Li Fu-Min, Huang Lei, Zaman Shahid, Guo Wei, Liu Hongfang, Guo Xingpeng, Xia Bao Yu
School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, China.
Adv Mater. 2022 Dec;34(52):e2200840. doi: 10.1002/adma.202200840. Epub 2022 Jul 11.
Electrocatalysts are the core components of many sustainable energy conversion technologies that are considered the most potential solution to the worldwide energy and environmental crises. The reliability of structure and composition pledges that electrocatalysts can achieve predictable and stable performance. However, during the electrochemical reaction, electrocatalysts are influenced directly by the applied potential, the electrolyte, and the adsorption/desorption of reactive species, triggering structural and compositional corrosion, which directly affects the catalytic behaviors of electrocatalysts (performance degradation or enhancement) and invalidates the established structure-activity relationship. Therefore, it is necessary to elucidate the corrosion behavior and mechanism of electrocatalysts to formulate targeted corrosion-resistant strategies or use corrosion reconstruction synthesis techniques to guide the preparation of efficient and stable electrocatalysts. Herein, the most recent developments in electrocatalyst corrosion chemistry are outlined, including corrosion mechanisms, mitigation strategies, and corrosion syntheses/reconstructions based on typical materials and important electrocatalytic reactions. Finally, potential opportunities and challenges are also proposed to foresee the possible development in this field. It is believed that this contribution will raise more awareness regarding nanomaterial corrosion chemistry in energy technologies and beyond.
电催化剂是许多可持续能源转换技术的核心组件，这些技术被认为是解决全球能源和环境危机最具潜力的方案。结构和组成的可靠性保证了电催化剂能够实现可预测的稳定性能。然而，在电化学反应过程中，电催化剂直接受到外加电势、电解质以及反应物种吸附/解吸的影响，引发结构和组成的腐蚀，这直接影响电催化剂的催化行为（性能下降或增强），并使已建立的结构-活性关系失效。因此，有必要阐明电催化剂的腐蚀行为和机理，以制定有针对性的抗腐蚀策略，或采用腐蚀重构合成技术来指导高效稳定电催化剂的制备。在此，概述了电催化剂腐蚀化学的最新进展，包括基于典型材料和重要电催化反应的腐蚀机理、缓解策略以及腐蚀合成/重构。最后，还提出了潜在的机遇和挑战，以预见该领域可能的发展。相信这一贡献将提高人们对能源技术及其他领域纳米材料腐蚀化学的认识。
