Study on the Application of Nitrogen-Doped Holey Graphene in Supercapacitors with Organic Electrolyte oleh Yu-Ren Huang, Nen-Wen Pu, Guan-Min Wu, Yih-Ming Liu, Ming-Hsien Lin, Yi-Le Kwong, Siou-Cheng Li, Jeng-Kuei Chang, Ming-Der Ger