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Nanostructured platinum-free electrocatalysts in alkaline direct alcohol fuel cells: catalyst design, principles and applications

机译:碱性直接醇燃料电池中的纳米结构无铂电催化剂:催化剂的设计,原理和应用

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The alkaline direct alcohol fuel cell (ADAFC) is an environmentally friendly electrochemical energy source that can drive a plethora of consumer and portable electronics. Research in ADAFCs has continued to attract major attention due to their several advantages over conventional proton-exchange membrane fuel cells (PEMFC); these include the emergence of anion-exchange membranes (AEM), easy handling of liquid alcohol fuels compared to hydrogen, higher volumetric energy densities of alcohols compared to hydrogen, enhanced reaction kinetics of alcohols and oxygen reduction reaction in alkaline media. Further developments in this field are dependent on improving the performance of nanostructured electrocatalysts and AEMs. This review is an overview of some notable advances made in recent years. Importantly, it provides an excellent insight into the fundamental principles that allow for the intelligent design and synthesis of non-precious metal nanostructured electrocatalysts for the cathode and anode reactions of ADAFCs. This review is an attempt to find answers to questions such as "Why should I use a particular catalyst for the ADAFC?", "What are the underlying principles that must inform my choice in designing such a catalyst?", and "What synthesis method(s) or catalyst supports should be considered to prepare catalysts with the appropriate physicochemical properties for high-performance?" The knowledge provided in this review can be applied not only to ADAFCs, but also to several other electrocatalytic systems (such as various other fuel cell systems, electrochemical sensors, and metal-air batteries).
机译:碱性直接酒精燃料电池(ADAFC)是一种环保的电化学能源,可以驱动大量的消费电子和便携式电子产品。 ADAFC的研究由于其相对于常规质子交换膜燃料电池(PEMFC)的几个优势而继续引起人们的广泛关注。其中包括阴离子交换膜(AEM)的出现,与氢相比液体酒精燃料易于处理,与氢相比酒精的体积能量密度更高,在碱性介质中酒精的反应动力学增强和氧还原反应。该领域的进一步发展取决于改善纳米结构电催化剂和AEM的性能。这篇综述概述了近年来取得的一些显着进展。重要的是,它提供了对基本原理的出色见解,这些基本原理允许智能设计和合成用于ADAFC阴极和阳极反应的非贵金属纳米结构电催化剂。这篇综述试图找到问题的答案,例如“为什么我应该为ADAFC使用特定的催化剂?”,“在设计这种催化剂时必须为我的选择提供指导的基本原理是什么?”和“哪种合成方法?应当考虑使用一种或多种催化剂载体或催化剂载体来制备具有适当物理化学性能的高性能催化剂?”本综述中提供的知识不仅可以应用于ADAFC,而且可以应用于其他几种电催化系统(例如各种其他燃料电池系统,电化学传感器和金属空气电池)。

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