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Magnetically Collec...
Magnetically Collected Platinum/Nickel Alloy Nanoparticles as Catalysts for Hydrogen Evolution
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- Ekeroth, Sebastian (author)
- Linköpings universitet,Plasma och ytbeläggningsfysik,Tekniska fakulteten
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- Ekspong, Joakim (author)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, SE-90187 Umeå, Sweden.
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- Perivoliotis, Dimitrios K. (author)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, SE-90187 Umeå, Sweden.
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- Sharma, Sachin (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Boyd, Robert (author)
- Linköpings universitet,Plasma och ytbeläggningsfysik,Tekniska fakulteten
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- Brenning, Nils (author)
- Linköpings universitet,KTH,Rymd- och plasmafysik,Linköping Univ, Dept Phys Chem & Biol, SE-58183 Linköping, Sweden.;KTH Royal Inst Technol, Sch Elect Engn, Div Space & Plasma Phys, SE-10044 Stockholm, Sweden.,Plasma och ytbeläggningsfysik,Tekniska fakulteten
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- Gracia-Espino, Eduardo (author)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, SE-90187 Umeå, Sweden.
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- Edman, Ludvig, 1967- (author)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, SE-90187 Umeå, Sweden.
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- Helmersson, Ulf (author)
- Linköpings universitet,Plasma och ytbeläggningsfysik,Tekniska fakulteten
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- Wågberg, Thomas, 1971- (author)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, SE-90187 Umeå, Sweden.
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(creator_code:org_t)
- 2021-12-13
- 2021
- English.
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In: ACS Applied Nano Materials. - : American Chemical Society (ACS). - 2574-0970. ; 4:12, s. 12957-12965
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Abstract
Subject headings
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- The hydrogen evolution reaction (HER) is a key process in electrochemical water splitting. To lower the cost and environmental impact of this process, it is highly motivated to develop electrocatalysts with low or no content of noble metals. Here, we report on an ingenious synthesis of hybrid PtxNi1-x electrocatalysts in the form of a nanoparticle-nanonetwork structure with very low noble metal content. The structure possesses important features such as good electrical conductivity, high surface area, strong interlinking, and substrate adhesion, which render an excellent HER activity. Specifically, the best performing Pt0.05Ni0.95 sample demonstrates a Tafel slope of 30 mV dec-1 in 0.5 M H2SO4 and an overpotential of 20 mV at a current density of 10 mA cm-2 with high stability. The impressive catalytic performance is further rationalized in a theoretical study, which provides insight into the mechanism on how such small platinum content can allow for close-to-optimal adsorption energies for hydrogen.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Keyword
- catalysts
- density functional theory
- electrocatalyst
- electrochemistry
- hydrogen evolution reaction
- metal alloy
- nanoparticles
- nanoparticles
- plasma synthesis
- platinum
- pulsed plasma
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ekeroth, Sebasti ...
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Ekspong, Joakim
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Perivoliotis, Di ...
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Sharma, Sachin
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Boyd, Robert
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Brenning, Nils
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show more...
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Gracia-Espino, E ...
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Edman, Ludvig, 1 ...
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Helmersson, Ulf
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Wågberg, Thomas, ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Inorganic Chemis ...
- Articles in the publication
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ACS Applied Nano ...
- By the university
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Umeå University
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Royal Institute of Technology
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Linköping University