Hybrid shells of N-doped carbon encapsulated by MnO nanoparticles as oxygen reduction reaction electrocatalysts. (13th December 2019)

• Record Type: Journal Article
• Authors: Li, Yanan; Han, Jie; Xu, Zhilong; Guo, Rong
• Is Part Of: New journal of chemistry. Volume 44:Number 2(2020)
• Page Start: 580
• Page End: 585
• Publication Date: 2019-12-13
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c9nj05550a
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Recently, the development of non-precious metal electrocatalysts for effective oxygen reduction reaction (ORR) has become a research hotspot. Abstract : Recently, the development of non-precious metal electrocatalysts for effective oxygen reduction reaction (ORR) has become a research hotspot. Herein, a facile and effective strategy is explored to develop non-precious electrocatalysts of hybrid shells of N-doped carbon (N-carbon) encapsulated by MnO (denoted as MnO/N-carbon/MnO), which can be recognized as efficient and durable electrocatalysts for ORR. The MnO2 /N-carbon/MnO2 hybrid shells were synthesized via the redox reaction between poly( o -phenylenediamine) (PoPD) hollow microspheres and KMnO4, followed by a calcination process to form MnO/N-carbon/MnO hybrid shells. The cyclic voltammetry (CV) and linear scanning voltammetry (LSV) proved that MnO/N-carbon/MnO(800) hybrid shells showed the best electrocatalytic activity for ORR. The hybrid structure of the material and the synergy between MnO and N-carbon contribute to the improved electrocatalytic activity for ORR.