Surface evolution of a Pt–Pd–Au electrocatalyst for stable oxygen reduction

Li, Jian; Yin, Huiming; Li, Xibo; Okunishi, Eiji; Shen, Yongli; He, Jia; Tang, Zhen‐Kun; Wang, Wenxin; Yücelen, Emrah; Li, Chao; Gong, Yue; Gu, Lin; Miao, Shu; Liu, Limin; Luo, Jun; Ding, Yi

doi:10.1038/nenergy.2017.111

Cited by 348 publications

(241 citation statements)

References 64 publications

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“…[25] Here, the stability of the Au 52 Cu 48 aerogels was first evaluated through an accelerated degradation test (ADT),w hich was performed by applying continuous potential cycling between 0.5 and 1.0 Vw ith as weep rate of 100 mV s À1 in O 2 -saturated 0.1 m KOH solution.C ommercial Pt/C wasu sed as ab aseline catalyst for comparison. [25] Here, the stability of the Au 52 Cu 48 aerogels was first evaluated through an accelerated degradation test (ADT),w hich was performed by applying continuous potential cycling between 0.5 and 1.0 Vw ith as weep rate of 100 mV s À1 in O 2 -saturated 0.1 m KOH solution.C ommercial Pt/C wasu sed as ab aseline catalyst for comparison.…”

mentioning

confidence: 99%

Gold–Copper Aerogels with Intriguing Surface Electronic Modulation as Highly Active and Stable Electrocatalysts for Oxygen Reduction and Borohydride Oxidation

et al. 2018

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We, for the first time, report the successful synthesis of self-assembled AuCu aerogels by a one-pot kinetically controlled approach. A startling electronic modulation effect of Cu on Au was observed across the entire alloy composition range, for which the optimal upshift of the d-band center for the highest activities was 0.24 eV. Owing to the combination of a nanoporous architecture and a robust electronic effect, the Au Cu aerogels exhibited better catalytic performance for the oxygen reduction reaction (ORR) and the direct borohydride oxidation reaction (BOR) than commercial Pt/C catalysts. The specific and mass ORR activities were 4.5 and 6.3 times higher, respectively, on the Au Cu aerogels than on Pt/C with negligible activity decay even after 10 000 cycles and a duration of 40 000 s. For the BOR, the Au Cu aerogels also exhibited far better selectivity and activity than Pt/C. The new AuCu aerogels show great potential as a promising alternative for Pt-based catalysts in fuel cells.

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confidence: 99%

Gold–Copper Aerogels with Intriguing Surface Electronic Modulation as Highly Active and Stable Electrocatalysts for Oxygen Reduction and Borohydride Oxidation

et al. 2018

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“…The formation of Pd alloys, as the good results achieved in Pt alloys, has been explored to enhance the catalytic activity of Pd for possible practical requirements. Plenty of binary, ternary, and some multiple‐element Pd alloys have been discovered and presented much improved catalytic performances, such as Pd 11 Fe, Pd 11 Co, PdCo, Pd 3 Fe, Pd 3 Pb, Pd 2 NiAg, Pt–Pd–Au, etc . The improved catalytic performance of Pd alloys can be attributed to the compression of PdPd bond aroused by the addition of secondary transition metals, which lead to the downshift of d‐band center to improve the ORR performance .…”

Section: Primary Non‐li Metal–o2 Batteries With Aqueous Electrolytesmentioning

confidence: 99%

Toward Promising Cathode Catalysts for Nonlithium Metal–Oxygen Batteries

Mei

Liao

Liang

et al. 2019

Advanced Energy Materials

118

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The success of Li–air/O2 batteries has brought extensive attention to the development of various promising non‐Li metal–O2 batteries, such as Zn–O2, Al–O2, Mg–O2 batteries, etc., which have exhibited unique advantages, such as low production cost, high energy density, and much enhanced safety. The versatile non‐Li metal–O2 batteries provide a better opportunity for meeting the practical requirements for sustainable energy supplies in various applications. A high‐performance cathode in non‐Li metal–O2 batteries that can effectively trigger both oxygen reduction and evolution reactions and thus boost the overall battery performance is of great research interest. In this article, a comprehensive review on the development of Li‐free metal–O2 batteries and particularly focusing on the oxygen catalytic cathodes for both primary and secondary non‐Li metal–O2 batteries is carefully performed. The current challenges and potential solutions are also outlined and proposed. Through carefully selecting and rationally designing promising catalytic cathodes, a series of non‐Li metal–oxygen batteries toward practical energy storage applications are highly anticipated.

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“…Alternatively, adjusting the surface chemical environment by the interaction of two or multiple metals is a useful method to enhance the intrinsic activity of each site . For example, the nanoporous Au membranes with atomically thin Pd and Pt overlayer coating synthesized by Ding‘s group via an underpotential deposition process, exhibited extremely high activity for ORR . Furthermore, our group first reported the preparation of a novel single atom alloy electrocatalyst with Cu−Pt dual sites on ultrathin Pd nanorings (NRs) under mild conditions .…”

Section: Introductionmentioning

confidence: 99%

Design of Noble Metal Electrocatalysts on an Atomic Level

Chao

Hong

et al. 2018

ChemElectroChem

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Nanostructured noble metal‐based materials have been considered in recent years as promising catalysts for energy storage and conversion. One of their prominent applications is a series of electrochemical processes in fuel cells, as they show excellent electrocatalytic performance towards the reactions occurring at both anode and cathode. Nowadays, considerable efforts have been devoted to boosting the catalytic activity and minimizing the used amount of precious metals. In this review, we introduce the recent advances regarding controllable synthesis of noble metal electrocatalysts at an atomic level. Important electrochemical reactions, such as oxygen reduction reaction (ORR), hydrogen evolution reaction (HER), oxygen evolution reaction (OER), electroreduction of carbon dioxide (CO2) and so on, catalyzed by precisely controllable noble metal electrocatalysts will be highlighted. This review primarily focuses on the exploration for the relationship between atomic‐level structure of electrocatalysts and their enhanced catalytic property combining theoretical calculations and experiments. Finally, perspectives for further advances of noble metal nanomaterials are proposed to realize rational design of electrocatalysts at an atomic level.

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Surface evolution of a Pt–Pd–Au electrocatalyst for stable oxygen reduction

Cited by 348 publications

References 64 publications

Gold–Copper Aerogels with Intriguing Surface Electronic Modulation as Highly Active and Stable Electrocatalysts for Oxygen Reduction and Borohydride Oxidation

Gold–Copper Aerogels with Intriguing Surface Electronic Modulation as Highly Active and Stable Electrocatalysts for Oxygen Reduction and Borohydride Oxidation

Toward Promising Cathode Catalysts for Nonlithium Metal–Oxygen Batteries

Design of Noble Metal Electrocatalysts on an Atomic Level

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