Functionalization of supercapacitors electrodes oriented hydrochar from cornstalk: A new vision via biomass fraction

文献类型： 外文期刊

第一作者： Jia, Jixiu

作者： Jia, Jixiu;Sun, Yuxuan;Liu, Zhidan;Jia, Jixiu;Yao, Zonglu;Zhao, Lixin;Xie, Teng;Tian, Liwei;Huo, Lili;Jia, Jixiu;Zhao, Lixin;Huo, Lili

作者机构： China Agr Univ, Coll Water Resources & Civil Engn, Lab Environm Enhancing Energy E2E, Key Lab Agr Engn Struct & Environm, Beijing 100083, Peoples R China;CAAS, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China;Minist Agr & Rural Affairs, Key Lab Low Carbon Green Agr North China, Beijing, Peoples R China

关键词： Corn stalks; Hydrothermal carbonization; Supercapacitor; Different fractions; Porous carbons; KOH activation

期刊名称：BIOMASS & BIOENERGY （ 2022影响因子：6.0； 五年影响因子：5.3 ）

ISSN： 0961-9534

年卷期： 2023 年 175 卷

页码：

收录情况： SCI

摘要： The development of corn stalk-based carbon materials presents a promising approach towards sustainable energy storage and agricultural waste valorization. However, the impact of varying portions of the cornstalk on electrochemical performance has been previously disregarded. An innovative strategy is proposed herein for the preparation of supercapacitor electrodes from different fractions of the same corn stalks via hydrothermal carbonization and KOH activation. The potential of the resulting composition, morphology structure, and electrochemical performance was analyzed to evaluate its suitability for supercapacitor electrodes. The capacity of CC-carbons could reach up to 133.32 F g-1 at 1 A g-1 and exhibit excellent electrochemical properties owing to their highly specific surface area (812.84 m2 g-1) in combination with their abundant active sites. Moreover, the leaf blade (LB) was found unsuitable for preparing porous carbon. The results further revealed that the high lignin content increased the material's defects and active sites. Additionally, inorganic components present in raw materials may remain in the activated carbons in the form of ash through mineralization reactions, thereby affecting pore formation and charge ion transport. The outcomes of this study provide a novel perspective on the high-value utilization of corn stalks.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序