Ultrafine Pt Nanoparticle-Decorated Co(OH)2 Nanosheet Arrays with Enhanced Catalytic Activity toward Hydrogen Evolution
Abstract
The combinations of Earth-abundant materials with noble metals provide an orientation for developing highly active and stable catalysts toward hydrogen production with reduced noble metal loadings. Here, we designed carbon cloth (CC)-supported Earth-abundant Co(OH) 2 nanosheets array (Co(OH) 2 /CC) as an ideal three-dimensional (3D) substrate for Pt electrodeposition (Pt–Co(OH) 2 /CC, Pt in Pt–Co(OH) 2: 5.7 wt %) to achieve top performance of a hydrogen evolution reaction (HER) under alkaline and neutral conditions. The Pt–Co(OH) 2 /CC catalyst exhibits a near-zero onset overpotential and a Tafel slope of 70 mV dec –1, and it requires an overpotential of 32, 54, and 122 mV to deliver the geometrical current density of 10, 20, and 100 mA cm –2, respectively, with catalytic activities exceeding to those of the commercial Pt/C decorated CC (Pt/C/CC). Furthermore, the HER activity of Co(OH) 2 decorated with several transition metals (Ni, Co, and Fe) was demonstrated in experiments, further validating the high HER activity of the Pt–Co(OH) 2 /CC catalyst. In addition, this catalyst also offers enhanced catalytic performance and durability under neutral conditions. Impressively, based on the normalized HER current densities by electrochemical surface area, the HER activity of the Pt–Co(OH) 2 /CC catalyst is 4.8 and 2.6 times greater than that of the commercial Pt/C/CC in alkaline and neutral solution, respectively. The unprecedented catalytic performances of Pt–Co(OH) 2 /CC catalys…
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The formation of Au NPs within the hierarchical structure of Co9S8 aerogel is due to their high tendency for being adsorbed on Co9S8 and low compatibility for structural integration into Co9S8.
“The formation of Au NPs within the hierarchical structure of Co9S8 aerogel may probably due to their high tendency for being adsorbed on Co9S8 and low compatibility for structural integration into Co9S8 [65].”
From Synthesis of Au/Co9S8 composite aerogels by one-step sol–gel method as hydrogen evolution reaction electrocatalysts (2021) · cites this paper as [65]
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- Authors
- Xing, Z., Han, C., Wang, D., Li, Q., & Yang, X.
- Affiliations
- Chinese Academy of Sciences (CN)
- University of Science and Technology of China (CN)
- Corresponding author
- Yang, Xiurong
- Venue
- ACS Catalysis
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-09-22
- Volume
- 7
- Issue
- 10
- Pages
- 7131-7135
- ISSN
- 2155-5435 (ISSN-L)
- OpenAlex
- W2760227710
- Cited by
- 222
- References
- 4
- Citations by year
- 2026: 8 · 2025: 14 · 2024: 16 · 2023: 22 · 2022: 29 · 2021: 31 · 2020: 35 · 2019: 44 · 2018: 21 · 2017: 2
- FWCI
- 7.47
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ACS Catalysis (publishedVersion)
- Funders
- National Natural Science Foundation of China (21435005, 21603215, 21627808)
- Chinese Academy of Sciences (QYZDY-SSW-SLH019)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
- Physical Sciences › Materials Science › Materials Chemistry › Hydrogen Storage and Materials
- Keywords
- hydrogen evolution reaction, platinum nanoparticles, cobalt hydroxide nanosheets, nanosheet arrays, carbon cloth support, noble metal-free catalysts, synergistic catalysis, nanointerfaces, neutral pH electrocatalysis, alkaline electrocatalysis, electrocatalyst durability
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