Morphing Mncore@Ptshell nanoparticles: Effects of core structure on the ORR performance of Pt shell

Matin, Md. Abdul; Lee, Junsu; Kim, Gwan Woo; Park, Hyun-Uk; Jun, Byeong; Shastri, S. D.; Kim, Gunn; Kim, Young-Dok; Kwon, Young‐Uk; Petkov, Valeri

doi:10.1016/j.apcatb.2020.118727

Cited by 70 publications

(25 citation statements)

References 49 publications

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“…For example, Sun et al 81 compared the activity by precisely adjusting the size of Pd core and the thickness of FePt shell. Petkov et al 82 synthesized Mn core of about 3 nm to adjust the thickness of Pt shell. Electrocatalytic measurement showed that the activity of ORR was 14–16 times higher than that of pure Pt.…”

Section: Structural Influencementioning

confidence: 99%

Recent advances in Pt-based electrocatalysts for PEMFCs

Zhang

Yang

et al. 2021

RSC Adv.

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Section: Structural Influencementioning

confidence: 99%

Recent advances in Pt-based electrocatalysts for PEMFCs

Zhang

Yang

et al. 2021

RSC Adv.

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“…The engineering also obeys the volcano-type principle between catalytic activity and d-band center energy of active sites [75,76]. According to different adjusted factors, the local structure engineering in PMC mainly contains three different methods: the modulation of coordination number, the introduction of bonding distortion and synergy effect by ligands [77][78][79].…”

Section: Local Structure Engineering In Precious Metal Catalystsmentioning

confidence: 99%

Local structure engineering for active sites in fuel cell electrocatalysts

et al. 2020

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In this review, we surveyed the significance of local structure engineering on electrocatalysts and electrodes for the performance of oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). Both on precious metal catalysts (PMC) and non-precious metal catalysts (NPMC), the main methods to modulate local structure of active sites have been summarized. By change of atomic coordination, modulation of bonding distortion and synergy effect from hierarchical structure, local structure engineering has influence on the intrinsic activity and stability of electrocatalysts. Moreover, we emphasized the intimate correlation between lyophobicity of electrocatalysts and membrane electrodes by local structure engineering. Our review aimed to inspire the exploration of advanced electrocatalysts and mechanism study for PEMFCs based on local structure engineering. local structure engineering, proton exchange membrane fuel cells, oxygen reduction reaction, active sites

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“…To date, platinum (Pt)-based catalysts are the benchmark electrocatalysts, but their large-scale application suffers from high cost, supply scarcity, and poor stability. [7][8][9] Hence, plenty of work has been done on exploring high-activity and cheap Pt-free electrocatalysts, including, for example, metal carbides, [10][11][12][13][14][15] oxides, [16][17][18][19][20] and nitrides. [21][22][23][24][25] Among such catalysts, FeÀ NÀ C materials exhibit the most outstanding intrinsic ORR activity in both alkaline and acid electrolytes.…”

Section: Introductionmentioning

confidence: 99%

“…However, the oxygen reduction reaction (ORR) occurring on the cathode possesses sluggish kinetics, resulting in low efficiency of devices. To date, platinum (Pt)‐based catalysts are the benchmark electrocatalysts, but their large‐scale application suffers from high cost, supply scarcity, and poor stability [7–9] . Hence, plenty of work has been done on exploring high‐activity and cheap Pt‐free electrocatalysts, including, for example, metal carbides, [10–15] oxides, [16–20] and nitrides [21–25] .…”

Section: Introductionmentioning

confidence: 99%

Space‐Confined Anchoring of Fe−N_x on Concave N‐Doped Carbon Cubes for Catalyzing Oxygen Reduction

et al. 2022

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Carbon-based electrocatalysts with atomically dispersed FeÀ NÀ C display promising performance for oxygen reduction reaction (ORR) amongst non-precious electrocatalysts. Nonetheless, increasing the number and utilization of FeÀ NÀ C active sites is challenging. Designing morphologies and adjusting the pore structure of carbon-based electrocatalysts would boost the mass transfer, enhance the utilization of the active sites, and increase the overall ORR performance. In this work, a concave N-doped carbon cubes structure adorned with highly external FeÀ N x was designed and produced by the space-confined induced strategy. The optimal electrocatalyst revealed excellent ORR activity in both alkaline and acidic electrolytes, with halfwave potentials of 0.86 and 0.75 V, respectively. The superior performance arose from its unique concave structure, possessing more accessible active sites with improved intrinsic activity, which holds promising potential for preparing advanced ORR electrocatalysts.

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Morphing Mncore@Ptshell nanoparticles: Effects of core structure on the ORR performance of Pt shell

Cited by 70 publications

References 49 publications

Recent advances in Pt-based electrocatalysts for PEMFCs

Recent advances in Pt-based electrocatalysts for PEMFCs

Local structure engineering for active sites in fuel cell electrocatalysts

Space‐Confined Anchoring of Fe−N_x on Concave N‐Doped Carbon Cubes for Catalyzing Oxygen Reduction

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Morphing Mncore@Ptshell nanoparticles: Effects of core structure on the ORR performance of Pt shell

Cited by 70 publications

References 49 publications

Recent advances in Pt-based electrocatalysts for PEMFCs

Recent advances in Pt-based electrocatalysts for PEMFCs

Local structure engineering for active sites in fuel cell electrocatalysts

Space‐Confined Anchoring of Fe−Nx on Concave N‐Doped Carbon Cubes for Catalyzing Oxygen Reduction

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Space‐Confined Anchoring of Fe−N_x on Concave N‐Doped Carbon Cubes for Catalyzing Oxygen Reduction