Wu Shi-Xiong, Li Gao-Ren
College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China.
Nanoscale. 2025 Jul 10;17(27):16114-16152. doi: 10.1039/d5nr00966a.
Although platinum (Pt) is an excellent electrocatalyst, its high price hinders its widespread application. So, developing a clean and efficient noble metal-free electrocatalyst is urgent for electrochemical energy conversion. Recently, researchers have focused on polyaniline (PANI)-based catalysts to replace noble metal catalysts for targeted >2e product reactions crucial for electrochemical energy conversion. This review introduces the importance of PANI, especially the catalytic performance of PANI-based catalysts in different electrochemical reactions, including the oxygen evolution reaction (OER), hydrogen evolution reaction (HER), oxygen reduction reaction (ORR), CO reduction reaction (CORR), . Because of its unique redox properties, high conductivity, high stability, ease of synthesis, and low cost, PANI can serve as an effective support for catalysts to enhance their catalytic performance. Then, based on our understanding of the catalytic mechanism, we discuss regulatory strategies for improving catalytic performance by enhancing the intrinsic activity of active sites and increasing the active surface area through the use of PANI. Finally, in response to the shortcomings of PANI composite catalysts in each catalytic reaction, we have identified the key issues and challenges for their future development.
尽管铂（Pt）是一种优异的电催化剂，但其高昂的价格阻碍了其广泛应用。因此，开发一种清洁高效的无贵金属电催化剂对于电化学能量转换来说迫在眉睫。最近，研究人员将重点放在了基于聚苯胺（PANI）的催化剂上，以取代贵金属催化剂用于对电化学能量转换至关重要的目标>2e产物反应。本文综述介绍了聚苯胺的重要性，特别是基于聚苯胺的催化剂在不同电化学反应中的催化性能，包括析氧反应（OER）、析氢反应（HER）、氧还原反应（ORR）、CO还原反应（CORR）等。由于其独特的氧化还原性质、高导电性、高稳定性、易于合成以及低成本，聚苯胺可以作为催化剂的有效载体以提高其催化性能。然后，基于我们对催化机理的理解，我们讨论了通过增强活性位点的本征活性以及利用聚苯胺增加活性表面积来提高催化性能的调控策略。最后，针对聚苯胺复合催化剂在各催化反应中的缺点，我们确定了其未来发展的关键问题和挑战。
