Astragali Radix-derived nitrogen-doped porous carbon: An efficient electrocatalyst for the oxygen reduction reaction. (11th January 2018)

• Record Type: Journal Article
• Authors: Li, Jinmei; Wang, Wei; Wang, Fengxia; Kang, Yumao; Tan, Ting; Lei, Ziqiang
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 2(2018)
• Page Start: 551
• Page End: 561
• Publication Date: 2018-01-11
• Subjects: Astragali Radix -- Biomass -- Non-precious metal -- Electrocatalyst -- Oxygen reduction reaction; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.11.078
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: The development of biomass-derived nitrogen-doped porous carbons (NPCs) for the oxygen reduction reaction (ORR) is important for sustainable energy systems. Herein, NPCs derived from Astragali Radix (AR) via a cost-effective strategy are reported for the first time. The as-prepared AR-950-5 catalyst shows a stacked layer-like structure and porosity. Notably, the optimized AR-950-5 delivers catalytic activity comparable to that of commercial Pt/C (C-Pt/C), with high onset potential, positive half-wave potential and large limiting current density. It also displays superior long-term stability and methanol tolerance for ORR. This work will pave the way for a new approach in the development of highly active and low-cost NPCs for fuel cells. Graphical abstract: Highlights: Novel biomass-derived NPCs are obtained from Astragali Radix. AR-950-5 possesses stacked layer-like structure and porosity. AR-950-5 exhibits superior ORR performance.