Enhancement of the electrocatalytic oxygen reduction reaction on Pd3Pb ordered intermetallic catalyst in alkaline aqueous solutions

Jeevagan, Arockiam John; Gunji, Takao; Ando, Fuma; Tanabe, T.; Kaneko, Shingo; Matsumoto, Futoshi

doi:10.1007/s10800-016-0968-7

Cited by 18 publications

(13 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Enhanced catalytic performance have also been achieved in other ordered intermetallic Pd‐based compositions, including PdSn, PdPb, PdGa, PdZn, PdTe and PdCoAu,[49a] again demonstrating the advantage of ordered intermetallic nanomaterials in the application of electrocatalysis. Despite these impressive progress, there is no reports on the scalable application of Pd‐based catalytic materials in fuel cells to date, possibly suggesting that Pd still suffers from low activity as well as poor stability under the practical operation conditions.…”

Section: Ordered Intermetallic Pd‐based Catalystsmentioning

confidence: 99%

Tuning Multimetallic Ordered Intermetallic Nanocrystals for Efficient Energy Electrocatalysis

Luo

Sun

Wang

et al. 2016

Advanced Energy Materials

153

View full text Add to dashboard Cite

Ordered intermetallic alloys have attracted extensive attention as advanced electrocatalysts for polymer electrolyte membrane fuel cells (PEMFCs) reactions with much improved activity and stability. Here, latest progress in tuning intermetallic Pt‐ and Pd‐based nanocrystals with tunable morphology and structure for catalyzing both the cathodic reduction of oxygen and anodic oxidation of fuels (e.g., methanol, ethanol and formic acid) in PEMFCs is highlighted. Making/tuning interesting intermetallic PtM (M = Fe, Co, Pb, Cu, etc.)‐based nanocrystals for boosting oxygen reduction reaction with high activity and stability by using/controlling high‐temperature annealing treatment is discussed. In all the reported Pt‐based intermetallic nanocrystals, controlling the degree of ordering under the proper high temperature treatment is the key for achieving the optimized electrocatalysis. In order to search for cheaper catalysts, the progress on making Pd‐based intermetallic nanocrystals is also discussed. Furthermore, future research directions are proposed and discussed to further enhance the efficiency of such unique intermetallic multimetallic nanocatalysts. This report aims to demonstrate the potential of ordered intermetallic strategy for boosting electrocatalysis and stimulating more research efforts in this field.

show abstract

Section: Ordered Intermetallic Pd‐based Catalystsmentioning

confidence: 99%

Tuning Multimetallic Ordered Intermetallic Nanocrystals for Efficient Energy Electrocatalysis

Luo

Sun

Wang

et al. 2016

Advanced Energy Materials

153

View full text Add to dashboard Cite

show abstract

“…Although Pt-based catalysts are traditionally used for the fuel cell reactions, surface blocking by poisoning species and Pt dissolution limits the use of Pt-based electrocatalysts for practical applications. , Recently, Pd-based electrocatalysts have been suggested as alternative catalysts for Pt. ,, Although Pd-based catalysts do not suffer severe catalyst poisoning, the monometallic Pd still has poor electrocatalytic activity toward EGOR and ORR. In the case of EGOR, accumulation of carbonaceous species on the Pd-active surface significantly affects the electrocatalytic activity. ,− The d-band center of Pd is higher than that of Pt, and it is known to be poorly active toward oxidation and reduction reactions involving oxygen-containing species due to the strong adsorption of oxygenated species. , Alloying with transition metal shifts the d-band center of Pd downward through the Fermi level and weakens the bonding of surface-adsorbed species. − For instance, Pd–Ag, Pd–Cu, Pd–Sn, and Pd–Pb bimetallic alloys, bimodified Pd, PdCuNi, and PdCoCu trimetallic alloy electrocatalysts, etc., have been studied in the past for electrocatalytic applications. − Several Pd-based intermetallics have also shown promising activity toward cathodic reduction of oxygen , and anodic oxidation of fuel. , …”

Section: Introductionmentioning

confidence: 99%

“…26−28 For instance, Pd−Ag, Pd−Cu, Pd−Sn, and Pd−Pb bimetallic alloys, bimodified Pd, PdCuNi, and PdCoCu trimetallic alloy electrocatalysts, etc., have been studied in the past for electrocatalytic applications. 21−27 Several Pd-based intermetallics have also shown promising activity toward cathodic reduction of oxygen 29,30 and anodic oxidation of fuel. 31,32 In the recent past, the electrocatalytic activity of PdSn alloy and PdSn@Pt toward EGOR and ORR has been demonstrated.…”

