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Non-aqueous solution synthesis of Pt-based nanostructures for fuel cell catalysts
Materials Today Energy ( IF 9.3 ) Pub Date : 2020-12-09 , DOI: 10.1016/j.mtener.2020.100616
Hualin Ding , Shancheng Wang , Yi Long , Siew Hwa Chan

Platinum (Pt) is widely adopted in proton exchange membrane fuel cells (PEMFCs), which efficiently convert the chemical energy of a fuel, typical hydrogen, into electrical energy electrochemically. However, PEMFCs are commercially limited by the expensive Pt and low catalytic activity preventing them from widespread application. Alloying Pt with other metals is considered to be one of the effective ways to break through commercial restrictions. Hence, it is crucial to reduce the consumption of Pt and promote the catalytic activity and stability of Pt-based catalysts. To achieve the ultimate goal, various Pt-based nanostructures with controlled and tunable sizes, morphology, compositions, and facets have been prepared. In the synthetic methods of Pt-based nanostructures, non-aqueous solutions, which have higher boiling point compared with aqueous solution and can promote alloying Pt with high reduction energy barrier and high melting point metal elements, have been proven to be a promising choice for synthesizing high-performance catalysts. Herein, an overview of the recent advances in the non-aqueous solution synthesis of Pt-based nanostructures with the main focus on process–structure relationships are provided. Finally, some future perspectives on the remaining synthesis challenges of Pt-based fuel cell catalysts are presented.



中文翻译:

燃料电池催化剂基于Pt的纳米结构的非水溶液合成

铂(Pt)广泛用于质子交换膜燃料电池(PEMFC)中,可有效地将燃料(通常为氢)的化学能电化学转化为电能。然而,PEMFC在商业上受到昂贵的Pt和低催化活性的限制,从而阻止了它们的广泛应用。Pt与其他金属的合金化被认为是突破商业限制的有效方法之一。因此,减少Pt的消耗并提高Pt基催化剂的催化活性和稳定性是至关重要的。为了达到最终目的,已经制备了各种具有受控且可调的尺寸,形态,组成和面的基于Pt的纳米结构。在基于Pt的纳米结构,非水溶液的合成方法中,与水溶液相比,它们具有更高的沸点并且可以促进具有高还原能垒和高熔点金属元素的Pt合金化,已被证明是合成高性能催化剂的有前途的选择。在此,概述了基于Pt的纳米结构的非水溶液合成的最新进展,重点是工艺与结构之间的关系。最后,提出了一些有关Pt基燃料电池催化剂剩余合成挑战的未来观点。概述了基于Pt的纳米结构的非水溶液合成的最新进展,重点是工艺与结构之间的关系。最后,提出了一些有关Pt基燃料电池催化剂剩余合成挑战的未来观点。概述了基于Pt的纳米结构的非水溶液合成的最新进展,重点是工艺与结构之间的关系。最后,提出了一些有关Pt基燃料电池催化剂剩余合成挑战的未来观点。

更新日期:2021-01-10
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