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An Efficient Nickel...
An Efficient Nickel Sulfide@NiO Nanocomposite Catalyst with High Density of Active Sites for the Hydrogen Evolution Reaction in Alkaline Media
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- Khokhar, Shams Parveen (författare)
- Univ Sindh Jamshoro, Pakistan
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- Abbasi, Mazhar Ali (författare)
- Univ Sindh Jamshoro, Pakistan
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- Aftab, Umair (författare)
- Mehran Univ Engn & Technol, Pakistan
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- Abro, Muhammad Ishaq (författare)
- Mehran Univ Engn & Technol, Pakistan
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- Shah, Aqeel Ahmed (författare)
- NED Univ Engn Sci & Technol, Pakistan
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- Chandio, Ali Dad (författare)
- NED Univ Engn Sci & Technol, Pakistan
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- Bhatti, Adeel Liaquat (författare)
- Univ Sindh Jamshoro, Pakistan
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- Tahira, Aneela (författare)
- Linköpings universitet,Fysik, elektroteknik och matematik,Tekniska fakulteten
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- Ibupoto, Zafar Hussain (författare)
- Univ Sindh Jamshoro, Pakistan
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(creator_code:org_t)
- AMER SCIENTIFIC PUBLISHERS, 2021
- 2021
- Engelska.
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Ingår i: Journal of Nanoscience and Nanotechnology. - : AMER SCIENTIFIC PUBLISHERS. - 1533-4880 .- 1533-4899. ; 21:4, s. 2520-2528
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Efficient hydrogen evolution reaction (HER) catalysts based on the earth-abundant materials are highly vital to design practical and environmentally friendly water splitting devices. In this study, we present an optimized strategy for the development of active catalysts for hydrogen evolution reaction HER. The composite catalysts are prepared with the nanosurface of NiO for the deposition of NiS by hydrothermal method. In alkaline electrolyte, the NIS/NiO nanocomposite has shown excellent catalytic HER properties at the low onset potential and small Tafel slope of 72 mV dec(-1). A current density of 10 mA/cm(2) is achieved by the nanocomposite obtained with 0.4 gram of NiO as nanosurface for the deposition of NiS (sample 4) at the cost of 429 mV versus RHE. The sample 4 carries more active sites that allow it to act as excellent HER catalyst. Based on this study, we conclude that increasing the nickel oxide content into composite sample facilitates the HER process. Additionally, a long term HER stability for 10 hours and good durability is also demonstrated by the sample 4. Our findings reveal that the optimization of nickel oxide content in the preparation of catalyst leads to the excellent HER activity for the design of practical water splitting devices and other related applications.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Nickel Oxide; Nickel Sulfide; Nanocomposite; Hydrogen Evolution Reaction
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