Surface-engineered mesoporous Pt nanodendrites with Ni dopant for highly enhanced catalytic performance in hydrogen evolution reaction

Li, Lu; Wang, Shan; Xiong, Laifei; Wang, Bin; Yang, Guang; Yang, Shengchun

doi:10.1039/c9ta02696g

Cited by 48 publications

(22 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Pt 4f X-ray photoelectron spectroscopy (XPS) spectrum of Pt@mh-3D MXene can be divided into two doublets at 71.15/74.45 and 71.89/75.51 eV for metallic Pt and Pt 2+ species, respectively (Figure 4e). [37] They are positively shifted by 0.72 eV to a higher binding energy relative to pure Pt. Accordingly, the O 1s XPS peak of Pt@mh-3D MXene is negatively shifted by 0.29 eV as compared to Pt-free mh-3D MXene (Figure 4f).…”

Section: Resultsmentioning

confidence: 98%

Multilevel Hollow MXene Tailored Low‐Pt Catalyst for Efficient Hydrogen Evolution in Full‐pH Range and Seawater

Xiu

Pei

Zhao

et al. 2020

Adv Funct Materials

178

View full text Add to dashboard Cite

Multilevel hollow structures provide a superior material platform to conventional designs for exceptional functionalities enabled by wide tailorability of interfacial properties and local microenvironments. Herein, a facile strategy is reported for tailoring the electrocatalytic performance of a low-Pt catalyst over a wide range of pH conditions using multilevel hollow MXene with sufficient diffusion channels, multiple reactive surface areas, and robust frameworks with high conductivity and hydrophilic and aggregation resistance. Their synergy with ultrafine Pt creates efficient multifunctional catalytic interfaces with high Pt utilization, and overall enhanced charge transport, H + /water adsorption activation, intermediate H binding, and ionic/mass exchange. The resultant catalyst fully exceeds the commercial 20% Pt/C by 10-20 folds in mass activity for hydrogen evolution through the full pH range. The highest mass activity of 12.94 A mg Pt −1 is achieved in an alkaline electrolyte with 1/8 Pt usage of 20% Pt/C. This catalyst also exhibits the best combination of high activity, long lifetime (250 h, 31 times of Pt/C), and nearly 100% Faradaic efficiency among 20% Pt/C (8 h) and documented electrocatalysts (10-100 h) for hydrogen production in natural seawater. This study offers an effective interface-engineering strategy to regulate electrocatalysis over broad chemical conditions to meet the complicated application criteria.

show abstract

Section: Resultsmentioning

confidence: 98%

Multilevel Hollow MXene Tailored Low‐Pt Catalyst for Efficient Hydrogen Evolution in Full‐pH Range and Seawater

Xiu

Pei

Zhao

et al. 2020

Adv Funct Materials

178

View full text Add to dashboard Cite

show abstract

“…6,7 However, the expensive cost and limited reserves of Pt have hindered the technological scalability of this option. 8,9 Consequently, alternatives to Pt electrodes are needed. Pt-based alloys 10 or earth-abundant non-Pt catalysts such as Fe-, 11,12 Ni-, [13][14][15][16] Co-, 17,18 Cu- 19 and Mo-based 20 materials have been widely studied.…”

Section: Introductionmentioning

confidence: 99%

Carbon quantum dots enhanced the activity for the hydrogen evolution reaction in ruthenium-based electrocatalysts

Wei

Wang

et al. 2020

Mater. Chem. Front.

117

View full text Add to dashboard Cite

show abstract

“…[33,34], controlling the morphology with special size and shape (sphere, cube, polyhedron, nanowire, nanorod, nanotube, etc.) [35][36][37][38][39], diminishing the geometric size from submicron to nano-scale or even down to single atom level, etc. [40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Platinum Atoms and Nanoparticles Embedded Porous Carbons for Hydrogen Evolution Reaction

Kang

Wang

et al. 2020

Materials

View full text Add to dashboard Cite

Due to the growing demand for energy and imminent environmental issues, hydrogen energy has attracted widespread attention as an alternative to traditional fossil energy. Platinum (Pt) catalytic hydrogen evolution reaction (HER) is a promising technology to produce hydrogen because the consumed electricity can be generated from renewable energy. To overcome the high cost of Pt, one effective strategy is decreasing the Pt nanoparticle (NP) size from submicron to nano-scale or even down to single atom level for efficient interacting water molecules. Herein, atomically dispersed Pt and ultra-fine Pt NPs embedded porous carbons were prepared through the pyrolysis of Pt porphyrin-based conjugated microporous polymer. As-prepared electrocatalyst exhibit high HER activity with overpotential of down to 31 mV at 10 mA cm−2, and mass activity of up to 1.3 A mgPt−1 at overpotential of 100 mV, which is double of commercial Pt/C (0.66 A mgPt−1). Such promising performance can be ascribed to the synergistic effect of the atomically dispersed Pt and ultra-fine Pt NPs. This work provides a new strategy to prepare porous carbons with both atomically dispersed metal active sites and corresponding metal NPs for various electrocatalysis, such as oxygen reduction reaction, carbon dioxide reduction, etc.

show abstract

Surface-engineered mesoporous Pt nanodendrites with Ni dopant for highly enhanced catalytic performance in hydrogen evolution reaction

Abstract: Hydrogen production by electrolyzing water is expected to be one of the most effective strategies to realize the comprehensive utilization of clean energy and thus alleviate the growing environmental problems.

Cited by 48 publications

References 53 publications

Multilevel Hollow MXene Tailored Low‐Pt Catalyst for Efficient Hydrogen Evolution in Full‐pH Range and Seawater

Multilevel Hollow MXene Tailored Low‐Pt Catalyst for Efficient Hydrogen Evolution in Full‐pH Range and Seawater

Carbon quantum dots enhanced the activity for the hydrogen evolution reaction in ruthenium-based electrocatalysts

Platinum Atoms and Nanoparticles Embedded Porous Carbons for Hydrogen Evolution Reaction

Contact Info

Product

Resources

About