Comparative study of PtNi nanowire array electrodes toward oxygen reduction reaction by half-cell measurement and PEMFC test

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Comparative study of PtNi nanowire array electrodes toward oxygen reduction reaction by half-cell measurement and PEMFC test. / Mardle, Peter; Thirunavukkarasu, Gnanavel; Guan, Shaoliang; Chiu, Yu-Lung; Du, Shangfeng.

In: ACS Applied Materials & Interfaces, Vol. 12, No. 38, 23.09.2020, p. 42832–42841.

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@article{820258ec87604fc3ad90529aa1d25eb3,
title = "Comparative study of PtNi nanowire array electrodes toward oxygen reduction reaction by half-cell measurement and PEMFC test",
abstract = "A clear understanding of catalytic activity enhancement mechanisms in fuel cell operation is necessary for a full degree translation of the latest generation of non-Pt/C fuel cell electrocatalysts into high-performance electrodes in proton-exchange membrane fuel cells (PEMFCs). In this work, PtNi nanowire (NW) array gas diffusion electrodes (GDEs) are fabricated from Pt NW arrays with Ni impregnation. A 2.84-fold improvement in the oxygen reduction reaction catalytic activity is observed for the PtNi NW array GDE (cf. the Pt NW array GDE) using half-cell GDE measurement in a 0.1 M HClO4 aqueous electrolyte at 25 °C, in comparison to only a 1.07-fold power density recorded in the PEMFC single-cell test. An ionomer is shown to significantly increase the electrochemically active surface area of the GDEs, but the PtNi NW array GDE suffers from Ni ion contamination at a high temperature, contributing to decreased catalytic activities and limited improvement in operating PEMFCs.",
keywords = "proton exchange membrane fuel cell (PEMFC), Electrode, Gas diffusion electrode (GDE), PtNi, Nanowire, Ionomer, Half-cell measurement, Interface",
author = "Peter Mardle and Gnanavel Thirunavukkarasu and Shaoliang Guan and Yu-Lung Chiu and Shangfeng Du",
year = "2020",
month = sep,
day = "23",
doi = "10.1021/acsami.0c11531",
language = "English",
volume = "12",
pages = "42832–42841",
journal = "ACS Applied Materials & Interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "38",

}

RIS

TY - JOUR

T1 - Comparative study of PtNi nanowire array electrodes toward oxygen reduction reaction by half-cell measurement and PEMFC test

AU - Mardle, Peter

AU - Thirunavukkarasu, Gnanavel

AU - Guan, Shaoliang

AU - Chiu, Yu-Lung

AU - Du, Shangfeng

PY - 2020/9/23

Y1 - 2020/9/23

N2 - A clear understanding of catalytic activity enhancement mechanisms in fuel cell operation is necessary for a full degree translation of the latest generation of non-Pt/C fuel cell electrocatalysts into high-performance electrodes in proton-exchange membrane fuel cells (PEMFCs). In this work, PtNi nanowire (NW) array gas diffusion electrodes (GDEs) are fabricated from Pt NW arrays with Ni impregnation. A 2.84-fold improvement in the oxygen reduction reaction catalytic activity is observed for the PtNi NW array GDE (cf. the Pt NW array GDE) using half-cell GDE measurement in a 0.1 M HClO4 aqueous electrolyte at 25 °C, in comparison to only a 1.07-fold power density recorded in the PEMFC single-cell test. An ionomer is shown to significantly increase the electrochemically active surface area of the GDEs, but the PtNi NW array GDE suffers from Ni ion contamination at a high temperature, contributing to decreased catalytic activities and limited improvement in operating PEMFCs.

AB - A clear understanding of catalytic activity enhancement mechanisms in fuel cell operation is necessary for a full degree translation of the latest generation of non-Pt/C fuel cell electrocatalysts into high-performance electrodes in proton-exchange membrane fuel cells (PEMFCs). In this work, PtNi nanowire (NW) array gas diffusion electrodes (GDEs) are fabricated from Pt NW arrays with Ni impregnation. A 2.84-fold improvement in the oxygen reduction reaction catalytic activity is observed for the PtNi NW array GDE (cf. the Pt NW array GDE) using half-cell GDE measurement in a 0.1 M HClO4 aqueous electrolyte at 25 °C, in comparison to only a 1.07-fold power density recorded in the PEMFC single-cell test. An ionomer is shown to significantly increase the electrochemically active surface area of the GDEs, but the PtNi NW array GDE suffers from Ni ion contamination at a high temperature, contributing to decreased catalytic activities and limited improvement in operating PEMFCs.

KW - proton exchange membrane fuel cell (PEMFC)

KW - Electrode

KW - Gas diffusion electrode (GDE)

KW - PtNi

KW - Nanowire

KW - Ionomer

KW - Half-cell measurement

KW - Interface

U2 - 10.1021/acsami.0c11531

DO - 10.1021/acsami.0c11531

M3 - Article

VL - 12

SP - 42832

EP - 42841

JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

SN - 1944-8244

IS - 38

ER -