Emerging interstitial/substitutional modification of Pd-based nanomaterials with nonmetallic elements for electrocatalytic applications

Zhang, Chenghui; Li, Wendong; Chen, Chuanxia; Ni, Pengjuan; Wang, Bo; Jiang, Yuanyuan; Lu, Yizhong

doi:10.1039/d1nr06570j

Cited by 19 publications

(17 citation statements)

References 154 publications

(226 reference statements)

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“…Introducing light elements (e.g., B, C, N in the p-block group) into the metal lattice is an important method to improve the catalytic activity of transition metals. [64][65][66] However, due to the small size, low content and disordered distribution of these light atoms, it is often difficult to reveal their alloying effects on catalytic performances. The Pd-B alloy represents one of the most typical light element-doped metal catalytic systems, and has been widely studied in many catalytic reactions such as selective hydrogenation reactions of alkynes, formic acid (HCOOH) and hydrous hydrazine (H 2 NNH 2 ÁH 2 O) decompositions.…”

Section: P-block-element Doped Metal Catalystsmentioning

confidence: 99%

d–sp orbital hybridization: a strategy for activity improvement of transition metal catalysts

Chen

Wang

et al. 2022

Chem. Commun.

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Section: P-block-element Doped Metal Catalystsmentioning

confidence: 99%

d–sp orbital hybridization: a strategy for activity improvement of transition metal catalysts

Chen

Wang

et al. 2022

Chem. Commun.

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“…It is not clear that to what extent B-doping may affect the Pt lattice and the electronic structure of surface Pt sites and thereby resulting in the activity and durability of a Pt–B catalyst . The first report on the synthesis and application of B-doped PGMs in energy electrocatalysis is on a Pd–B/C catalyst for the formic acid oxidation reaction by this group in 2009 and has triggered a series of relevant research works. − Despite that Pd–B/C was later found to exhibit an improved ORR activity relative to Pd/C, , in general, Pd-based catalysts (including Pd–B/C) are far inferior to Pt-based catalysts in terms of overall ORR performance, in particular, durability in acidic media, and are thus not competent in PEMFC’s application. Given the similar lattice structure of Pt and Pd, it is of great interest to explore the prospect of developing the B-doped Pt catalyst (Pt–B/C) with a more effective ORR performance than the Pt/C benchmark catalyst in PEMFCs.…”

Section: Introductionmentioning

confidence: 99%

Interstitial B-Doping in Pt Lattice to Upgrade Oxygen Electroreduction Performance

et al. 2022

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The dissolution of M in currently popular Pt–M alloy catalysts (M = Co, Ni, and Fe) during the oxygen reduction reaction (ORR) may deter their wide application in proton exchange membrane fuel cells (PEMFCs). In this work, interstitial B-doping in the Pt lattice is instead used to design a durable and active ORR catalyst, by taking advantage of its unique regulation of the electronic structure of surface Pt sites. 3 nm Pt–B nanoparticles on carbon black (Pt–B/C) are obtained using dimethylamine borane (DMAB) as a reductant and the B source in a mixed H2O–ethylene glycol precursor solution. The formation of the B-doped Pt catalyst is verified by inductively coupled plasma-atomic emission spectrometry, X-ray diffractometry, and spherical aberration-corrected scanning transmission electron microscopy. Both half-cell and single-cell tests indicate that the as-synthesized Pt–B/C catalyst outperforms the commercial Pt/C(com) in terms of activity and durability. In particular, the Pt–B/C-based PEMFC exhibits an initial maximum power density 1.24 times as high as the Pt/C(com)-based one under otherwise same conditions, with a 15% decay for the former versus a 45% decay for the latter after 30 000 cycles of the accelerated degradation test (ADT). Comparative DFT calculations on B-doped and undoped Pt(111) surfaces reveal that the lowered Pt d-band center and the strong interaction of Pt–B bonding weaken the binding of OH and O species to surface Pt sites and lessen oxidative disruption of surface Pt atoms. This interstitial metalloid doping in conjunction with the simple and scalable synthesis protocol enables the Pt–B/C to be a competitive ORR catalyst for the PEMFCs.

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“…Chen et al introduce the development of nonmetals-doped precious metals, but to some extent, it occupies the space for a detailed understanding of nonmetal-doped Pd-based catalysts [25] . Other targeted reviews on nonmetaldoped Pd-based catalysts did not discuss all common nonmetals (e.g., H, B, C, N, O, P, and S) [26,27] .…”

Section: Introductionmentioning

confidence: 99%

Recent advances in nonmetallic modulation of palladium-based electrocatalysts

Cai-kang¹,

Jiang²,

Wang³

et al. 2023

Chem Synth

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Modulating the electrocatalytic performance of Palladium (Pd) with nonmetallic elements (e.g., H, B, C, N, O, P and S) has gained ever-increasing attention since their introduction has been proven to effectively modulate the 3d-electronic configuration and subsurface properties of Pd. In this review, the most advanced nonmetal-modified Pd-based catalysts are classified according to the different doped atoms (i.e., hydrides, borides, carbides, nitrides, oxides, phosphides and sulfides) and critically reviewed to emphasize the roles of nonmetallic elements doping on various electrocatalytic reactions. In each section, the synthetic strategies developed to incorporate nonmetals are discussed in detail. Furthermore, the optimized approaches of nonmetals-doped Pd-based catalysts and corresponding electrocatalytic enhancement mechanisms were also discussed clearly. Finally, the current challenges and future perspectives regarding nonmetal-modified Pd-based nanocatalysts are also outlined.

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Emerging interstitial/substitutional modification of Pd-based nanomaterials with nonmetallic elements for electrocatalytic applications

Abstract: Palladium (Pd)-based nanomaterials have been identified as potential candidates for various types of electrocatalytic reactions, but most of them typically exhibit unsatisfactory performance. Recently, extensive theoretical and experimental studies have...

Cited by 19 publications

References 154 publications

d–sp orbital hybridization: a strategy for activity improvement of transition metal catalysts

d–sp orbital hybridization: a strategy for activity improvement of transition metal catalysts

Interstitial B-Doping in Pt Lattice to Upgrade Oxygen Electroreduction Performance

Recent advances in nonmetallic modulation of palladium-based electrocatalysts

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