Metal-support interaction boosted electrocatalysis of ultrasmall iridium nanoparticles supported on nitrogen doped graphene for highly efficient water electrolysis in acidic and alkaline media

Wu, Xing; Feng, Bomin; Li, Wei; Niu, Yanli; Yu, Yanan; Lu, Shiyu; Zhong, Changyin; Liu, Pingying; Tian, Ziqi; Chen, Liang; Hu, Weihua; Li, Chang Ming

doi:10.1016/j.nanoen.2019.05.034

Cited by 174 publications

(140 citation statements)

References 59 publications

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“…Ever since the first report of strong metal–support interaction (SMSI) in heterogeneous catalysis by Tauster et al. in 1978, [ 7 ] numerous studies have been carried out to gain a deeper understanding of this effect, covering versatile fields including hydrogen production, [ 8–10 ] oxygen evolution, [ 11 ] oxygen reduction, [ 12 ] and carbon monoxide oxidation. [ 13–15 ]…”

Section: Introductionmentioning

confidence: 99%

Pt Single Atoms Supported on N‐Doped Mesoporous Hollow Carbon Spheres with Enhanced Electrocatalytic H₂‐Evolution Activity

et al. 2021

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The electronic metal–support interaction (EMSI) plays a crucial role in catalysis as it can induce electron transfer between metal and support, modulate the electronic state of the supported metal, and optimize the reduction of intermediate species. In this work, the tailoring of electronic structure of Pt single atoms supported on N‐doped mesoporous hollow carbon spheres (Pt1/NMHCS) via strong EMSI engineering is reported. The Pt1/NMHCS composite is much more active and stable than the nanoparticle (PtNP) counterpart and commercial 20 wt% Pt/C for catalyzing the electrocatalytic hydrogen evolution reaction (HER), exhibiting a low overpotential of 40 mV at a current density of 10 mA cm−2, a high mass activity of 2.07 A mg−1Pt at 50 mV overpotential, a large turnover frequency of 20.18 s−1 at 300 mV overpotential, and outstanding durability in acidic electrolyte. Detailed spectroscopic characterizations and theoretical simulations reveal that the strong EMSI effect in a unique N1−Pt1−C2 coordination structure significantly tailors the electronic structure of Pt 5d states, resulting in promoted reduction of adsorbed proton, facilitated H−H coupling, and thus Pt‐like HER activity. This work provides a constructive route for precisely designing single‐Pt‐atom‐based robust electrocatalysts with high HER activity and durability.

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Section: Introductionmentioning

confidence: 99%

Pt Single Atoms Supported on N‐Doped Mesoporous Hollow Carbon Spheres with Enhanced Electrocatalytic H₂‐Evolution Activity

et al. 2021

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“…[1,5,6] Pt-and Ir/Ru-based noble metals are the best catalysts for HER and OER, respectively. [7][8][9] Unfortunately, their large-scale applications are hampered by their high cost and scarcity. As a consequence, it is extremely necessary to develop highly active while sustainable electrocatalysts for HER and OER.…”

Section: Introductionmentioning

confidence: 99%

Strong Electronic Interaction Enhanced Electrocatalysis of Metal Sulfide Clusters Embedded Metal–Organic Framework Ultrathin Nanosheets toward Highly Efficient Overall Water Splitting

Zhao

et al. 2020

Advanced Science

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Unique metal sulfide (MS) clusters embedded ultrathin nanosheets of Fe/Ni metal-organic framework (MOF) are grown on nickel foam (NiFe-MS/MOF@NF) as a highly efficient bifunctional electrocatalyst for overall water splitting. It exhibits remarkable catalytic activity and stability toward both the oxygen evolution reaction (OER, ƞ = 230 mV at 50 mA cm −2) and hydrogen evolution reaction (HER, ƞ = 156 mV at 50 mA cm −2) in alkaline media, and bi-functionally catalyzes overall alkaline water splitting at a current density of 50 mA cm −2 by 1.74 V cell voltage without iR compensation. The enhancement mechanism is ascribed to the impregnated metal sulfide clusters in the nanosheets, which not only promote the formation of ultrathin nanosheet to greatly enlarge the reaction surface area while offering high electric conductivity, but more importantly, efficiently modulate the electronic structure of the catalytically active atom sites to an electron-rich state via strong electronic interaction and strengthen the adsorption of oxygenate intermediate to facilitate fast electrochemical reactions. This work reports a highly efficient HER/OER bifunctional electrocatalyst and may shed light on the rational design and synthesis of uniquely structured MOF-derived catalysts.

