Hierarchical Mn-doped Fe2O3@rGO hollow core-shell spheres for high-performance hybrid capacitor

doi:10.1016/j.mtener.2020.100388

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Hierarchical Mn-doped Fe2O3@rGO hollow core-shell spheres for high-performance hybrid capacitor
	Zhang, Jijun 1; Wang, Yan 1; Liao, Hsiang-Ju 2,4; Yang, Tzu-Yi 2,4; Chen, Zexiang 1; Yan, Xinyu 1; Zhou, Zhiyu 1; lv, Huifang 1; Liu, Wen-Wu 3; Chueh, Yu-Lun 2,4
刊名	Materials Today Energy
	2020-09-01
卷号	17
关键词	Electrodes Graphene Hematite Manganese compounds Nanosheets Reduced Graphene Oxide Spheres Supercapacitor Cathode electrodes Electrochemical reactions High current densities Hollow core shells Hydrothermal growth Ni-Al LDH nanosheets Reduced graphene oxides (RGO) Specific capacities
DOI	10.1016/j.mtener.2020.100388
英文摘要	Herein, we use a facile one-step hydrothermal growth process to achieve hollow spheres assembled from Mn-doped Fe2O3 nanoparticles (NPs) coated by reduced graphene oxide (rGO) layers. This unique 3D nanostructure enables electrochemical reactions to occur easily and efficiently, increasing the active regions of redox reactions where remarkable electrochemical properties with specific capacity of 285 mAh g−1 (5.7 mAh cm−2) at 1 A g−1 (20 mA cm−2) with a high area loading of 20 mg cm−2. Cycle performance of 83.4% at 1 A g−1 over 1000 cycles is achieved, confirming high stability of the Mn-doped Fe2O3@rGO hollow sphere after the redox reaction. Even under high current density of 16 A g−1, capacity retention of 64.4% is demonstrated, representing good rate capability. Furthermore, hybrid capacitor (HC) devices consisting of the as-prepared 3D Mn-doped Fe2O3@rGO as the anode electrode and NiAl-LDH nanosheets as the cathode electrode with an superior maximum energy density of 102.0 Wh kg−1 at the power density of 1.1 kW kg−1 were demonstrated and the energy density of 56.0 Wh kg−1 remains at the power density of 10.1 kW kg−1. © 2020 Elsevier Ltd
语种	英语
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115726]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, North Jianshe Road 4, Chengdu; 610054, China; 2.Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu; 30013, Taiwan; 3.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 4.Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu; 30012, Taiwan
推荐引用方式 GB/T 7714	Zhang, Jijun,Wang, Yan,Liao, Hsiang-Ju,et al. Hierarchical Mn-doped Fe2O3@rGO hollow core-shell spheres for high-performance hybrid capacitor[J]. Materials Today Energy,2020,17.
APA	Zhang, Jijun.,Wang, Yan.,Liao, Hsiang-Ju.,Yang, Tzu-Yi.,Chen, Zexiang.,...&Chueh, Yu-Lun.(2020).Hierarchical Mn-doped Fe2O3@rGO hollow core-shell spheres for high-performance hybrid capacitor.Materials Today Energy,17.
MLA	Zhang, Jijun,et al."Hierarchical Mn-doped Fe2O3@rGO hollow core-shell spheres for high-performance hybrid capacitor".Materials Today Energy 17(2020).