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

被引：76

作者：

Ko, Young-Jin ^{[1
,2
]}

Cho, Jung-Min ^{[1
,2
]}

Kim, Inho ^{[1
]}

Jeong, Doo Seok ^{[1
]}

Lee, Kyeong-Seok ^{[1
]}

Park, Jong-Keuk ^{[1
]}

Baik, Young-Joon ^{[1
]}

Choi, Heon-Jin ^{[2
]}

Lee, Wook-Seong ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Ctr Elect Mat, Seoul 136791, South Korea

[2] Yonsei Univ, Adv Mat Sci & Engn, Seoul 120749, South Korea

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2017年 / 203卷

关键词：

Hydrogen evolution; Tungsten carbide; Nanowall structure; Electrochemical durability; Turnover frequency; THIN-FILM; CARBON; WATER; NANOPARTICLES; DEPOSITION; CATALYSIS; ENERGY;

D O I：

10.1016/j.apcatb.2016.10.085

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：684 / 691

页数：8

共 36 条

[1] ELECTRONIC-STRUCTURE AND CATALYTIC BEHAVIOR OF TUNGSTEN CARBIDE [J].