Waste bio-tar based N-doped porous carbon for supercapacitors under dual activation: performance, mechanism, and assessment

文献类型： 外文期刊

第一作者： Jia, Jixiu

作者： Jia, Jixiu;Sun, Yuxuan;Liu, Ziyun;Huo, Lili;Zhao, Yanan;Zhao, Lixin;Xie, Teng;Yao, Zonglu;Jia, Jixiu;Sun, Yuxuan;Liu, Zhidan;Cao, Maojiong;Kang, Kang;Kang, Kang

作者机构：

关键词： Bio-tar; Dual activation; Techno-economic assessment; Porous carbon; N-doping; Supercapacitors

期刊名称：BIOCHAR （ 影响因子：12.7； 五年影响因子：13.1 ）

ISSN： 2524-7972

年卷期： 2023 年 5 卷 1 期

页码：

收录情况： SCI

摘要： Bio-tar extra-produced from biomass pyrolysis is prone to pose a threat to environment and human health. A novel N-doped porous electrode from bio-tar was produced under dual-activation of urea and KOH in this study. One-pot dual-activation played significant roles in N-functional group and micro-mesoporous structure, which resulted in the carbon material with the highest of nitrogen content (4.08%) and the special surface area (1298.26 m2 center dot g-1). Specifically, the potential mechanisms of pore formation and N-doping in the one-pot dual-activation strategy were also proposed as a consequence, the one-pot dual-activated carbon material displayed excellent electrochemical performance with the highest capacitance of 309.5 F center dot g-1 at 0.5 A center dot g-1, and the unipolar specific capacitance remained with cyclic characteristics of 80.1% after 10,000 cycles in two-electrode symmetric system. Furthermore, the one-pot dual-activation strategy could create a profit of $1.64-$2.38 per kilogram of bio-tar processed without considering the initial investment and labor costs, which provides new perspectives for the utilization of waste bio-tar. Coupling urea with KOH preferentially formed a micro-mesoporous biocarbon structure.Potential mechanisms of one-pot dual activation of biocarbon were proposed.The preparation of porous carbon from bio-tar can bring considerable economic benefits.

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