One-step synthesis of the PdPt bimetallic nanodendrites with controllable composition for methanol oxidation reaction

Zhang, Yuan; Zhang, Jinfeng; Chen, Zelin; Liu, Yunwei; Zhang, Mengmeng; Han, Xiaopeng; Zhong, Cheng; Hu, Wenbin; Deng, Yida

doi:10.1007/s40843-017-9157-9

Cited by 39 publications

(23 citation statements)

References 48 publications

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“…However, the electrochemical hydrogen production is seriously limited by the large overpotential and sluggish kinetics of both cathodic hydrogen evolution reaction (HER) and anodic oxygen evolution reaction (OER) . At present, noble metals (e.g., Pt, Ir, and Ru) based catalysts are regarded as the best electrocatalysts, but their scarcity, high cost, poor stability, and single functionalization for only HER (e.g., Pt) or OER (e.g., Ir, Ru) prevent their widespread commercialization . Hence, it is highly desirable to develop low‐cost and efficient bifunctional electrocatalysts for overall water splitting …”

Section: Introductionmentioning

confidence: 99%

In Situ Fabrication of Heterostructure on Nickel Foam with Tuned Composition for Enhancing Water‐Splitting Performance

Zheng

Zhang

Liu

et al. 2018

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for fossil fuels. Electrocatalytic water splitting is a promising and environmentally friendly approach for the generation of hydrogen gas with high quality and efficiency. [1][2][3][4] However, the electrochemical hydrogen production is seriously limited by the large overpotential and sluggish kinetics of both cathodic hydrogen evolution reaction (HER) and anodic oxygen evolution reaction (OER). [5][6][7] At present, noble metals (e.g., Pt, Ir, and Ru) based catalysts are regarded as the best electrocatalysts, but their scarcity, high cost, poor stability, and single functionalization for only HER (e.g., Pt) or OER (e.g., Ir, Ru) prevent their widespread commercialization. [8][9][10] Hence, it is highly desirable to develop low-cost and efficient bifunctional electrocatalysts for overall water splitting. [11][12][13] Transition metal chalcogenides (TMCs, M = Fe, Co, Ni, Mn, etc., and C = S, Se) have been extensively explored as electroactive materials to promote HER and OER processes owing to the advantages of cost-effective, high abundance, and intrinsically metallic properties. [14][15][16][17][18][19][20] Recently, the design strategies of highly active TMCs electrocatalysts are mainly focused on following principles: (i) anchoring catalysts on conductive substrates to enable a highly dispersed active species and favor the electron transfer; (ii) engineering micro-nanostructures to Exploiting economical and high-performance bifunctional electrocatalysts toward hydrogen and oxygen evolution reactions (HER/OER) is at the heart of overall water splitting in large-scale application. Herein, an in situ and stepwise strategy for synthesizing core-shell Ni 3 (S 1−x Se x ) 2 @NiOOH (0 ≤ x ≤ 1) nanoarray heterostructures on nickel foam with tailored compositions for enhancing water-splitting performance is reported. A series of Ni 3 (S 1−x Se x ) 2 nanostructures is firstly grown on nickel foam via an in situ reaction in a heated polyol solution system. Ni 3 (S 1−x Se x ) 2 @NiOOH nanocomposites are subsequently prepared via electrochemical oxidation and the oxidation degree is systematically investigated by varying the oxidation time. Benefitting from the vertical standing architecture, abundant exposed active sites, and synergetically interfacial enhancement, Ni 3 (S 0.25 Se 0.75 ) 2 @NiOOH heterojunctions with electrochemical polarization for 8 h exhibit superior HER and OER behaviors, achieving a water-splitting current density of 10 mA cm −2 at a small overpotential of 320 mV as well as boosted reaction kinetics and long-term stability. This work should shed light on the controllable synthesis of metal-based hybrid materials and provide a promising direction for developing the highest-performing electrocatalysts based on interfacial and heterostructural regulation for advanced electrochemical energy conversion technologies. www.small-journal.com electrode to receive stable signals. The HER polarization profiles were performed from 0.1 to −0.8 V, while the OER from 1.0 to 2.0 V at a scan speed of 5 mV s −1 . Elect...

