Two-step electrodeposition synthesis of nano-clustered Ni@NiCo-LDH heterostructure as cathodes for high-performance hybrid supercapacitors

doi:10.1016/j.electacta.2024.144031

	Two-step electrodeposition synthesis of nano-clustered Ni@NiCo-LDH heterostructure as cathodes for high-performance hybrid supercapacitors
	Yu, Rui 1; Li, Zhaokuan 1; Lan, Yongzhi 1; Wang, Qing1,2 ; Dai, Jianfeng1 ; Lu, XueFeng1
	2024-04-10
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	483
摘要	In situ-grown porous structures enhance electrode material contact area with electrolyte, decrease ion propagation distance, as well as improve the electrochemical properties of electrode materials. The Ni@NiCo-LDH/CF heterostructure was effectively built by employing copper foam as the collector, the Ni layer as a connecting layer as a super channel for electron transport, and then secondary electrodeposition of NiCo-LDH. In comparison to primary Ni plating or primary NiCo-LDH plating, the nano-clustered Ni@NiCo-LDH/CF obtained by two-step electric deposition methods has exceptional electrochemical properties, including a high specific capacitance of 1620 F g−1 at 1 A g−1, excellent cycling stability, and rate performance (1143 F g−1 at 10 A g−1 and retaining 93.7 % after 5000 cycles). In addition, the hybrid supercapacitor assembled with activated carbon serving as the negative electrode has a capacity retention of 78.18 % after 12,000 cycles at 10 A g−1 and an extremely high energy density of 66.6 Wh kg−1 at 808 W kg−1. Furthermore, DFT studies suggest that Ni@NiCo-LDH/CF has a larger density of states (DOS) around the Fermi energy level. It offers suggestions for making high-energy-density electrodes. © 2024 Elsevier Ltd
关键词	Activated carbon Cathodes Electrochemical deposition Electrochemical electrodes Electrochemical properties Electrolytes Electron transport properties Porosity Reduction Copper foam Electrochemical deposition Electrode material Higher energy density Hybrid supercapacitors Layered-double hydroxides Performance Porous structures Situ grown Two-step electrodepositions
DOI	10.1016/j.electacta.2024.144031
收录类别	EI
语种	英语
出版者	Elsevier Ltd
EI入藏号	20241015708132
EI主题词	Supercapacitor
EI分类号	539 Metals Corrosion and Protection ; Metal Plating ; 702 Electric Batteries and Fuel Cells ; 704.1 Electric Components ; 801.4.1 Electrochemistry ; 802.2 Chemical Reactions ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 931.2 Physical Properties of Gases, Liquids and Solids
原始文献类型	Journal article (JA)
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/169973
专题	能源与动力工程学院材料科学与工程学院理学院
通讯作者	Wang, Qing
作者单位	1.School of Science, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Yu, Rui,Li, Zhaokuan,Lan, Yongzhi,et al. Two-step electrodeposition synthesis of nano-clustered Ni@NiCo-LDH heterostructure as cathodes for high-performance hybrid supercapacitors[J]. Electrochimica Acta,2024,483.
APA	Yu, Rui,Li, Zhaokuan,Lan, Yongzhi,Wang, Qing,Dai, Jianfeng,&Lu, XueFeng.(2024).Two-step electrodeposition synthesis of nano-clustered Ni@NiCo-LDH heterostructure as cathodes for high-performance hybrid supercapacitors.Electrochimica Acta,483.
MLA	Yu, Rui,et al."Two-step electrodeposition synthesis of nano-clustered Ni@NiCo-LDH heterostructure as cathodes for high-performance hybrid supercapacitors".Electrochimica Acta 483(2024).