Amino Acid Protic Ionic Liquids: Multifunctional Carbon Precursor for N/S Codoped Hierarchically Porous Carbon Materials toward Supercapacitive Energy Storage

Amino acids (AAs) are abundant in nature as the basic constituent unit of waste proteins. Amino acid protic ionic liquids (AA-PILs) rich in C, N, O, and S elements can be easily synthesized, making them a promising potential precursor of N/S codoped carbon materials for high-performance supercapacitors. A series of 21 AA-PILs were prepared and directly carbonized with various carbon yields due to the different alkyl group of AA-PILs, indicating...