Synthesis of Oxygen/Nitrogen/Sulfur Codoped Hierarchical Porous Carbon from Enzymatically Hydrolyzed Lignin for High-Performance Supercapacitors

Medientyp: E-Book

Titel: Synthesis of Oxygen/Nitrogen/Sulfur Codoped Hierarchical Porous Carbon from Enzymatically Hydrolyzed Lignin for High-Performance Supercapacitors

Beteiligte: Shi, Feiyan [Verfasser:in]; Tong, Yao [Verfasser:in]; Li, Hongsheng [Verfasser:in]; Xiao, Jiatong [Verfasser:in]; Wang, Wenhui [Verfasser:in]; Zhao, Xinyu [Verfasser:in]; Wu, Shenghan [Verfasser:in]; Zhai, Shangru [Verfasser:in]; An, Qingda [Verfasser:in]; Wang, Kai [Verfasser:in]

Erschienen: [S.l.]: SSRN, [2022]

Umfang: 1 Online-Ressource (25 p)

Sprache: Englisch

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Beschreibung: Heteroatom codoped porous carbon materials prepared from low cost lignin play a valuable role in the sustainable development of supercapacitors. Herein, aminated enzymatically hydrolyzed lignin (EHL) through Mannich reaction was subjected to a novel one-step carbonization activation route to fabricate O/N/S codoped hierarchical porous three-dimensional carbon (ONS-HPC) with KOH as the activation agent. The EHL-derived carbon materials possessed high specific surface area, abundant porous structure, and multi-heteroatoms with high doping density (9.17–13.38 at.%). Given the above synergistic effect, the ONS-HPC electrode exhibited a superior specific capacitance of 292 F g −1 at 0.5 A g −1 and excellent rate capability of 67 % capacity retention at 50 A g −1 . The fabricated asymmetric supercapacitor device based on the ONS-HPC delivered a remarkable energy density of 16.7 W h kg −1 at the power density of 249.5 W kg −1 and ultralong cycle-lifetime with 99.58% capacitance retention after 10,000 cycles. This result suggests the successful conversion of economical natural lignin to sustainable high-performance porous carbon electrode for supercapacitor via a facile and low-cost synthetic strategy

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