Ultrathin AgPt alloy nanorods as low-cost oxygen reduction reaction electrocatalysts in proton exchange membrane fuel cells

Research output: Contribution to journalArticlepeer-review

Standard

Ultrathin AgPt alloy nanorods as low-cost oxygen reduction reaction electrocatalysts in proton exchange membrane fuel cells. / Fidiani, Elok; Thirunavukkarasu, Gnanavel; Li, Yang; Chiu, Yu-Lung; Du, Shangfeng.

In: Journal of Materials Chemistry A, Vol. 8, No. 23, 19.05.2020, p. 11874-11883 .

Research output: Contribution to journalArticlepeer-review

Harvard

APA

Vancouver

Author

Bibtex

@article{02696242d230492a972d1d708093e9a8,
title = "Ultrathin AgPt alloy nanorods as low-cost oxygen reduction reaction electrocatalysts in proton exchange membrane fuel cells",
abstract = "The excellent catalytic activities and stability of one-dimensional (1D) AgPt alloy nanostructures have been well reported toward the oxygen reduction reaction (ORR). However, their real application in proton exchange membrane fuel cells (PEMFCs) is still highly challenging due to the great difficulties in their preparation and fabrication into practical electrodes. By a facile self-growth assisted reduction method, ultrathin single-crystal AgPt alloy nanorods (NRs) with a diameter of 3–4 nm are uniformly grown on a carbon support through a finely controlled ion reduction process tuning the nucleation and growth of Pt and Ag. Enhanced power performance is successfully demonstrated in the single-cell test. With 50 at% Ag, the AgPt NR/C electrode shows 1.16-fold power density and 1.22-fold mass activity compared to the Pt NR/C electrode, and 1.14 and 1.51-fold compared to the commercial Pt/C electrode, respectively. Comparable durability is also established in fuel cells by using the accelerated degradation test, although Ag is included.",
keywords = "Oxygen reduction reaction (ORR), proton exchange membrane fuel cell (PEMFC), Electrocatalyst, AgPt, One dimensional, 1D, Nanorod, Alloy, Formic acid, Single crystal, Nanowire",
author = "Elok Fidiani and Gnanavel Thirunavukkarasu and Yang Li and Yu-Lung Chiu and Shangfeng Du",
year = "2020",
month = may,
day = "19",
doi = "10.1039/D0TA02748K",
language = "English",
volume = "8",
pages = "11874--11883 ",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "Royal Society of Chemistry",
number = "23",

}

RIS

TY - JOUR

T1 - Ultrathin AgPt alloy nanorods as low-cost oxygen reduction reaction electrocatalysts in proton exchange membrane fuel cells

AU - Fidiani, Elok

AU - Thirunavukkarasu, Gnanavel

AU - Li, Yang

AU - Chiu, Yu-Lung

AU - Du, Shangfeng

PY - 2020/5/19

Y1 - 2020/5/19

N2 - The excellent catalytic activities and stability of one-dimensional (1D) AgPt alloy nanostructures have been well reported toward the oxygen reduction reaction (ORR). However, their real application in proton exchange membrane fuel cells (PEMFCs) is still highly challenging due to the great difficulties in their preparation and fabrication into practical electrodes. By a facile self-growth assisted reduction method, ultrathin single-crystal AgPt alloy nanorods (NRs) with a diameter of 3–4 nm are uniformly grown on a carbon support through a finely controlled ion reduction process tuning the nucleation and growth of Pt and Ag. Enhanced power performance is successfully demonstrated in the single-cell test. With 50 at% Ag, the AgPt NR/C electrode shows 1.16-fold power density and 1.22-fold mass activity compared to the Pt NR/C electrode, and 1.14 and 1.51-fold compared to the commercial Pt/C electrode, respectively. Comparable durability is also established in fuel cells by using the accelerated degradation test, although Ag is included.

AB - The excellent catalytic activities and stability of one-dimensional (1D) AgPt alloy nanostructures have been well reported toward the oxygen reduction reaction (ORR). However, their real application in proton exchange membrane fuel cells (PEMFCs) is still highly challenging due to the great difficulties in their preparation and fabrication into practical electrodes. By a facile self-growth assisted reduction method, ultrathin single-crystal AgPt alloy nanorods (NRs) with a diameter of 3–4 nm are uniformly grown on a carbon support through a finely controlled ion reduction process tuning the nucleation and growth of Pt and Ag. Enhanced power performance is successfully demonstrated in the single-cell test. With 50 at% Ag, the AgPt NR/C electrode shows 1.16-fold power density and 1.22-fold mass activity compared to the Pt NR/C electrode, and 1.14 and 1.51-fold compared to the commercial Pt/C electrode, respectively. Comparable durability is also established in fuel cells by using the accelerated degradation test, although Ag is included.

KW - Oxygen reduction reaction (ORR)

KW - proton exchange membrane fuel cell (PEMFC)

KW - Electrocatalyst

KW - AgPt

KW - One dimensional

KW - 1D

KW - Nanorod

KW - Alloy

KW - Formic acid

KW - Single crystal

KW - Nanowire

UR - http://www.scopus.com/inward/record.url?scp=85086987818&partnerID=8YFLogxK

U2 - 10.1039/D0TA02748K

DO - 10.1039/D0TA02748K

M3 - Article

VL - 8

SP - 11874

EP - 11883

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 23

ER -