Section: ■ Introductionmentioning

confidence: 99%

Bifunctional Electrocatalytic Activity of Ordered Intermetallics Based on Pd and Sn

et al. 2020

View full text Add to dashboard Cite

Structurally ordered intermetallic compounds are proven to be very promising for electrocatalysis owing to the homogeneous distribution of active sites, thermodynamic stability, and resistance toward surface rearrangement. Herein, we demonstrate a facile route for the synthesis of Sn-and Pd-based ordered intermetallics hybridized with reduced graphene oxide (rGO) and their bifunctional electrocatalytic performance toward oxygen reduction (ORR) and ethylene glycol oxidation reactions (EGOR). The coreduction of SnCl 2 and K 2 PdCl 4 in 1,5pentanediol in the presence of graphene oxide and the subsequent thermal annealing in an inert atmosphere affords rGO hybridized intermetallics of three phases: primitive orthorhombic PdSn, base-centered orthorhombic PdSn 2 , and hexagonal Pd 3 Sn 2 . The electrocatalytic performance of the hybrid intermetallics toward EGOR and ORR is evaluated in alkaline and acidic electrolytes. Among the three intermetallics, PdSn has excellent electrocatalytic performance toward EGOR and ORR. The PdSn/rGO hybrid catalyst outperforms the other two intermetallics toward EGOR in alkaline pH and ORR in acidic as well as alkaline pH in terms of onset potential and mass specific activity. The enhanced performance of PdSn/rGO catalyst is attributed to (i) a change in the Pd dband center, (ii) a Pd−Pd interatomic distance in a unit cell, and (iii) weak adsorption of in-situ-generated oxygen-containing intermediates species. The lattice strain due to the presence of dissimilarly sized Sn and Pd in a unit cell and the high oxophilicity of Sn downshifts the d-band center of Pd and facilitate the electron transfer kinetics. The catalyst support, rGO, prevents the unwanted aggregation of the active catalyst. The density functional theory calculations show that the oxygen-containing species weakly adsorb on the PdSn surface compared to the other intermetallics, supporting the high electrocatalytic activity of PdSn/rGO.

show abstract

“…This result indicates that the reaction selectivity in the photocatalysts depends on the co-catalyst. 16 Figure 3. Decomposition of acetic acid over Pt/WO3 and PtPb/WO3 with respect to time.…”

Section: Ptpb-loaded Wo 3 Photocatalystmentioning

confidence: 99%

“…We have developed several catalysts centered on nanosized intermetallic compounds, applied to fuel cell catalysts, [13][14][15][16][17][18] co-catalysts for photocatalysts, [19][20][21][22] electrochemical CO2 reduction reactions, 23 and plating films. 24 This comprehensive study reviews both theoretical calculations and experimental work on atomically ordered intermetallic compound catalysts for electronic energy conversion, photocatalysis, and conversion of CO2.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Ordered Intermetallic Compounds and Their Application in Electrocatalytic Reactions

Gunji

2021

Electrochemistry

Self Cite

View full text Add to dashboard Cite

Development of novel metal catalysts with high catalytic activity and selectivity is one of the most crucial research topics in the field of environmental and energy technologies.In general, the development of metal catalysts involves the addition of a second element to the active sites, such as Pt and Pd. Among the various metallic alloys, our focus has been specifically on a class of alloys, known as "intermetallic compounds," which exhibit long range atomic order. This study aims to review the electrooxidation of formic acid, oxygen reduction reactions using atomically ordered intermetallic compounds such as Pd3Pb and PdCu3, high selectivity or catalytic reaction selectivity associated with additive element species, and CO2 reduction reactions. Furthermore, various factors related to the electrocatalytic oxygen reduction reaction in acidic environments and electrooxidation of formic acid over Pd-based ordered intermetallic compounds have been discussed. The study also examines the photocatalytic activity of intermetallic co-catalysts toward the decomposition of volatile organic compounds using intermetallic co-catalysts. Finally, the electrocatalytic conversion of CO2 over Sn-and Pd-based electrocatalysts has been discussed. The review and the ensuing discussions are presented in the backdrop of previous studies conducted in this field and is anticipated to provide important insights for the accelerated development of highly active advanced catalysts.

show abstract

Enhancement of the electrocatalytic oxygen reduction reaction on Pd3Pb ordered intermetallic catalyst in alkaline aqueous solutions

Cited by 18 publications

References 46 publications

Tuning Multimetallic Ordered Intermetallic Nanocrystals for Efficient Energy Electrocatalysis

Tuning Multimetallic Ordered Intermetallic Nanocrystals for Efficient Energy Electrocatalysis

Bifunctional Electrocatalytic Activity of Ordered Intermetallics Based on Pd and Sn

Preparation of Ordered Intermetallic Compounds and Their Application in Electrocatalytic Reactions

Contact Info

Product

Resources

About