Sustainable production of oxygen-rich hierarchically porous carbon network from corn straw lignin and silk degumming wastewater for high-performance electrochemical energy storage

Man Zhou, Kai Li, Jinguang Hu, Liping Tang, Mingliu Li, Lifang Su, Hong Zhao, Frank Ko, Zaisheng Cai and Yaping Zhao

Renewable Energy, 2022, vol. 191, issue C, 141-150

Abstract: Herein, a clean, green, and sustainable strategy is presented to prepare a high-performance energy storage material, the sericin-lignin derived hierarchically porous carbon materials (SLHPCs). Extracted from biomass waste, corn straw lignin and sericin from silk degumming wastewater are endowed with a high added value. Combining the cross-linking reaction between lignin and sericin and the porogen role of sericin, the as-prepared SLHPC-2 possesses an advantageous pore structure, a high BET specific surface area (1948.4 m2 g−1) with a superior mesoporous area (598.6 m2 g−1). The high in-situ oxygen doping (14%) is simultaneously realized. It exhibits remarkable electrochemical properties and displays the universality in either alkali, acid, or neutral electrolytes as supercapacitor (SC) electrodes. The as-assembled symmetrical button-type SLHPC-based SC transmits a high energy density of 17.0 Wh kg−1 at a power density of 500.1 W kg−1 and retains 13.3 Wh kg−1 at 10.0 kW kg−1. The porogen role of sericin can be extended to be a universal fabrication of biomass wastes-based hierarchically porous carbon material. The proposed recycling strategy of biomass waste resources paves the way for new applications in energy storage.

Keywords: Lignin; Sericin; Biomass waste; Hierarchically porous carbon; Energy storage (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:191:y:2022:i:c:p:141-150

DOI: 10.1016/j.renene.2022.04.037

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