Sun, Yong, et al. “One-Pot Pyrolysis Route to Fe−N-Doped Carbon Nanosheets With Outstanding Electrochemical Performance As Cathode Materials for Microbial Fuel Cell”. International Journal of Agricultural and Biological Engineering, vol. 13, no. 6, Dec. 2020, pp. 207-14, https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/5765.