Fullerene Network-Buffered Platinum Nanoparticles Towards Efficient and Stable Electrochemical Ammonia Oxidation Reaction for Hydrogen Production

• Published in: Angewandte Chemie International Edition p. e202505180
• Main Authors: Chen, Xiang, Ke, Zhongyuan, Wang, Xing, Jin, Hongqiang, Cheng, Yuwen, Xiao, Yukun, Jiang, Rui, Da, Yumin, Fan, Lei, Li, Hexing, Liu, Dongming, Yang, Shangfeng, Chen, Wei
• Format: Journal Article
• Language: English
• Published: 16.04.2025
• ISSN: 1521-3773; 1521-3773
• DOI: 10.1002/anie.202505180

Green ammonia is a promising hydrogen carrier due to its well-established production, storage, and transportation infrastructure. Moreover, hydrogen production via electrochemical ammonia oxidation reaction (AOR) requires a significantly lower theoretical potential than water electrolysis. However, the sluggish kinetics and poor stability of AOR hinder the industrial application of ammonia electrolysis. Herein, we report the construction of two-dimensional covalently bonded fullerene polymeric network (PNW-C60) supported platinum nanoparticles (Pt NPs) as a highly active and stable AOR electrocatalyst. The unique electron buffering effect of PNW-C60 enhances the desorption of nitrogen-containing species and prevents their poisoning on the Pt NPs surface. Consequently, the as-obtained PNW-C60-buffered Pt NPs exhibits a high mass activity of 118 A gPt-1 as well as good stability, outperforming commercial Pt/C and graphene-supported Pt NPs AOR catalysts.Green ammonia is a promising hydrogen carrier due to its well-established production, storage, and transportation infrastructure. Moreover, hydrogen production via electrochemical ammonia oxidation reaction (AOR) requires a significantly lower theoretical potential than water electrolysis. However, the sluggish kinetics and poor stability of AOR hinder the industrial application of ammonia electrolysis. Herein, we report the construction of two-dimensional covalently bonded fullerene polymeric network (PNW-C60) supported platinum nanoparticles (Pt NPs) as a highly active and stable AOR electrocatalyst. The unique electron buffering effect of PNW-C60 enhances the desorption of nitrogen-containing species and prevents their poisoning on the Pt NPs surface. Consequently, the as-obtained PNW-C60-buffered Pt NPs exhibits a high mass activity of 118 A gPt-1 as well as good stability, outperforming commercial Pt/C and graphene-supported Pt NPs AOR catalysts.