A Platinum Nanowire Electrocatalyst on Single-walled Carbon Nanotubes to Drive Hydrogen Evolution

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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A Platinum Nanowire Electrocatalyst on Single-walled Carbon Nanotubes to Drive Hydrogen Evolution. / Rajala, Taneli; Kronberg, Rasmus; Backhouse, R; Buan, Marthe Emelie Melandsø; Tripathi, M; Zitolo, A; Jiang, Hua; Laasonen, Kari; Susi, T; Jaouen, F; Kallio, Tanja.

julkaisussa: Applied Catalysis B: Environmental, Vuosikerta 265, 118582, 2020.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Bibtex - Lataa

@article{06c044404032404d9c46a8e735e60dea,
title = "A Platinum Nanowire Electrocatalyst on Single-walled Carbon Nanotubes to Drive Hydrogen Evolution",
abstract = "Pertinent existing hydrogen technologies for energy storage require unsustainable amounts of scarce platinum group metals. Here, an electrocatalyst comprising high-aspect-ratio platinum nanowires (PtNWs) on single-walled carbon nanotubes (SWNTs) with ultralow Pt content (340 ngPt cm−2) is employed for hydrogen evolution reaction (HER). A comparable activity (10 mA cm−2 at −18 mV vs. RHE) to that of state-of-the-art Pt/C (38,000 ngPt cm−2) is reached in acidic aqueous electrolyte. This is attributed to favorable PtNW interaction with SWNTs and PtNW edge-sites which adsorb hydrogen optimally and aid at alleviating repulsive interactions. Moreover, the metallic nature of Pt, morphological effects and enhanced wetting contribute positively. The PtNW/SWNT relevance is emphasized at a proton-exchange-membrane electrolyzer generating stable voltage for more than 2000 h, successfully competing with the state-of-the-art reference but with one tenth of Pt mass loading. Overall, this work presents an unprecedently efficient HER catalyst and opens up avenues for PtNW/SWNT catalyzing other high-impact reactions.",
author = "Taneli Rajala and Rasmus Kronberg and R Backhouse and Buan, {Marthe Emelie Melands{\o}} and M Tripathi and A Zitolo and Hua Jiang and Kari Laasonen and T Susi and F Jaouen and Tanja Kallio",
note = "| openaire: EC/H2020/721065/EU//CREATE",
year = "2020",
doi = "10.1016/j.apcatb.2019.118582",
language = "English",
volume = "265",
journal = "APPLIED CATALYSIS B-ENVIRONMENTAL",
issn = "0926-3373",
publisher = "Elsevier BV",

}

RIS - Lataa

TY - JOUR

T1 - A Platinum Nanowire Electrocatalyst on Single-walled Carbon Nanotubes to Drive Hydrogen Evolution

AU - Rajala, Taneli

AU - Kronberg, Rasmus

AU - Backhouse, R

AU - Buan, Marthe Emelie Melandsø

AU - Tripathi, M

AU - Zitolo, A

AU - Jiang, Hua

AU - Laasonen, Kari

AU - Susi, T

AU - Jaouen, F

AU - Kallio, Tanja

N1 - | openaire: EC/H2020/721065/EU//CREATE

PY - 2020

Y1 - 2020

N2 - Pertinent existing hydrogen technologies for energy storage require unsustainable amounts of scarce platinum group metals. Here, an electrocatalyst comprising high-aspect-ratio platinum nanowires (PtNWs) on single-walled carbon nanotubes (SWNTs) with ultralow Pt content (340 ngPt cm−2) is employed for hydrogen evolution reaction (HER). A comparable activity (10 mA cm−2 at −18 mV vs. RHE) to that of state-of-the-art Pt/C (38,000 ngPt cm−2) is reached in acidic aqueous electrolyte. This is attributed to favorable PtNW interaction with SWNTs and PtNW edge-sites which adsorb hydrogen optimally and aid at alleviating repulsive interactions. Moreover, the metallic nature of Pt, morphological effects and enhanced wetting contribute positively. The PtNW/SWNT relevance is emphasized at a proton-exchange-membrane electrolyzer generating stable voltage for more than 2000 h, successfully competing with the state-of-the-art reference but with one tenth of Pt mass loading. Overall, this work presents an unprecedently efficient HER catalyst and opens up avenues for PtNW/SWNT catalyzing other high-impact reactions.

AB - Pertinent existing hydrogen technologies for energy storage require unsustainable amounts of scarce platinum group metals. Here, an electrocatalyst comprising high-aspect-ratio platinum nanowires (PtNWs) on single-walled carbon nanotubes (SWNTs) with ultralow Pt content (340 ngPt cm−2) is employed for hydrogen evolution reaction (HER). A comparable activity (10 mA cm−2 at −18 mV vs. RHE) to that of state-of-the-art Pt/C (38,000 ngPt cm−2) is reached in acidic aqueous electrolyte. This is attributed to favorable PtNW interaction with SWNTs and PtNW edge-sites which adsorb hydrogen optimally and aid at alleviating repulsive interactions. Moreover, the metallic nature of Pt, morphological effects and enhanced wetting contribute positively. The PtNW/SWNT relevance is emphasized at a proton-exchange-membrane electrolyzer generating stable voltage for more than 2000 h, successfully competing with the state-of-the-art reference but with one tenth of Pt mass loading. Overall, this work presents an unprecedently efficient HER catalyst and opens up avenues for PtNW/SWNT catalyzing other high-impact reactions.

U2 - 10.1016/j.apcatb.2019.118582

DO - 10.1016/j.apcatb.2019.118582

M3 - Article

VL - 265

JO - APPLIED CATALYSIS B-ENVIRONMENTAL

JF - APPLIED CATALYSIS B-ENVIRONMENTAL

SN - 0926-3373

M1 - 118582

ER -

ID: 40208431