催化作用
水热碳化
碳化
热液循环
碳纤维
电化学
材料科学
化学工程
金属
铂金
无机化学
化学
有机化学
电极
冶金
复合材料
扫描电子显微镜
物理化学
工程类
复合数
作者
Aldo Girimonte,Andrea Stefani,Claudio Mucci,Roberto Giovanardi,Andrea Marchetti,Massimo Innocenti,Claudio Fontanesi
摘要
This research investigates the difference between products obtained through two hydrothermal carbonization treatments. Our aim is to synthesize metal-free, carbon-based catalysts for the oxygen reduction reaction (ORR) to serve as efficient and cost-effective alternatives to platinum-based catalysts. Catalysts synthesized using the traditional hydrothermal approach exhibit a higher electrocatalytic activity for ORR in alkaline media, despite their more energy-intensive production process. The superior performance is attributed to differences in the particle morphology and the chemical composition of the particle surfaces. The presence of functional groups on the surfaces of catalysts obtained via a traditional approach significantly enhances ORR activity by facilitating deprotonation reactions in an alkaline environment. Our research aims to provide a reference for future investigations, shifting the focus to the fine-tuning of surface chemical compositions and morphologies of metal-free catalysts to enhance ORR activity.
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