Preparation and electrochemical properties of mesoporous α-Fe2O3 nanowires for supercapacitor application

被引:9
作者
Wu, Huijie [1 ]
Li, Yuan [2 ]
Xiao, Wei [1 ]
Tian, Liangliang [3 ]
Song, Jing [4 ]
机构
[1] Chongqing Univ Arts & Sci, Sch Mat Sci & Engn, Chongqing 402160, Peoples R China
[2] Southwest Univ, Sch Mat & Energy, Chongqing 400715, Peoples R China
[3] Chongqing Univ Arts & Sci, Sch Elect Informat & Elect Engn, Chongqing 402160, Peoples R China
[4] Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
关键词
ONE-POT SYNTHESIS; GRAPHENE OXIDE COMPOSITES; NITROGEN-DOPED GRAPHENE; HIGH-PERFORMANCE; ELECTRODE MATERIALS; NEGATIVE ELECTRODE; ENERGY-CONVERSION; NANOTUBE ARRAYS; FE2O3; NANOSTRUCTURES;
D O I
10.1007/s10854-023-10456-0
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Mesoporous alpha-Fe2O3 nanowires have been prepared through solid-state thermal conversion of ferrous oxalate dihydrate precursor for supercapacitor application. The possible growth mechanism of the FeC2O4 center dot 2H(2)O nanowires was proposed based on a series of time-dependent experiments. The specific surface area and pore size distribution of the mesoporous alpha-Fe2O3 nanowires were calculated to be about 70.6 m(2) g(-1) and 2.5 nm, respectively. Furthermore, electrochemical measurements demonstrate that the as-prepared mesoporous alpha-Fe2O3 nanowire electrode delivers a high specific capacitance up to 267.5 F g(-1) at 2 A g(-1) and good cycle performance (87% capacitance retention under 2000 cycles). The excellent supercapacitor performance of the alpha-Fe2O3 nanowires can be ascribed mainly to the unique mesoporous structure with large specific surface area, which provide fast electron/ion transfer path as well as large reaction surface area.
引用
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页数:15
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