Lignin-Based Carbon Nanofibers as Electrodes for Vanadium Redox Couple Electrochemistry.

ABSTRACT: Three different types of lignin (kraft, organosolv and phosphoric acid lignin) were characterized and tested as precursors of electrospun nanofibers. Polyethylene oxide (PEO) was added as a plasticizer and dimethyl formamide (DMF) employed as a solvent. It was found that the molecular weight of lignin was the key parameter to understand the differences of the mechanical stability of the resultant fiber mats. In the case of kraft lignin (KL), the influence of some changes in the synthetic process was also tested: applied voltage, pretreatment in air or not, and the addition of a small amount of Ketjen black. After pyrolysis in nitrogen flow, the obtained carbon nanofibers (CNFs) were characterized by different techniques to analyze their differences in morphology and surface chemistry. Vana

SUBMITTER: Vivo-Vilches JF 

PROVIDER: S-EPMC6359536 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature