Highly efficient electrocatalysts fabricated via electrophoretic deposition for alcohol oxidation, oxygen reduction, hydrogen evolution, and oxygen evolution reactions

• Published in: International journal of hydrogen energy 2021-02, Vol.46 (10), p.7263-7283
• Main Authors: Daryakenari, Ahmad Ahmadi, Mosallanejad, Behrooz, Zare, Erfan, Daryakenari, Mohammad Ahmadi, Montazeri, Arash, Apostoluk, Aleksandra, Delaunay, Jean-Jacques
• Format: Article
• Language: English
• Subjects: Direct current electrophoretic; Drop casting; Engineering Sciences; Fuel cell; Micro and nanotechnologies; Microelectronics; Noble metal electrocatalyst; Non-noble metal electrocatalyst; Pulse electrophoretic
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2020.11.261

Electrophoretic deposition (EPD) is a versatile technique that has drawn attention due to its ease of use and performance in depositing high-quality layers at room temperature. This technique principle is based on the deposition of charged particles from a stable colloidal suspension on a conductive substrate using either a direct or alternating current. Using relatively simple and low-cost equipment, the EPD technique enables the deposition of layers with controlled microstructures at nanoscale. The EPD technique has been particularly successful in the fabrication of the electrocatalyst layers for low-temperature fuel cells, which are anchored on the top of the fuel cell electrodes. In comparison with other electrocatalyst layer deposition techniques such as drop-casting, the EPD technique offers clear advantages for the control of the thickness and packing density of the electrocatalyst layers. Owing to the dense packing density, electrocatalyst layers deposited by EPD could achieve enhanced conductivity and efficiency. The present review aims at comprehensively evaluating the recently published results on the electrocatalyst layers fabricated by EPD and applied in oxygen reduction reactions, alcohol electro-oxidation reactions, hydrogen evolution reactions, and oxygen evolution reactions. [Display omitted] •The preparation of electrocatalysts is an important issueto commercialize electrochemical energy conversion systems.•The standard drop-casting method mainly suffers from its lack of control.•EPD technique is a means to fabricate highly efficient and low-cost electrocatalyst.•This review discusses deeply electrocatalyst fabrication by EPD process.