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

28 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
General Energy
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 Wen, {Ten Chin} and Chen, {Tsan Yao} and Lin, {Tsang Lang}",

year = "2014",

month = feb,

day = "6",

doi = "10.1021/jp408012d",

language = "English",

volume = "118",

pages = "2253--2262",

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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