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“…However, if Ru content in the composites is taken into account, deterioration of catalytic performance in the case of impregnated Ru@CF seems plausible, particularly because overpotential at 1 A mg −1 is higher for impregnated Ru@fCF, compared to the impregnated Ru@pCP, while the former has significantly lower stability. Benefits of functionalization of carbon-based supports were demonstrated in the case of ultrasmall iridium nanoparticles supported on N-doped graphene, reported by Wu et al [57]. They compared the electrocatalytic performance of Ir nanoparticles (1.81 ± 0.55 nm) supported on graphene (obtained by hydrothermal treatment, followed by annealing at 700 • C -Ir@G-750), Ir nanoparticles (2.18 ± 0.92 nm) supported on N-doped graphene (prepared by annealing polydopamine modified graphene oxide with Ir 3+ at 750 • C -Ir@N-G-750 • C), and commercial Ir/C and Pt/C.…”

Section: Supported Metallic Nanoparticlesmentioning

confidence: 92%

Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

et al. 2020

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Hydrogen evolution reaction (HER) is one of the most important reactions in electrochemistry. This is not only because it is the simplest way to produce high purity hydrogen and the fact that it is the side reaction in many other technologies. HER actually shaped current electrochemistry because it was in focus of active research for so many years (and it still is). The number of catalysts investigated for HER is immense, and it is not possible to overview them all. In fact, it seems that the complexity of the field overcomes the complexity of HER. The aim of this review is to point out some of the latest developments in HER catalysis, current directions and some of the missing links between a single crystal, nanosized supported catalysts and recently emerging, single-atom catalysts for HER.

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Metal-support interaction boosted electrocatalysis of ultrasmall iridium nanoparticles supported on nitrogen doped graphene for highly efficient water electrolysis in acidic and alkaline media

Cited by 174 publications

References 59 publications

Pt Single Atoms Supported on N‐Doped Mesoporous Hollow Carbon Spheres with Enhanced Electrocatalytic H₂‐Evolution Activity

Pt Single Atoms Supported on N‐Doped Mesoporous Hollow Carbon Spheres with Enhanced Electrocatalytic H₂‐Evolution Activity

Strong Electronic Interaction Enhanced Electrocatalysis of Metal Sulfide Clusters Embedded Metal–Organic Framework Ultrathin Nanosheets toward Highly Efficient Overall Water Splitting

Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

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Metal-support interaction boosted electrocatalysis of ultrasmall iridium nanoparticles supported on nitrogen doped graphene for highly efficient water electrolysis in acidic and alkaline media

Cited by 174 publications

References 59 publications

Pt Single Atoms Supported on N‐Doped Mesoporous Hollow Carbon Spheres with Enhanced Electrocatalytic H2‐Evolution Activity

Pt Single Atoms Supported on N‐Doped Mesoporous Hollow Carbon Spheres with Enhanced Electrocatalytic H2‐Evolution Activity

Strong Electronic Interaction Enhanced Electrocatalysis of Metal Sulfide Clusters Embedded Metal–Organic Framework Ultrathin Nanosheets toward Highly Efficient Overall Water Splitting

Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

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Pt Single Atoms Supported on N‐Doped Mesoporous Hollow Carbon Spheres with Enhanced Electrocatalytic H₂‐Evolution Activity

Pt Single Atoms Supported on N‐Doped Mesoporous Hollow Carbon Spheres with Enhanced Electrocatalytic H₂‐Evolution Activity