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Section: Introductionmentioning

confidence: 99%

In Situ Fabrication of Heterostructure on Nickel Foam with Tuned Composition for Enhancing Water‐Splitting Performance

Zheng

Zhang

Liu

et al. 2018

Small

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111

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“…X‐ray diffraction (XRD) measurements were carried out to determine the crystallographic structure of bimetallic nanoparticles (BNPs). XRD patterns of PtPd and PdPt BNPs showed the same appearance and shape due to the slight difference between the lattice parameter of Pt and Pd structures [22–24] . Figure S1 shows the XRD patterns of the prepared Pt and PtPd bimetallic nanoparticles, indexed with the face‐centered cubic (fcc) structure of Pt (JCPDF 04‐0802).…”

Section: Resultsmentioning

confidence: 93%

Characterization and Electrocatalytic Features of PtPd and PdPt Bimetallic Nanoparticles for Methanol Electro‐oxidation

et al. 2021

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This work entails a comprehensive study on PtPd, and PdPt bimetallic nanoparticles (BNPs) supported on Vulcan XC‐72 carbon towards methanol oxidation reaction (MOR) in alkaline media. BNPs with different compositions were synthesized using a flexible and facile polyol method through a heterogeneous nucleation process. The homogeneous BNPs were characterized by SEM, XRD, HR‐TEM and XRF to analyse the crystallographic structure and verified the controlled characteristics. The electrochemical properties and stability were investigated using cyclic voltammetry and chronoamperometry, respectively. As a consequence of the electrocatalysts’ controlled composition, a direct correlation between the catalytic activity and the shift in the PtO/PdO reduction potential was observed. The optimal electrocatalyst that overcomes the catalytic performance of PdPt structure, also showed an improvement in the CO anti‐poisoning ability was PtPd (1 : 0.5)/C with a current density of 12.56‐fold higher than of commercial Pt/C. This study about different Pt/Pd structures may provide valuable information for developing new and efficient electrocatalysts towards MOR.

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“…[1][2][3] Among the cleanest routes to produce energy is through the production of hydrogen, ideally through water splitting. [1][2][3] Among the cleanest routes to produce energy is through the production of hydrogen, ideally through water splitting.…”

Section: Introductionmentioning

confidence: 99%

“…To day there is unprecedented demand for clean,e fficient, and economic production of energy. [1][2][3] Among the cleanest routes to produce energy is through the production of hydrogen, ideally through water splitting. The oxygen evolution reaction (OER), given by 2H 2 O!4H + + O 2 + 4e À (E 0 = 1.23 Vv s. RHE), is ac rucial half reaction in overall water splitting (2 H 2 O!2H 2 + O 2 , DE = 01.23 V).…”

Section: Introductionmentioning

confidence: 99%

Nickel‐Based Transition Metal Nitride Electrocatalysts for the Oxygen Evolution Reaction

et al. 2019

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Electrocatalysis is an efficient and promising means of energy conversion, with minimal environmental footprint. To enhance reaction rates, catalysts are required to minimize overpotential. Alternatives to noble metal electrocatalysts are essential to address these needs on a large scale. In this context, transition metal nitride (TMN) nanoparticles have attracted much attention owing to their high catalytic activity, distinctive electronic structures, and enhanced surface morphologies. Nickel‐based materials are an ideal choice for electrocatalysts given nickel's abundance and low cost in comparison to noble metals. In this Minireview, advancements made specifically in Ni‐based binary and ternary TMNs as electrocatalysts for the oxygen evolution reaction (OER) are critically evaluated. When used as OER electrocatalysts, Ni‐based nanomaterials with 3 D architectures on a suitable support (e.g., a foam support) speed up electron transfer as a result of well‐oriented crystal structures and also assist intermediate diffusion, during reaction, of evolved gases. 2 D Ni‐based nitride sheet materials synthesized without supports usually perform better than 3 D supported electrocatalysts. The focus of this Minireview is a systematic description of OER activity for state‐of‐the‐art Ni‐based nitrides as nanostructured electrocatalysts.

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One-step synthesis of the PdPt bimetallic nanodendrites with controllable composition for methanol oxidation reaction

Cited by 39 publications

References 48 publications

In Situ Fabrication of Heterostructure on Nickel Foam with Tuned Composition for Enhancing Water‐Splitting Performance

In Situ Fabrication of Heterostructure on Nickel Foam with Tuned Composition for Enhancing Water‐Splitting Performance

Characterization and Electrocatalytic Features of PtPd and PdPt Bimetallic Nanoparticles for Methanol Electro‐oxidation

Nickel‐Based Transition Metal Nitride Electrocatalysts for the Oxygen Evolution Reaction

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