A silver-copper metallic glass electrocatalyst with high activity and stability comparable to Pt/C for zinc-air batteries

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A silver-copper metallic glass electrocatalyst with high activity and stability comparable to Pt/C for zinc-air batteries. / Wu, Xiaoqiang; Chen, Fuyi; Zhang, Nan; Qaseem, Adnan; Johnston, Roy L.

In: Journal of Materials Chemistry A, Vol. 4, No. 9, 29.01.2016, p. 3527-3537.

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@article{09966723a74543b3897c414a7852e83d,
title = "A silver-copper metallic glass electrocatalyst with high activity and stability comparable to Pt/C for zinc-air batteries",
abstract = "Highly active electrocatalysts with good long term stability are vital for the commercialization of metal air batteries and alkaline fuel cells which involve the oxygen reduction reaction (ORR) at the cathode end. Herein, we developed a pulsed laser deposition (PLD) technique for the precise fabrication of silver-copper metallic glass (AgCu-MG) electrocatalysts. This PLD technique provides excellent control over the surface microtopography along with high flexibility for the deposition of different compositions of silver-copper metallic glass electrocatalysts onto nickel foam. Among all investigated Ag-based catalysts, AgCu-MG catalysts exhibit high electrocatalytic activity with a half-wave potential of 0.67 V (vs. RHE) which can be in situ enhanced by dealloying treatment in N2 saturated 0.1 M KOH solution. In situ dealloying of the AgCu-MG provides exceptional ORR catalytic activity with a half-wave potential of 0.78 V (vs. RHE) at 1600 rpm, which is comparable to 0.81 V (vs. RHE) of commercial Pt/C-20%. The AgCu-MG electrocatalyst showed excellent long-term stability in rechargeable zinc-air batteries. After 1000 charge-discharge cycles at 20 mA cm-2, the discharge voltage of batteries was stable at 1.0 V demonstrating the potential application of AgCu-MG as an alternative to Pt/C-20% in zinc-air batteries and alkaline fuel cells.",
author = "Xiaoqiang Wu and Fuyi Chen and Nan Zhang and Adnan Qaseem and Johnston, {Roy L.}",
year = "2016",
month = jan,
day = "29",
doi = "10.1039/c5ta09266c",
language = "English",
volume = "4",
pages = "3527--3537",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "Royal Society of Chemistry",
number = "9",

}

RIS

TY - JOUR

T1 - A silver-copper metallic glass electrocatalyst with high activity and stability comparable to Pt/C for zinc-air batteries

AU - Wu, Xiaoqiang

AU - Chen, Fuyi

AU - Zhang, Nan

AU - Qaseem, Adnan

AU - Johnston, Roy L.

PY - 2016/1/29

Y1 - 2016/1/29

N2 - Highly active electrocatalysts with good long term stability are vital for the commercialization of metal air batteries and alkaline fuel cells which involve the oxygen reduction reaction (ORR) at the cathode end. Herein, we developed a pulsed laser deposition (PLD) technique for the precise fabrication of silver-copper metallic glass (AgCu-MG) electrocatalysts. This PLD technique provides excellent control over the surface microtopography along with high flexibility for the deposition of different compositions of silver-copper metallic glass electrocatalysts onto nickel foam. Among all investigated Ag-based catalysts, AgCu-MG catalysts exhibit high electrocatalytic activity with a half-wave potential of 0.67 V (vs. RHE) which can be in situ enhanced by dealloying treatment in N2 saturated 0.1 M KOH solution. In situ dealloying of the AgCu-MG provides exceptional ORR catalytic activity with a half-wave potential of 0.78 V (vs. RHE) at 1600 rpm, which is comparable to 0.81 V (vs. RHE) of commercial Pt/C-20%. The AgCu-MG electrocatalyst showed excellent long-term stability in rechargeable zinc-air batteries. After 1000 charge-discharge cycles at 20 mA cm-2, the discharge voltage of batteries was stable at 1.0 V demonstrating the potential application of AgCu-MG as an alternative to Pt/C-20% in zinc-air batteries and alkaline fuel cells.

AB - Highly active electrocatalysts with good long term stability are vital for the commercialization of metal air batteries and alkaline fuel cells which involve the oxygen reduction reaction (ORR) at the cathode end. Herein, we developed a pulsed laser deposition (PLD) technique for the precise fabrication of silver-copper metallic glass (AgCu-MG) electrocatalysts. This PLD technique provides excellent control over the surface microtopography along with high flexibility for the deposition of different compositions of silver-copper metallic glass electrocatalysts onto nickel foam. Among all investigated Ag-based catalysts, AgCu-MG catalysts exhibit high electrocatalytic activity with a half-wave potential of 0.67 V (vs. RHE) which can be in situ enhanced by dealloying treatment in N2 saturated 0.1 M KOH solution. In situ dealloying of the AgCu-MG provides exceptional ORR catalytic activity with a half-wave potential of 0.78 V (vs. RHE) at 1600 rpm, which is comparable to 0.81 V (vs. RHE) of commercial Pt/C-20%. The AgCu-MG electrocatalyst showed excellent long-term stability in rechargeable zinc-air batteries. After 1000 charge-discharge cycles at 20 mA cm-2, the discharge voltage of batteries was stable at 1.0 V demonstrating the potential application of AgCu-MG as an alternative to Pt/C-20% in zinc-air batteries and alkaline fuel cells.

UR - http://www.scopus.com/inward/record.url?scp=84959422331&partnerID=8YFLogxK

U2 - 10.1039/c5ta09266c

DO - 10.1039/c5ta09266c

M3 - Article

AN - SCOPUS:84959422331

VL - 4

SP - 3527

EP - 3537

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 9

ER -