology . The authors are grateful to M.K. Cho (in Advanced Analysis Center, KIST) for the comments for TEM characterization. Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

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doi = "10.1016/j.apcatb.2016.10.085",

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T2 - New approach to durability issue

AU - Ko, Young Jin

AU - Cho, Jung Min

AU - Kim, Inho

AU - Jeong, Doo Seok

AU - Lee, Kyeong Seok

AU - Park, Jong Keuk

AU - Baik, Young Joon

AU - Choi, Heon Jin

AU - Lee, Wook Seong

N1 - Funding Information: This work was supported by the institutional program grant ( 2E26370 ) from Korea Institute of Science and Technology . The authors are grateful to M.K. Cho (in Advanced Analysis Center, KIST) for the comments for TEM characterization. Publisher Copyright: © 2016 Elsevier B.V.

PY - 2017/4/1

Y1 - 2017/4/1

N2 - 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.

AB - 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.

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JF - Applied Catalysis B: Environmental

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

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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