CoNiSe2 Nanostructures for Clean Energy Production
Open accessAbstract
Comparative investigation of the electrochemical oxygen evolution reaction (OER) activity for clean energy production was performed by fabricating three different electrodes, namely, NiSe2, CoSe2, and CoNiSe2, synthesized by hydrothermal treatment. Cubic, orthorhombic, and hexagonal structures of NiSe2, CoSe2, and CoNiSe2 were confirmed by X-ray diffraction (XRD) and also by other characterization studies. Perfect nanospheres, combination of distorted nanospheres and tiny nanoparticles, and sharp-edge nanostructures of NiSe2, CoSe2, and CoNiSe2 were explored by surface morphological images. Higher OER activity of the binary CoNiSe2 electrode was achieved as 188 mA/g current density with a comparatively low overpotential of 234 mV along with higher conductivity and low charge transfer resistance when compared to its unary NiSe2 and CoSe2 electrodes. A low Tafel slope value of 82 mV/dec was also achieved for the same binary CoNiSe2 electrode in a half-cell configuration. The overall 100% retention achieved for all of the fabricated electrodes in a stability test of OER activity suggested that the excellent optimum condition was obtained during the synthesis. This could definitely be a revelation in the synthesis of novel binary combinations of affordable metal selenides for clean energy production.
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The shift and overlap of NiSe2 and CoSe2 XRD peaks at 30-40 degrees indicate lattice distortion from interaction between the two selenides and support heterostructure formation.
“Compared with the standard cards, the shift and superposition of NiSe 2 and CoSe 2 characteristic peaks at 301-401 could be observed, which was attributed to the lattice distortion caused by the interaction between the two selenide crystals, thus proving the formation of a bimetallic selenide heterostructure.37,38”
From Bimetallic Ni–Co selenide heterostructure aerogel for highly efficient overall water splitting (2023) · cites this paper as [37]
The Results and Discussion XRD passage says all three samples matched their standard diffraction patterns, contrary to the claimed shift from the standard cards. It identifies a distinct hexagonal CoNiSe2 pattern and confirms binary selenide formation, but does not attribute that formation to overlapping NiSe2 and CoSe2 peaks or interaction-induced lattice distortion. Page numbers are unavailable in our copy. (LLM, conf=0.88)
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Experimental — accuracy not yet measuredThe Co site in NiSe2-CoSe2 possessed better adsorption property and high activity toward HER.
“indicating that the Co site possessed better adsorption property and high activity toward HER[21,51].”
From Interface and electronic structure regulation of Mo-doped NiSe2-CoSe2 heterostructure aerogel for efficient overall water splitting (2023) · cites this paper as [51]
The Introduction and Results and Discussion describe CoNiSe2 activity for oxygen evolution (OER), not hydrogen evolution (HER). A search for Co-site adsorption and HER activity found no passage assessing either claim; the paper’s OER findings do not establish or refute them. (LLM, conf=0.76)
Experimental — accuracy not yet measured
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Liu, H., Yang, F., Chen, F., Che, S., Chen, N., Sun, S., Ta, N., Sun, Y., Wu, N., Sun, Y., et al. (2023) · Journal of Colloid and Interface Science · doi:10.1016/j.jcis.2023.02.154 · Cited by 66 · see citing works
Bimetallic Ni–Co selenide heterostructure aerogel for highly efficient overall water splitting
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- Authors
- Jansi Rani, B., Ravi, G., Yuvakkumar, R., Saravanakumar, B., Thambidurai, M., Dang, C., & Velauthapillai, D.
- Affiliations
- Alagappa University , , , ,
- Alagappa University (IN)
- Central Institute of Plastics Engineering and Technology (IN)
- Nanyang Technological University (SG)
- Western Norway University of Applied Sciences (NO)
- Corresponding author
- Yuvakkumar, Rathinam
- Velauthapillai, Dhayalan
- ORCID
- Venue
- ACS Omega
- Publisher
- American Chemical Society (ACS)
- Published
- 2020-06-09
- Volume
- 5
- Issue
- 24
- Pages
- 14702-14710
- ISSN
- 2470-1343 (ISSN-L)
- PMC
- PMC7315609
- OpenAlex
- W3034395962
- Cited by
- 64
- References
- 57
- Citations by year
- 2026: 10 · 2025: 16 · 2024: 16 · 2023: 9 · 2022: 9 · 2021: 2 · 2020: 2
- FWCI
- 1.09
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- ACS Omega (publishedVersion, other-oa)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- NORA - Norwegian Open Research Archives (submittedVersion, other-oa)
- 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
- NiSe2, CoSe2, oxygen evolution reaction, hydrothermal synthesis, nanostructures, nanospheres, crystal structure, Tafel slope, charge transfer resistance, electrode stability, clean energy generation
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