利用少量氧化镍负载提高活性炭比电容

doi:10.11896/cldb.19050030

材料导报

2021, Vol. 35

Issue (4): 4012-4016 https://doi.org/10.11896/cldb.19050030

无机非金属及其复合材料

利用少量氧化镍负载提高活性炭比电容

李诗杰¹, 韩奎华²

1 山东建筑大学热能工程学院,济南 250101
2 山东大学能源与动力工程学院,济南 250012

Using a Small Amount of Nickel Oxide to Increase the Specific Capacitance of Activated Carbon

LI Shijie¹, HAN Kuihua²

1 School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101,China
2 School of Energy and Power Engineering, Shandong University, Jinan 250012,China

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摘要为提高活性炭电极材料的比电容,本实验采用低浓度碱式碳酸镍溶液对活性炭进行氧化镍表面负载,利用碱式碳酸镍的热解特性,在引入赝电容的同时,减小负载对活性炭原有孔隙结构的影响,从而在引入赝电容的同时较好地保留活性炭的双电层电容。本实验还研究了不同数量氧化镍负载对活性炭孔结构和电化学性能的影响。实验结果表明:氧化镍负载改性后,活性炭在较好保留了原有孔隙结构的基础上,还在孔结构表面均匀负载了大量的纳米级氧化镍,改性后活性炭电极材料引入了赝电容,活性炭的比电容性能得到明显改善,且随着氧化镍负载数量的增多,活性炭比电容性能逐渐提高。

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	李诗杰
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关键词: 活性炭氧化镍双电层电容赝电容比电容

Abstract: Low concentration basic nickel carbonate was used to load sargassum-based activated carbon on nickel oxide surface to improve the gravimetric capacitance of activated carbon. Based on the pyrolysis characteristics of basic nickel carbonate, the pseudocapacitance was introduced, and the effect of modification on the original pore structure of activated carbon was reduced, thus, the double layer capacitance of activated carbon was better retained while the pseudo capacitance was introduced. The effects of nickel oxide loading on pore structure and electrochemical properties of sargassum-based activated carbon were studied. The results show that: after nickel oxide loading modification, activated carbon retains the original pore structure well, and loads a large amount of nano-scale nickel oxide on the surface of pore structure evenly. After modification, the pseudocapacitance was introduced into the activated carbon electrode material. The gravimetric capacitance of activated carbon has been significantly improved, and with the increase of nickel oxide loading concentration, the electrochemical properties of activated carbon has gradually improved.

Key words: activated carbon nickel oxide double layer capacitance pseudocapacitance gravimetric capacitance

出版日期: 2021-02-25 发布日期: 2021-02-23

ZTFLH:

TQ150

基金资助: 山东建筑大学博士科研基金(XNBS1838)

通讯作者: lishijie18@sdjzu.edu.cn

作者简介: 李诗杰,2018年6月毕业于山东大学能源与动力工程学院,获得工学博士学位。同年9月入职山东建筑大学热能工程学院教师。研究方向主要是碳基能源材料及储能、生物质热化学转化。在国内外重要期刊以第一作者身份发表SCI/EI期刊10余篇。

引用本文:

李诗杰, 韩奎华. 利用少量氧化镍负载提高活性炭比电容[J]. 材料导报, 2021, 35(4): 4012-4016.
LI Shijie, HAN Kuihua. Using a Small Amount of Nickel Oxide to Increase the Specific Capacitance of Activated Carbon. Materials Reports, 2021, 35(4): 4012-4016.

链接本文:

http://www.mater-rep.com/CN/10.11896/cldb.19050030 或 http://www.mater-rep.com/CN/Y2021/V35/I4/4012

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