Electrospun Enzymatic Hydrolysis Lignin-Based Carbon Nanofibers as Binder-Free Supercapacitor Electrodes with High Performance

Wang, Xiang; Zhang, Wei; Chen, Minzhi; Zhou, Xiaoyan

doi:10.3390/polym10121306

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Electrospun Enzymatic Hydrolysis Lignin-Based Carbon Nanofibers as Binder-Free Supercapacitor Electrodes with High Performance

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College of Wood Science &Technology, Nanjing Forestry University, 159, Longpan Road, Nanjing 210000, China

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Polymers 2018, 10(12), 1306; https://doi.org/10.3390/polym10121306

Received: 10 October 2018 / Revised: 11 November 2018 / Accepted: 13 November 2018 / Published: 26 November 2018

(This article belongs to the Special Issue Polymers for Energy Applications)

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Abstract

Carbon nanofibers consisting of Poly(acrylonitrile) (PAN) and enzymatic hydrolysis lignin (EHL) were prepared in the present study by electrospinning followed by stabilization in air and carbonization in N₂ environment. The morphology and structure of the electrospun carbon nanofibers were characterized by Scanning Electron Microscopy (SEM), Brunauer-Emmett-Teller (BET), Roman, and the electrochemical performances were then evaluated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS)methods. When the amount of EHL was 60 wt. %, the as-prepared nanofibers have the smallest average diameter of 172 nm and the largest BET specific surface area of 675 m²/g without activating treatment. The carbon nanofiber electrode showed excellent specific capacitance of 216.8 F/g at the current density of 1 A/g, maintaining 88.8% capacitance retention after 2000 cycles. Moreover, the carbon nanofiber electrode containing 60 wt. % exhibited a smaller time constant (0.5 s) in comparison to that of carbon nanofibers in literatures. These findings suggest the potential use of EHL could be a practical as a sustainable alternative for PAN in carbon electrode manufacturing. View Full-Text

Keywords: EHL; carbon fiber; electrospinning; electrochemical performance

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Wang, X.; Zhang, W.; Chen, M.; Zhou, X. Electrospun Enzymatic Hydrolysis Lignin-Based Carbon Nanofibers as Binder-Free Supercapacitor Electrodes with High Performance. Polymers 2018, 10, 1306. https://doi.org/10.3390/polym10121306

AMA Style

Wang X, Zhang W, Chen M, Zhou X. Electrospun Enzymatic Hydrolysis Lignin-Based Carbon Nanofibers as Binder-Free Supercapacitor Electrodes with High Performance. Polymers. 2018; 10(12):1306. https://doi.org/10.3390/polym10121306

Chicago/Turabian Style

Wang, Xiang, Wei Zhang, Minzhi Chen, and Xiaoyan Zhou. 2018. "Electrospun Enzymatic Hydrolysis Lignin-Based Carbon Nanofibers as Binder-Free Supercapacitor Electrodes with High Performance" Polymers 10, no. 12: 1306. https://doi.org/10.3390/polym10121306

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Electrospun Enzymatic Hydrolysis Lignin-Based Carbon Nanofibers as Binder-Free Supercapacitor Electrodes with High Performance

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