Local heterojunctions of atomic Pt clusters boost the oxygen reduction activity of Rucore@Pdshell nanocrystallites

Jeng Han Wang; Kuan Wen Wang; Tian Lin Chen; Chia Hsin Wang; Yu Ming Huang; Yang Yang Hsu; Tsan Yao Chen

doi:10.1039/C6TA06995A

Local heterojunctions of atomic Pt clusters boost the oxygen reduction activity of Rucore@Pdshell nanocrystallites

Jeng Han Wang, Kuan Wen Wang^*, Tian Lin Chen, Chia Hsin Wang, Yu Ming Huang, Yang Yang Hsu, Tsan Yao Chen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Ru-Pd nanoparticles (NPs) with Pt atomic cluster modification were synthesized using polyol reactions with a sequence design. Such modification resulted in the formation of Ru in the inner core and Pd on the outer shell structure (Rucore-Pdshell) via transmetalation between the Pt ion and Pd atom followed by thermal reduction. The Pt modified Rucore-Pdshell NPs improve the on-set potential by 0.041 volt and reduce Pt loading to less than ∼2%, as compared with that of carbon supported Pt NPs. For the optimum case, the MA (current degradation) of Ru-Pd NPs is improved (suppressed) by ∼345% (18.1%) in the accelerated degradation test (ADT) at 0.85 volt (vs. RHE) for 5000 cycles by intercalating Pt clusters (2 to 9 at%) in the NP surface. These improvements are attributed to the electron localization and reinforcement by surface Pt clusters, which facilitated the oxygen reduction activity and chemical durability of NPs.

Original language	English
Pages (from-to)	17848-17856
Number of pages	9
Journal	Journal of Materials Chemistry A
Volume	4
Issue number	45
DOIs	https://doi.org/10.1039/C6TA06995A
Publication status	Published - 2016
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

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10.1039/C6TA06995A

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title = "Local heterojunctions of atomic Pt clusters boost the oxygen reduction activity of Rucore@Pdshell nanocrystallites",

abstract = "Ru-Pd nanoparticles (NPs) with Pt atomic cluster modification were synthesized using polyol reactions with a sequence design. Such modification resulted in the formation of Ru in the inner core and Pd on the outer shell structure (Rucore-Pdshell) via transmetalation between the Pt ion and Pd atom followed by thermal reduction. The Pt modified Rucore-Pdshell NPs improve the on-set potential by 0.041 volt and reduce Pt loading to less than ∼2%, as compared with that of carbon supported Pt NPs. For the optimum case, the MA (current degradation) of Ru-Pd NPs is improved (suppressed) by ∼345% (18.1%) in the accelerated degradation test (ADT) at 0.85 volt (vs. RHE) for 5000 cycles by intercalating Pt clusters (2 to 9 at%) in the NP surface. These improvements are attributed to the electron localization and reinforcement by surface Pt clusters, which facilitated the oxygen reduction activity and chemical durability of NPs.",

author = "Wang, {Jeng Han} and Wang, {Kuan Wen} and Chen, {Tian Lin} and Wang, {Chia Hsin} and Huang, {Yu Ming} and Hsu, {Yang Yang} and Chen, {Tsan Yao}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2016",

doi = "10.1039/C6TA06995A",

language = "English",

volume = "4",

pages = "17848--17856",

journal = "Journal of Materials Chemistry A",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Local heterojunctions of atomic Pt clusters boost the oxygen reduction activity of Rucore@Pdshell nanocrystallites

AU - Wang, Jeng Han

AU - Wang, Kuan Wen

AU - Chen, Tian Lin

AU - Wang, Chia Hsin

AU - Huang, Yu Ming

AU - Hsu, Yang Yang

AU - Chen, Tsan Yao

PY - 2016

Y1 - 2016

N2 - Ru-Pd nanoparticles (NPs) with Pt atomic cluster modification were synthesized using polyol reactions with a sequence design. Such modification resulted in the formation of Ru in the inner core and Pd on the outer shell structure (Rucore-Pdshell) via transmetalation between the Pt ion and Pd atom followed by thermal reduction. The Pt modified Rucore-Pdshell NPs improve the on-set potential by 0.041 volt and reduce Pt loading to less than ∼2%, as compared with that of carbon supported Pt NPs. For the optimum case, the MA (current degradation) of Ru-Pd NPs is improved (suppressed) by ∼345% (18.1%) in the accelerated degradation test (ADT) at 0.85 volt (vs. RHE) for 5000 cycles by intercalating Pt clusters (2 to 9 at%) in the NP surface. These improvements are attributed to the electron localization and reinforcement by surface Pt clusters, which facilitated the oxygen reduction activity and chemical durability of NPs.

AB - Ru-Pd nanoparticles (NPs) with Pt atomic cluster modification were synthesized using polyol reactions with a sequence design. Such modification resulted in the formation of Ru in the inner core and Pd on the outer shell structure (Rucore-Pdshell) via transmetalation between the Pt ion and Pd atom followed by thermal reduction. The Pt modified Rucore-Pdshell NPs improve the on-set potential by 0.041 volt and reduce Pt loading to less than ∼2%, as compared with that of carbon supported Pt NPs. For the optimum case, the MA (current degradation) of Ru-Pd NPs is improved (suppressed) by ∼345% (18.1%) in the accelerated degradation test (ADT) at 0.85 volt (vs. RHE) for 5000 cycles by intercalating Pt clusters (2 to 9 at%) in the NP surface. These improvements are attributed to the electron localization and reinforcement by surface Pt clusters, which facilitated the oxygen reduction activity and chemical durability of NPs.

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U2 - 10.1039/C6TA06995A

DO - 10.1039/C6TA06995A

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JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 45

ER -

Local heterojunctions of atomic Pt clusters boost the oxygen reduction activity of Rucore@Pdshell nanocrystallites

Abstract

ASJC Scopus subject areas

UN SDGs

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