秸秆基碳材料在Li2SO4电解液中的电化学性能

doi:10.11949/j.issn.0438-1157.20171622

化工学报 ›› 2018, Vol. 69 ›› Issue (7): 3293-3299.DOI: 10.11949/j.issn.0438-1157.20171622

• 材料化学工程与纳米技术 • 上一篇

秸秆基碳材料在Li₂SO₄电解液中的电化学性能

陈张豪¹, 马洪芳^1,2, 朱汉飞³, 王晓丹¹, 刘鑫鑫¹, 许朝贵², 杨娟娟²

1 山东建筑大学材料科学与工程学院, 山东济南 250101;
2 齐鲁工业大学(山东省科学院)环境科学与工程学院, 山东济南 250353;
3 齐鲁工业大学(山东省科学院)化学与制药工程学院, 山东济南 250353

收稿日期:2017-12-11 修回日期:2018-04-13 出版日期:2018-07-05 发布日期:2018-07-05
通讯作者: 马洪芳
基金资助:
山东省重点研发计划（2017GGX202010）。

Electrochemical properties of straw-based carbon materials in Li₂SO₄ electrolyte

CHEN Zhanghao¹, MA Hongfang^1,2, ZHU Hanfei³, WANG Xiaodan¹, LIU Xinxin¹, XU Zhaogui², YANG Juanjuan²

1 School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, China;
2 School of Environmental Science and Engineering, Qilu University of Technology(Shandong Academy of Sciences), Jinan 250353, Shandong, China;
3 School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology(Shandong Academy of Sciences), Jinan 250353, Shandong, China

Received:2017-12-11 Revised:2018-04-13 Online:2018-07-05 Published:2018-07-05
Supported by:
supported by the Key Research and Development Plan of Shandong (2017GGX202010).

摘要/Abstract

摘要：

以生物质秸秆为碳源，利用水热结合KOH活化法制备了多孔碳材料，对其结构与形貌进行了表征。采用三电极体系，在不同浓度的Li₂SO₄电解液中，对多孔碳电极进行循环伏安、恒电流充放电和交流阻抗测试。结果表明，在0.5 mol·L^-1的Li₂SO₄电解液中，秸秆基生物质碳材料呈现出较好的电化学性能。当电流密度为0.5 A·g^-1时，比电容可达224 F·g^-1；经1500次充放电测试后，比电容保持率高达94.1%，循环性能良好。

关键词: 生物质, 活化, 水热法, 多孔碳, 电化学

Abstract:

The porous carbon materials were synthesized from the straw by hydrothermal method coupled with KOH activation, of which the structure and morphology were characterized. The electrochemical properties of the porous carbon materials were evaluated by the cyclic voltammetry, galvanostatic charge/discharge and AC impedance tests in Li₂SO₄ electrolyte with different concentrations using a three electrodes electrochemical system. The results showed that the porous carbon materials have the best electrochemical performances in 0.5 mol·L^-1 Li₂SO₄ electrolyte. The specific capacitance of porous carbon materials can reach 224 F·g^-1 at a current density of 0.5 A·g^-1, with specific capacitance retention of over 94.1% after the 1500 charge/discharge cycles, which indicates a good cycle characteristics.

Key words: biomass, activation, hydrothermal method, porous carbon, electrochemistry

中图分类号:

TB32

陈张豪, 马洪芳, 朱汉飞, 王晓丹, 刘鑫鑫, 许朝贵, 杨娟娟. 秸秆基碳材料在Li₂SO₄电解液中的电化学性能[J]. 化工学报, 2018, 69(7): 3293-3299.

CHEN Zhanghao, MA Hongfang, ZHU Hanfei, WANG Xiaodan, LIU Xinxin, XU Zhaogui, YANG Juanjuan. Electrochemical properties of straw-based carbon materials in Li₂SO₄ electrolyte[J]. CIESC Journal, 2018, 69(7): 3293-3299.

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秸秆基碳材料在Li₂SO₄电解液中的电化学性能

Electrochemical properties of straw-based carbon materials in Li₂SO₄ electrolyte

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