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Hierarchical nanothorns MnCo2O4 grown on porous/dense Ni bi-layers coated Cu wire current collectors for high performance flexible solid-state fiber supercapacitors
Ji, Yaqiang; Xie, Jinqi; Wu, Jian; Yang, Ying; Fu, Xian-Zhu; Sun, Rong; Wong, Ching-Ping
2018
发表期刊JOURNAL OF POWER SOURCES
卷号393页码:54-61
摘要Cu wires are coated by porous/dense Ni bi-layers as current collectors through electroless plating and hydrogen bubble dynamic template electrodepostion methods. The unique coaxial composite current collectors can be beneficial from the high electrical/thermal conductivity of metal Cu core and high corrosion resistance of dense metal Ni coating as well as porous Ni substrate for growth of active materials. Furthermore, the metal wire current collectors have excellent flexibility and mechanical strength. Highly flexible solid-state fiber super capacitors are then fabricated by binder-free integrated electrodes of hierarchical MnCo2O4 nanothorns grown on porous/dense Ni bi-layers coated Cu wires. The fiber supercapacitors reach capacitance of 20.6 mF cm(-1) (54.8 mF cm(-2)) and energy density of 4.8 mu Wh cm(-1) (12.8 mu Wh cm(-2)) at a power density of 32.25 mu W cm(-1) (110 mu W cm(-2)). Moreover, the twist fiber supercapacitors show good rate capability and cycling stability. The outstanding performances of the fiber supercapacitors might be attributed to the hierarchically nanothorns MnCo2O4 active materials and the unique porous/dense Ni coated Cu wire current collectors. Our results can provide a novel strategy to design flexible nanostructure fiber supercapacitors for energy storage applications in future wearable electronics.
关键词High-energy Density Nico2o4 Nanosheets Carbon Cloth Electrodes Batteries Storage Hybrid Nanowires Catalysts Graphene
学科领域Engineering
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17296
专题2018专题
推荐引用方式
GB/T 7714
Ji, Yaqiang,Xie, Jinqi,Wu, Jian,et al. Hierarchical nanothorns MnCo2O4 grown on porous/dense Ni bi-layers coated Cu wire current collectors for high performance flexible solid-state fiber supercapacitors[J]. JOURNAL OF POWER SOURCES,2018,393:54-61.
APA Ji, Yaqiang.,Xie, Jinqi.,Wu, Jian.,Yang, Ying.,Fu, Xian-Zhu.,...&Wong, Ching-Ping.(2018).Hierarchical nanothorns MnCo2O4 grown on porous/dense Ni bi-layers coated Cu wire current collectors for high performance flexible solid-state fiber supercapacitors.JOURNAL OF POWER SOURCES,393,54-61.
MLA Ji, Yaqiang,et al."Hierarchical nanothorns MnCo2O4 grown on porous/dense Ni bi-layers coated Cu wire current collectors for high performance flexible solid-state fiber supercapacitors".JOURNAL OF POWER SOURCES 393(2018):54-61.
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