Polymorphic CoSe2with Mixed Orthorhombic and Cubic Phases for Highly Efficient Hydrogen Evolution Reaction
Abstract
We report polymorphic CoSe2 (p-CoSe2) with mixed orthorhombic and cubic phases as a highly active electrocatalyst toward hydrogen evolution reaction (HER). The p-CoSe2 is obtained by calcining CoSex via electrodeposition at 300 °C. The results of X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) demonstrated the crystal structure of p-CoSe2. The p-CoSe2 exhibits excellent electrocatalytic activity for HER with a low onset overpotential of -70 mV and a small Tafel slope of ∼30 mV/decade, which are basically state-of-the-art performance of earth-abundant electrocatalysts. The HER performance of p-CoSe2 was much higher than that of amorphous CoSex, cubic CoSe2, and CoSe. This study offers a competitive electrocatalyst for HER and opens up a new strategy to the synthesis of catalysts for energy conversion.
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Ni and Co based selenides have been demonstrated to be efficient HER catalysts.
“Meanwhile, Ni and Co based selenides have also been demonstrated to be efficient HER catalysts.11,15,34−37”
From Prussian Blue Analogues Derived Penroseite (Ni,Co)Se <sub>2</sub> Nanocages Anchored on 3D Graphene Aerogel for Efficient Water Splitting (2017) · cites this paper as [35]
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References 60 · Cited by 278
- Authors
- Zhang, H., Yang, B., Wu, X., Li, Z., Lei, L., & Zhang, X.
- Affiliations
- Zhejiang University (CN)
- Corresponding author
- Zhang, Xingwang
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-01-16
- Volume
- 7
- Issue
- 3
- Pages
- 1772-1779
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2328170038
- Cited by
- 278
- References
- 60
- Citations by year
- 2026: 9 · 2025: 14 · 2024: 17 · 2023: 17 · 2022: 28 · 2021: 21 · 2020: 22 · 2019: 22 · 2018: 37 · 2017: 49 · 2016: 27 · 2015: 15
- FWCI
- 12.61
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ACS Applied Materials & Interfaces (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (21276231, 21476201, U1162128, U1462201)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
- Keywords
- cobalt selenide, CoSe2, polymorphism, hydrogen evolution reaction, electrocatalysts, electrodeposition, calcination, earth-abundant catalysts, crystal structure, overpotential, Tafel slope
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