J. Mater. Sci. Technol. ›› 2024, Vol. 187: 123-140.DOI: 10.1016/j.jmst.2023.11.020

• Review Article • Previous Articles     Next Articles

Research and strategies for efficient electrocatalysts towards anodic oxygen evolution reaction in seawater electrolysis system

Han-Ming Zhanga,b, Lihao Zuoa,b, Jiakang Lia,b, Shaofei Zhanga,b, Junxia Guoa,b, Xiao-Pu Lic, Gang Liud, Peng Wanga,b,*, Jinfeng Suna,b,*   

  1. aSchool of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China;
    bHebei Key Laboratory of Flexible Functional Materials, Shijiazhuang, Hebei 0500180, China;
    cState Key Laboratory of Matastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004. China;
    dSchool of Materials and Energy, Southwest University, Chongqing 400715, China
  • Received:2023-09-05 Revised:2023-10-18 Accepted:2023-11-14 Published:2024-07-10 Online:2024-01-20
  • Contact: *E-mail addresses: wp390061130@126.com (P. Wang), sjf301@126.com (J. Sun)

Abstract: Seawater electrolysis is one most promising development directions for future hydrogen energy. However, big challenges of active site poisoning, chloride oxidation (ClOR), and chloride corrosion on anode electrocatalysts, seriously impede seawater electrolysis development. Therefore, developing efficient anodic oxygen evolution reaction (OER) electrocatalysts is an urgent task for seawater electrolysis. The advanced strategies of improving OER kinetics, lowering ClOR kinetics, strengthening corrosion resistance, and recombining multifunction are summarized and analyzed to help researchers quickly grasp the recent progress on seawater oxidation. The outlooks for future research are put forward. The future research directions are proposed as internal and external cultivation, giving full play to the physicochemical properties of electrocatalysts, making sense of structure evolution and OER mechanism, and elucidating the electrical double layer of electrocatalysts. A lot of room for scalable application of seawater electrolysis calls for persistent effort and devotion of related researchers to boost seawater electrolysis development and universal hydrogen energy application.

Key words: Hydrogen energy, Seawater electrolysis, Oxygen evolution reaction, Chloride oxidation reaction, Corrosion resistance