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Design of a high performance electrode composed of porous nickel-cobalt layered double hydroxide nanosheets supported on vertical graphene fibers for flexible supercapacitors

文献类型：期刊论文

作者Song, Yanping2; Zhang, Jixiang2; Li, Nian3; Han, Shuai1,3; Xu, Shihao1,3; Yin, Jun2; Qu, WanLi2; Liu, Cui3; Zhang, Shudong3; Wang, Zhenyang3
刊名NEW JOURNAL OF CHEMISTRY
出版日期2020-04-28
卷号44
ISSN号1144-0546
DOI10.1039/d0nj00477d
通讯作者Zhang, Jixiang(jixiangzhang@163.com) ; Li, Nian(linian@issp.ac.cn) ; Wang, Zhenyang(zywang@iim.ac.cn)
英文摘要The micro/nanostructure of electrode materials is one of the key factors affecting the performance of supercapacitors. Here, a hybrid electrode composed of nickel-cobalt layered double hydroxide (NC-LDH) nanosheets supported on vertical graphene fibers was designed for flexible supercapacitors. An efficient and low-cost laser-induced technology was explored to synthesize vertical graphene fibers using polyphenylene sulfide (PPS) as a precursor. By double laser writing in two directions perpendicular to each other, laser-induced graphene (LIG) fibers with improved conductivity and optimized morphology were achieved. As a result, porous NC-LDH nanosheets with high specific capacitance can be uniformly loaded onto LIG fibers by the electrodeposition method. The as-obtained composite with fast electron transfer and efficient ion transport properties was used as a supercapacitor electrode, achieving an ultrahigh specific capacitance of 4503 mF cm(-2) at 1.0 mA cm(-2) in a standard three-electrode system. Furthermore, a flexible asymmetric supercapacitor (ASC) was successfully assembled using NC-LDH/LIG as the positive electrode and activated carbon as the negative electrode with the PVA-KOH gel electrolyte, obtaining a high energy density of 219 mu W h cm(-2) at a power density of 378 mu W cm(-2). These excellent electrochemical properties are attributed to the rational structural design of the electrode and the synergistic effect of each electrode component, which exhibits great application prospects in flexible energy storage devices.
WOS关键词SULFUR-DOPED GRAPHENE ; HIGH-ENERGY ; CARBON ; NITROGEN ; NANOWIRES ; FACILE ; ARRAYS ; OXIDE ; EXFOLIATION ; ULTRATHIN
资助项目National Natural Science Foundation of China[61605222] ; Innovative Program of the Development Foundation of Hefei Center for Physical Science and Technology[2017FXCX006] ; Youth spark of the Chinese Academy of China[YZJJ2018QN25]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000531201500054
出版者ROYAL SOC CHEMISTRY
资助机构National Natural Science Foundation of China ; Innovative Program of the Development Foundation of Hefei Center for Physical Science and Technology ; Youth spark of the Chinese Academy of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/103263]  
专题中国科学院合肥物质科学研究院
通讯作者Zhang, Jixiang; Li, Nian; Wang, Zhenyang
作者单位1.Univ Sci & Technol China, Dept Chem, Hefei, Anhui, Peoples R China
2.Chongqing Jiaotong Univ, Sch Mechanotron & Vehicle Engn, Chongqing, Peoples R China
3.Chinese Acad Sci, Inst Intelligent Machines, Hefei, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Song, Yanping,Zhang, Jixiang,Li, Nian,et al. Design of a high performance electrode composed of porous nickel-cobalt layered double hydroxide nanosheets supported on vertical graphene fibers for flexible supercapacitors[J]. NEW JOURNAL OF CHEMISTRY,2020,44.
APA Song, Yanping.,Zhang, Jixiang.,Li, Nian.,Han, Shuai.,Xu, Shihao.,...&Wang, Zhenyang.(2020).Design of a high performance electrode composed of porous nickel-cobalt layered double hydroxide nanosheets supported on vertical graphene fibers for flexible supercapacitors.NEW JOURNAL OF CHEMISTRY,44.
MLA Song, Yanping,et al."Design of a high performance electrode composed of porous nickel-cobalt layered double hydroxide nanosheets supported on vertical graphene fibers for flexible supercapacitors".NEW JOURNAL OF CHEMISTRY 44(2020).

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来源：合肥物质科学研究院

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