Gong, Tianle, Ruoyu Qi, Xundao Liu, Hong Li, and Yongming Zhang. “N, F-Codoped Microporous Carbon Nanofibers As Efficient Metal-Free Electrocatalysts for ORR”. Nano-Micro Letters 11 (January 22, 2019): 9. Accessed April 29, 2024. https://nmlett.org/index.php/nml/article/view/232.