Non-aqueous solution synthesis of Pt-based nanostructures for fuel cell catalysts

Ding, Haojie; Wang, Shancheng; Yi, Long; Chan, Siew Hwa

doi:10.1016/j.mtener.2020.100616

Cited by 11 publications

(7 citation statements)

References 105 publications

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“…These structures not only have high conductivity, but can also make sure the nanocrystals are fully in contact with the support and effectively inhibit Ostwald ripening, with excellent stability [ 22 , 23 , 24 ]. The same is true of porous nanostructures, which not only provide rich catalytic active sites, but also effectively inhibit agglomeration [ 25 ]. In addition to changing the structure of Pt-based catalysts, morphology control is also an effective method to enhance the catalytic performance [ 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Pt-Based Oxygen Reduction Reaction Catalysts in Proton Exchange Membrane Fuel Cells: Controllable Preparation and Structural Design of Catalytic Layer

Zhao

Tao

et al. 2022

Nanomaterials

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Proton exchange membrane fuel cells (PEMFCs) have attracted extensive attention because of their high efficiency, environmental friendliness, and lack of noise pollution. However, PEMFCs still face many difficulties in practical application, such as insufficient power density, high cost, and poor durability. The main reason for these difficulties is the slow oxygen reduction reaction (ORR) on the cathode due to the insufficient stability and catalytic activity of the catalyst. Therefore, it is very important to develop advanced platinum (Pt)-based catalysts to realize low Pt loads and long-term operation of membrane electrode assembly (MEA) modules to improve the performance of PEMFC. At present, the research on PEMFC has mainly been focused on two areas: Pt-based catalysts and the structural design of catalytic layers. This review focused on the latest research progress of the controllable preparation of Pt-based ORR catalysts and structural design of catalytic layers in PEMFC. Firstly, the design principle of advanced Pt-based catalysts was introduced. Secondly, the controllable preparation of catalyst structure, morphology, composition and support, and their influence on catalytic activity of ORR and overall performance of PEMFC, were discussed. Thirdly, the effects of optimizing the structure of the catalytic layer (CL) on the performance of MEA were analyzed. Finally, the challenges and prospects of Pt-based catalysts and catalytic layer design were discussed.

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Section: Introductionmentioning

confidence: 99%

Pt-Based Oxygen Reduction Reaction Catalysts in Proton Exchange Membrane Fuel Cells: Controllable Preparation and Structural Design of Catalytic Layer

Zhao

Tao

et al. 2022

Nanomaterials

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“…There are various synthetic strategies that have been developed to prepare PtM nanomaterials, such as vapor phase, liquid phase, template and chemical methods, etc [32][33][34][35][36]. Among the above mentioned synthesis methods, the one-pot approach is widely used due to its operational simplicity and suitability for large scale commercial production [36].…”

Section: Introductionmentioning

confidence: 99%

PtNi multi-branched nanostructures as efficient bifunctional electrocatalysts for fuel cell

Zhao¹,

Qian²,

Bai³

et al. 2022

J. Phys. D: Appl. Phys.

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Fuel cells are highly efficient conversion devices to alleviate energy crisis and environmental pollution, but still encounter technical challenges to further improve catalytic efficiency of Pt-based electrocatalysts. In this work, PtNi multi-branched nanostructures (PtNi MBNs) were successfully prepared by a simple and economical one-step solvothermal method. The average diameter of the branches is about 9 nm, with numerous atom steps and Pt-rich surface. The prepared electrocatalyst shows excellent bifunctionality in acidic electrolytes, catalyzing both oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR). The half-wave potential of 0.966 V for ORR is much higher than that of commercial Pt/C (0.931 V), and only decreases 14 mV after 8,000 cycles. For MOR, the specific activity of PtNi MBNs is 18.1 A m-2 Pt, better than that of commercial Pt/C (7.8 A m-2 Pt), indicating an optimal intrinsic activity. The remarkable bifunctionality of PtNi MBNs is attributed to the exposed electrochemical surface area, abundant atomic steps, and Pt-rich surface provided by the unique multi-branched nanostructure. This facile preparation technique offers a promising application for designing high-performance electrocatalyst for acid direct methanol fuel cell in the future.

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“…To date, the development of PEMFCs is still highly dependent on the Pt-based catalysts; however, its scarcity and high price hinder large-scale commercialization. 3 In recent decades, extensive efforts have been paid to exploring inexpensive alternatives to take the place of Pt-based catalysts. Unfortunately, catalytic performances of the nonprecious catalysts are still far away from the requirement for replacing Pt-based catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…To date, the development of PEMFCs is still highly dependent on the Pt-based catalysts; however, its scarcity and high price hinder large-scale commercialization. 3 …”

Section: Introductionmentioning

confidence: 99%

Enhanced catalytic performance of Pt by coupling with carbon defects

et al. 2021

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Non-aqueous solution synthesis of Pt-based nanostructures for fuel cell catalysts

Cited by 11 publications

References 105 publications

Pt-Based Oxygen Reduction Reaction Catalysts in Proton Exchange Membrane Fuel Cells: Controllable Preparation and Structural Design of Catalytic Layer

Pt-Based Oxygen Reduction Reaction Catalysts in Proton Exchange Membrane Fuel Cells: Controllable Preparation and Structural Design of Catalytic Layer

PtNi multi-branched nanostructures as efficient bifunctional electrocatalysts for fuel cell

Enhanced catalytic performance of Pt by coupling with carbon defects

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