Facile synthesis of Nafion-supported Pt nanoparticles with ultra-low loading as a high-performance electrocatalyst for hydrogen evolution reaction

• Published in: Journal of colloid and interface science Vol. 566; pp. 505 - 512
• Main Authors: Yu, Jianguo, Wei, Dan, Zheng, Zhe, Yu, Wenjie, Shen, Honghui, Qu, Yuning, Wen, Shuya, Kwon, Young-Uk, Zhao, Yongnan
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 15.04.2020
• Subjects: Electrocatalysts; HER; Nafion; Platinum nanoparticles; Platinum nanoparticles; HER; Nafion; Electrocatalysts
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/j.jcis.2019.10.112

[Display omitted] x%Pt-Naf-CV (Pt-Nafion-Cyclic Voltammetry) catalysts with homogeneously distributed platinum nanoparticles and ultra-low Pt loading are successfully synthesized by using a facile potential cycling approach. The as-synthesized 0.8%Pt-Naf-CV catalyst exhibits an enhanced electrocatalytic activity for hydrogen evolution reaction (HER) in 0.5 M H2SO4 solution, which obtains a low overpotential of 34 mV at 10 mA cm−2. The linear sweep voltammetry (LSV) curve of 0.8%Pt-Naf-CV catalyst is almost consistent with that of commercial Pt/C. However, the 0.8%Pt-Naf-CV catalyst displays a more excellent stability and durability in comparison with commercial Pt/C. Besides, the Pt loading of Pt/C (Pt–10 wt%) is about 10 times that of 0.8%Pt-Naf-CV catalyst. The improved electrocatalytic performances are derived from the synergistic effects of Pt and Nafion. The Nafion plays a significant role as a dispersant, carrier and structure directing agent on the morphology and size of the Pt catalyst. This result contributes a promising method to enhance the catalytic activity and reduce the amount of Pt.