Crystallinity Dependence of Ruthenium Nanocatalyst toward Hydrogen Evolution Reaction

Li, Yutong; Zhang, Lei A.; Qin, Yong; Chu, Fuqiang; Kong, Yong; Tao, Yongxin; Li, Yongxin; Bu, Yunfei; Ding, Dong; Liu, Meilin

doi:10.1021/acscatal.8b01609

Title: Crystallinity Dependence of Ruthenium Nanocatalyst toward Hydrogen Evolution Reaction

Journal Article · 22 May 2018 · ACS Catalysis

DOI: https://doi.org/10.1021/acscatal.8b01609 · OSTI ID:1543701

Li, Yutong ^[1]; Zhang, Lei A. ^[2];

^[1]; Chu, Fuqiang ^[1];

^[1]; Tao, Yongxin ^[1]; Li, Yongxin ^[1];

^[3]; Ding, Dong ^[2];

^[2]

Changzhou Univ., Changzhou, Jiangsu (China). School of Petrochemical Engineering, Jiangsu Key Lab. of Advanced Materials and Technology
Georgia Inst. of Technology, Atlanta, GA (United States). School of Materials Science and Engineering
Nanjing Univ. of Information & Technology, Nanjing, Jiangsu (China). School of Environmental Science and Engineering

The development of highly active and durable inexpensive electrocatalysts for hydrogen evolution reaction (HER) is still a formidable challenge. Herein, an ordered hexagonal-closed-packed (hcp)-Ru nanocrystal coated with a thin layer of N-doped carbon (hcp-Ru@NC) was fabricated through the thermal annealing of polydopamine (PDA)-coated Ru nanoparticle (RuNP@PDA). As an alternative to Pt/C catalyst, the hcp-Ru@NC nanocatalyst exhibited the small overpotential of 27.5 mV at a current density of 10 mA cm^–2, as well as long-term stability for HER in acid media. Interestingly, the HER performance of hcp-Ru is highly dependent on its crystallinity. The calculation from density functional theory (DFT) revealed that the difference in HER activity over various exposed surface causes the crystallinity-dependent property of hcp-Ru. The results of this study provided clues to guide the design of Ru-based inexpensive HER electrocatalyst.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1543701

Journal Information:: ACS Catalysis, Vol. 8, Issue 7; ISSN 2155-5435

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 146 works

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
chemistry
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crystallinity-dependence
hydrogen evolution reaction
N-doped graphene
electrocatalyst