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化工新型材料  2018, Vol. 46 Issue (4): 122-125    
  科学研究 本期目录 | 过刊浏览 | 高级检索 |
基底对CoS电极材料电化学性能的影响研究
张建强1, 张韵1,2, 李小成2
1.兰州理工大学石油化工学院,兰州730050;
2.中国科学院兰州化学物理研究所清洁能源化学与材料实验室,兰州730000
Study on the effect of substrate on the electrochemical performance of CoS material
Zhang Jianqiang1, Zhang Yun1,2, Li Xiaocheng2
1.School of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050;
2.Laboratory of Clean Energy Chemistry and Materials,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000
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摘要 以六水合氯化钴(CoCl2·6H2O)为钴源、硫脲[CS(NH2)2]为硫源,采用电化学沉积法分别在泡沫镍(NF)和三维石墨烯(3D GE)/泡沫镍(3D GE/NF)两种基底上制备三维硫化钴/石墨烯/泡沫镍(3D CoS/GE/NF)和硫化钴(CoS)/泡沫镍(CoS/NF)电极。通过考察NF与3D GE/NF两种基底对电极电化学性能的影响,可知3D GE/NF基底由于具有高品质、高导电性的石墨烯,促进了电极与电解液的电荷传输,能够有效提高电极材料的比容量和循环倍率性能。在1A/g电流密度下,3D CoS/GE/NF比容量达到2320F/g,高于CoS/NF电极的比容量(1269F/g),即使在20A/g时,3D CoS/GE/NF电极比容量仍有1638F/g,且在10A/g大电流密度下经过500次循环后,3D CoS/GE/NF的比容量保持率为73.44%,远远高于CoS/NF的比容量保持率(44.69%)。
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张建强
张韵
李小成
关键词:  硫化钴  泡沫镍  三维石墨烯  超级电容器    
Abstract: CoS materials were prepared via electrodeposition using CoCl2·6H2O as cobalt source and CS(NH2)2 as sulfide source.Nickel foam (NF) and 3D graphene/nickel foam (3D GE/NF) were used as substrates,respectively.3D CoS/GE/NF and CoS/NF electrodes were obtained.The effect of NF and 3D GE/NF substrate on the electrochemical performance of CoS was investigated.The results indicated that 3D GE/NF substrate could promote the charge transfer between electrode and electrolyte due to the existence of high-quality and high-conductivity graphene.At current density of 1A/g,the specific capacitance of 3D CoS/GE/NF was 2320F/g which was higher than that of CoS/NF (1269F/g).Even at current density of 20A/g,the specific capacitance was still 1638F/g.The specific capacitance of 3D CoS/GE/NF would remain as 73.44% after 500 cycles at high current density of 10A/g.This value was much higher than that of CoS/NF electrode was 44.69%.
Key words:  cobalt sulfide    nickel foam    three-dimensional graphene    supercapacitor
收稿日期:  2017-01-03                出版日期:  2018-04-20      发布日期:  2018-05-17      期的出版日期:  2018-04-20
基金资助: 国家自然科学基金(21364004)
作者简介:  张建强(1976-),男,博士,副教授,主要从事化工新材料的研究。
引用本文:    
张建强, 张韵, 李小成. 基底对CoS电极材料电化学性能的影响研究[J]. 化工新型材料, 2018, 46(4): 122-125.
Zhang Jianqiang, Zhang Yun, Li Xiaocheng. Study on the effect of substrate on the electrochemical performance of CoS material. New Chemical Materials, 2018, 46(4): 122-125.
链接本文:  
http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2018/V46/I4/122
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