Near-monolayer platinum shell on core-shell nanocatalysts for high-performance direct methanol fuel cell

Jang Jung Wang; Yu Ting Liu; I. Li Chen; Yaw Wen Yang; Tsung Kuang Yeh; Chih Hao Lee; Chi Chang Hu; Ten-Chin Wen; Tsan Yao Chen; Tsang Lang Lin

doi:10.1021/jp408012d

Near-monolayer platinum shell on core-shell nanocatalysts for high-performance direct methanol fuel cell

Jang Jung Wang, Yu Ting Liu, I. Li Chen, Yaw Wen Yang, Tsung Kuang Yeh, Chih Hao Lee, Chi Chang Hu, Ten-Chin Wen, Tsan Yao Chen, Tsang Lang Lin

Department of Chemical Engineering

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

26 Citations (Scopus)

Abstract

We investigate the Ru_core-Pt_shell nanoparticles (NPs) with near-monolayer thick shell atoms as the electrocatalysts at anode in the direct methanol fuel cell (DMFC). The results of X-ray diffraction indicate that its crystal structure experienced a compressive strain in Pt shell region. The shell thickness of Ru_core-Pt_shell NPs was determined to be 1.5 atomic layers by small-angle X-ray scattering by using a core-shell scattering model, and the surface atomic morphology was illustrated via high-resolution transmission electron microscopy (HRTEM). Compared with the Pt NPs, the power density of DMFC with Ru_core-Pt_shell NPs was improved by ∼450% (from 17.1 to 92.8 mW cm^-2 mg^-1), and the open-circuit voltage was improved by 0.18 V (from 0.49 to 0.67 V). Our results fulfill the development of cost-effective DMFC with outstanding performance.

Original language	English
Pages (from-to)	2253-2262
Number of pages	10
Journal	Journal of Physical Chemistry C
Volume	118
Issue number	5
DOIs	https://doi.org/10.1021/jp408012d
Publication status	Published - 2014 Feb 6

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/jp408012d

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title = "Near-monolayer platinum shell on core-shell nanocatalysts for high-performance direct methanol fuel cell",

abstract = "We investigate the Rucore-Ptshell nanoparticles (NPs) with near-monolayer thick shell atoms as the electrocatalysts at anode in the direct methanol fuel cell (DMFC). The results of X-ray diffraction indicate that its crystal structure experienced a compressive strain in Pt shell region. The shell thickness of Rucore-Ptshell NPs was determined to be 1.5 atomic layers by small-angle X-ray scattering by using a core-shell scattering model, and the surface atomic morphology was illustrated via high-resolution transmission electron microscopy (HRTEM). Compared with the Pt NPs, the power density of DMFC with Rucore-Ptshell NPs was improved by ∼450% (from 17.1 to 92.8 mW cm-2 mg-1), and the open-circuit voltage was improved by 0.18 V (from 0.49 to 0.67 V). Our results fulfill the development of cost-effective DMFC with outstanding performance.",

author = "Wang, {Jang Jung} and Liu, {Yu Ting} and Chen, {I. Li} and Yang, {Yaw Wen} and Yeh, {Tsung Kuang} and Lee, {Chih Hao} and Hu, {Chi Chang} and Ten-Chin Wen and Chen, {Tsan Yao} and Lin, {Tsang Lang}",

year = "2014",

month = feb,

day = "6",

doi = "10.1021/jp408012d",

language = "English",

volume = "118",

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journal = "Journal of Physical Chemistry C",

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TY - JOUR

T1 - Near-monolayer platinum shell on core-shell nanocatalysts for high-performance direct methanol fuel cell

AU - Wang, Jang Jung

AU - Liu, Yu Ting

AU - Chen, I. Li

AU - Yang, Yaw Wen

AU - Yeh, Tsung Kuang

AU - Lee, Chih Hao

AU - Hu, Chi Chang

AU - Wen, Ten-Chin

AU - Chen, Tsan Yao

AU - Lin, Tsang Lang

PY - 2014/2/6

Y1 - 2014/2/6

N2 - We investigate the Rucore-Ptshell nanoparticles (NPs) with near-monolayer thick shell atoms as the electrocatalysts at anode in the direct methanol fuel cell (DMFC). The results of X-ray diffraction indicate that its crystal structure experienced a compressive strain in Pt shell region. The shell thickness of Rucore-Ptshell NPs was determined to be 1.5 atomic layers by small-angle X-ray scattering by using a core-shell scattering model, and the surface atomic morphology was illustrated via high-resolution transmission electron microscopy (HRTEM). Compared with the Pt NPs, the power density of DMFC with Rucore-Ptshell NPs was improved by ∼450% (from 17.1 to 92.8 mW cm-2 mg-1), and the open-circuit voltage was improved by 0.18 V (from 0.49 to 0.67 V). Our results fulfill the development of cost-effective DMFC with outstanding performance.

AB - We investigate the Rucore-Ptshell nanoparticles (NPs) with near-monolayer thick shell atoms as the electrocatalysts at anode in the direct methanol fuel cell (DMFC). The results of X-ray diffraction indicate that its crystal structure experienced a compressive strain in Pt shell region. The shell thickness of Rucore-Ptshell NPs was determined to be 1.5 atomic layers by small-angle X-ray scattering by using a core-shell scattering model, and the surface atomic morphology was illustrated via high-resolution transmission electron microscopy (HRTEM). Compared with the Pt NPs, the power density of DMFC with Rucore-Ptshell NPs was improved by ∼450% (from 17.1 to 92.8 mW cm-2 mg-1), and the open-circuit voltage was improved by 0.18 V (from 0.49 to 0.67 V). Our results fulfill the development of cost-effective DMFC with outstanding performance.

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JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 5

ER -

Near-monolayer platinum shell on core-shell nanocatalysts for high-performance direct methanol fuel cell

Abstract

All Science Journal Classification (ASJC) codes

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