镍钴硫化物/碳微球电极的制备与电化学性能测试
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摘要
采用水热法通过设置反应物的不同比例制备了不同镍钴比的硫化物,利用X射线衍射仪与扫描电子显微镜对制备产物进行表征。以制备产物为活性物质、碳微球为导电剂、泡沫镍为基体制备出可测电极。通过循环伏安法(CV)与恒电流充放电等电化学方法分析测试了不同电极的电化学性能。反应物中镍含量为50%(质量分数)的电极,其CV曲线表现出较大的氧化还原电流密度,且在测试条件下具有最高的比电容938.7F/g。
Nickel cobalt sulfide was prepared by hydrothermal synthesis with different Ni/CO ratios of reactants.The products were characterized by X ray diffractometer and scanning electron microscope.The measurable electrode was prepared by using the prepared product as the active substance,the carbon microsphere as the conductive agent and the nickel foam as the matrix.The electrochemical properties of different electrodes were tested by cyclic voltammetry and constant current charge discharge.The electrode CV curve with a nickel content of 50% in the reactants showed a larger redox current density and the highest specific capacitance of 938.7 F/g.
Nickel cobalt sulfide was prepared by hydrothermal synthesis with different Ni/CO ratios of reactants.The products were characterized by X ray diffractometer and scanning electron microscope.The measurable electrode was prepared by using the prepared product as the active substance,the carbon microsphere as the conductive agent and the nickel foam as the matrix.The electrochemical properties of different electrodes were tested by cyclic voltammetry and constant current charge discharge.The electrode CV curve with a nickel content of 50% in the reactants showed a larger redox current density and the highest specific capacitance of 938.7 F/g.
引文
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[3]万厚钊,缪灵,徐葵,等.MnO2基超级电容器电极材料[J].化工学报,2013,64(3):801-813.
[4]Bonu V,Gupta B,Chandra S,et al.Electrochemical supercapacitor performance of SnO2quantum dots[J].Electrochimica Acta,2016,203:230-237.
[5]肖富强,袁大庆,朱升云,等.超级电容器用镍钴硫化物电极材料的研究进展[J].功能材料,2017,48(9):9001-9006.
[6]叶星柯,周乾隆,万中全,等.柔性超级电容器电极材料与器件研究进展[J].化学通报,2017,80(1):10-33,76.
[7]朱红艳,赵建国,庞明俊,等.石墨烯/δ-MnO2复合材料的制备及其超级电容器性能[J].化工学报,2017,68(12):4824-4832.
[8]Ajay K M,Dinesh M N.Influence of various activated carbon based electrode materials in the performance of super capacitor[J].IOP Conference Series:Materials Science and Engineering,2018,310(1):1-8.
[9]Jamil A,Mustafa F,Aslam S,et al.Structural and optical properties of thermally reduced graphene oxide for energy devices[J].Chinese Physics B,2017,26(8):346-352.
[10]李雪芹,常琳,赵慎龙,等.基于碳材料的超级电容器电极材料的研究[J].物理化学学报,2017,33(1):130-148.
[11]于美,李新杰,马玉骁,等.石墨烯基复合超级电容器材料研究进展[J].材料工程,2016,44(5):101-111.
[12]孙刚伟.碳基超级电容器正负极不对称电容行为研究[D].上海:华东理工大学,2012.
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[14]高阳,多元金属硫化物电极材料的制备及其超级电容器性能的研究[D].郑州:郑州大学,2015.
[15]余大江,多元镍钴化合物电极材料的制备及其电化学储能研究[D].杭州:浙江理工大学,2015.
[16]纪莹.锰/钴/镍基硫族化合物的合成及其电化学性质的研究[D].长春:吉林大学,2015.
[17]廖明佳,乔雷,陈海岸,等.镍钴硫化物的制备及其反应温度对形貌和超级电容器性能的影响[J].重庆大学学报,2016,39(6):95-100.
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[19]Zhu Yirong,Wu Zhibin,Jing Mingjun,et al.Mesoporous NiCo2S4nanoparticles as high-performance electrode materials for supercapacitors[J].Journal of Power Sources,2015,273:584-590.
[20]蔡婷婷,张梦莹,刘镕玮,等.碳微球的水热法制备与表征[J].信息记录材料,2017,18(8):49-50.