Effect of temperature on physicochemical properties of straw biochar: focus on surface appearance and electrochemical properties

被引：0

作者：

Wang J. ^{[1
]}

Zhang P. ^{[2
]}

Zhang S. ^{[2
]}

Liu S. ^{[1
]}

Lu J. ^{[1
]}

Wen P. ^{[1
]}

机构：

[1] College of Mechanical and Electrical Engineering, He'nan Agricultural University, Zhengzhou

[2] School of Energy and Intelligence Engineering, He'nan University of Animal Husbandry and Economy, Zhengzhou

来源：

Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 05期

关键词：

Biochar; Electrochemistry; Physicochemical properties; Pyrolysis temperature; Straw;

D O I：

10.19912/j.0254-0096.tynxb.2021-1268

中图分类号：

学科分类号：

摘要：

The programmed heating and oxygen limiting method technique is used to prepare wheat straw biochar at different temperatures. The effect of carbonization temperature on surface morphology, functional groups and physicochemical properties with the increase of carbonization temperature are investigated. Then, electrode is designed based on biochar and its electrochemical performance is evaluated. The results show that the biochar retains the multilayer bundle structure of straw cellulose, which is layered and non-uniform slit pore. Straw biochar has excellent capacitance properties, and the electrochemical performance of WB600 ℃ biochar is the most prominent. It has been observed from FTIR results that when the carbonization temperature is ≥600 ℃, there are several weak scattered between 1430-1870 cm-1. This is due to the thermal fusion of the crystal structure of lignin with the increase of carbonization temperature. The - CH== group in biochar is transformed into C==O group, resulting in ketones with ring structure is formed. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.

引用

页码：399 / 404

页数：5

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