Synthesis of ultra-high specific surface area trimetallic NiCoMg-LDH hollow cage via bimetallic ion etching for hybrid supercapacitors

doi:10.1007/s11581-024-05493-6

	Synthesis of ultra-high specific surface area trimetallic NiCoMg-LDH hollow cage via bimetallic ion etching for hybrid supercapacitors
	Lan, Yongzhi 1; Yu, Rui 1; Wang, Qing1,2 ; Dai, Jianfeng1,2
	2024-03-26
在线发表时间	2024-03
发表期刊	IONICS
ISSN	0947-7047
摘要	A trimetallic layered double hydroxide (LDH), NiCoMg-LDH, was rationally designed and synthesized in this paper by hydrolytic etching of Ni2+ and Mg2+ using Co-MOF as a conversion template, during which the rhombic dodecahedral structure of Co-MOF was etched to form a hollow cage structure overlaid with nanosheets on the surface. In comparison to the NiCo-LDH prepared by monometallic ion etching, the NiCoMg-LDH prepared in this study has a larger specific surface area and a more stable hollow porous structure, which can provide a large number of active sites for redox reactions as well as ion transport channels. The trimetallic Ni1Co1Mg-LDH has a higher specific capacity of 2141.62 F g-1 (208.21 mAh g-1) at 1 A g-1 current density compared to the NiCo-LDH. It also keeps 83.61% of its specific capacity after 5000 cycles at 10 A g-1. It also performs well in rate capacity, with a capacity retention rate of 74.49% at 20 A g-1. With Ni1Co1Mg-LDH serving as the positive electrode and AC serving as the negative electrode, the hybrid supercapacitor (HSC) exhibits a high energy density of 61.65 Wh kg-1 at a power density of 800.02 W kg-1. After 10,000 cycles of charge and discharge, 80.17% of the capacity was retained. This study demonstrates that the trimetallic LDH structure generated using bimetallic ion etching with MOF as a template can increase the performance and stability of supercapacitors.
关键词	NiCoMg-LDH Bimetallic ion etching Supercapacitor Specific surface area
DOI	10.1007/s11581-024-05493-6
收录类别	SCIE ; EI
语种	英语
资助项目	HongLiu First-class Disciplines Development Program of Lanzhou University of Technology
WOS研究方向	Chemistry ; Electrochemistry ; Physics
WOS类目	Chemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
WOS记录号	WOS:001192214000001
出版者	SPRINGER HEIDELBERG
EI入藏号	20241315823551
EI主题词	Supercapacitor
EI分类号	701.1 Electricity: Basic Concepts and Phenomena ; 704.1 Electric Components ; 802.2 Chemical Reactions
原始文献类型	Article;Early Access
EISSN	1862-0760
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/170194
专题	能源与动力工程学院理学院
通讯作者	Wang, Qing
作者单位	1.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	理学院
通讯作者单位	理学院; 省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	理学院
推荐引用方式 GB/T 7714	Lan, Yongzhi,Yu, Rui,Wang, Qing,et al. Synthesis of ultra-high specific surface area trimetallic NiCoMg-LDH hollow cage via bimetallic ion etching for hybrid supercapacitors[J]. IONICS,2024.
APA	Lan, Yongzhi,Yu, Rui,Wang, Qing,&Dai, Jianfeng.(2024).Synthesis of ultra-high specific surface area trimetallic NiCoMg-LDH hollow cage via bimetallic ion etching for hybrid supercapacitors.IONICS.
MLA	Lan, Yongzhi,et al."Synthesis of ultra-high specific surface area trimetallic NiCoMg-LDH hollow cage via bimetallic ion etching for hybrid supercapacitors".IONICS (2024).