Facile construction of S-containing Co-based metal organic framework core–shell microspheres as an efficient bifunctional oxygen electrocatalyst. Issue 33 (6th August 2021)

• Record Type: Journal Article
• Authors: Liu, Ping; Han, Huijuan; Xia, Qingyun; Ma, Nini; Lu, Sihan; Shang, Xuefang; Wang, Ge; Chao, Shujun
• Is Part Of: Dalton transactions. Volume 50:Issue 33(2021)
• Page Start: 11440
• Page End: 11445
• Publication Date: 2021-08-06
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt01765a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : An efficient bifunctional electrocatalyst, S-containing Co-MOF core–shell microspheres, has been designed and constructed through a facile one-step hydrothermal method. It displays high ORR and OER performances in an alkaline medium. Abstract : A cost-effective non-noble metal bifunctional electrocatalyst towards the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) is very important for energy-related applications. Micro/nanomaterials with core–shell structures have emerged as potential non-noble metal catalyst candidates. Herein, an efficient bifunctional oxygen electrocatalyst, S-containing Co-based metal organic framework core–shell microspheres (Co-MOF-CSMSs), has been designed and constructed by using 2, 2′:5′, 2′′-terthiophene-5, 5′′-dicarboxylic acid as a novel ligand through a facile one-step hydrothermal method. Due to the integrated favorable structural characteristics of the core–shell structure and MOFs for electrocatalysis, Co-MOF-CSMSs are revealed as a good bifunctional electrocatalyst for the ORR and OER, including an onset potential of 0.93 V vs . RHE (reversible hydrogen electrode), a half-wave potential of 0.78 V vs . RHE and an overpotential of 0.35 V at 10 mA cm −2 . This work provides a low-cost and facile method to design and construct advanced micro/nanomaterials with core–shell structures to targetedly develop high-performance bifunctional oxygen electrocatalysts.