Kaur Jasvinder, Gupta Ram K, Kumar Anuj
Department of Chemistry, School of Sciences, IFTM University, Moradabad, Uttar Pradesh, 244102, India.
Department of Chemistry, Pittsburg State University, Pittsburg, KS, 66762, USA.
Discov Nano. 2024 Sep 3;19(1):137. doi: 10.1186/s11671-024-04067-9.
Direct ethanol fuel cells (DEFCs) have been widely considered as a feasible power conversion technology for portable and mobile applications. The economic feasibility of DEFCs relies on two conditions: a notable reduction in the expensive nature of precious metal electrocatalysts and a simultaneous remarkable improvement in the anode's long-term performance. Despite the considerable progress achieved in recent decades in Pt nanoengineering to reduce its loading in catalyst ink with enhanced mass activity, attempts to tackle these problems have yet to be successful. During the ethanol oxidation reaction (EOR) at the anode surface, Pt electrocatalysts lose their electrocatalytic activity rapidly due to poisoning by surface-adsorbed reaction intermediates like CO. This phenomenon leads to a significant loss in electrocatalytic performance within a relatively short time. This review provides an overview of the mechanistic approaches during the EOR of noble metal-based anode materials. Additionally, we emphasized the significance of many essential factors that govern the EOR activity of the electrode surface. Furthermore, we provided a comprehensive examination of the challenges and potential advancements in electrocatalytic EOR.
直接乙醇燃料电池（DEFCs）已被广泛认为是一种适用于便携式和移动应用的可行的功率转换技术。DEFCs的经济可行性依赖于两个条件：显著降低贵金属电催化剂昂贵的特性，以及同时显著提高阳极的长期性能。尽管近几十年来在铂纳米工程方面取得了相当大的进展，以降低其在具有增强质量活性的催化剂油墨中的负载量，但解决这些问题的尝试尚未成功。在阳极表面的乙醇氧化反应（EOR）过程中，铂电催化剂由于被表面吸附的反应中间体（如CO）中毒而迅速失去其电催化活性。这种现象导致在相对较短的时间内电催化性能显著损失。本综述概述了基于贵金属的阳极材料在EOR过程中的机理方法。此外，我们强调了许多控制电极表面EOR活性的重要因素的重要性。此外，我们对电催化EOR中的挑战和潜在进展进行了全面审视。
