Selective synthesis of hierarchical mesoporous spinel NiCo2O4 for high-performance supercapacitors

被引：170

作者：

Zhang, Yufei ^{[1
,2
,3
,4
]}

Ma, Mingze ^{[2
,3
,4
]}

Yang, Jun ^{[2
,3
,4
]}

Su, Haiquan ^{[1
]}

Huang, Wei ^{[2
,3
,4
]}

Dong, Xiaochen ^{[2
,3
,4
]}

机构：

[1] Inner Mongolia Univ, Sch Chem & Chem Engn, Hohhot 010021, Inner Mongolia, Peoples R China

[2] Nanjing Tech Univ, Jiangsu Singapore Joint Res Ctr Organ Bioelect &, Nanjing 211816, Jiangsu, Peoples R China

[3] Nanjing Tech Univ, IAM, Nanjing 211816, Jiangsu, Peoples R China

[4] Nanjing Tech Univ, KLOEID, Nanjing 211816, Jiangsu, Peoples R China

来源：

NANOSCALE | 2014年 / 6卷 / 08期

基金：

高等学校博士学科点专项科研基金;

关键词：

NICKEL COBALTITE NANOWIRES; ONE-POT SYNTHESIS; FACILE SYNTHESIS; GRAPHENE FOAM; ARRAYS; HYBRID; CO3O4; NANOSHEETS; ELECTRODE; NANORODS;

D O I：

10.1039/c3nr06564b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hierarchical mesoporous spinel NiCo2O4 was synthesized by a facile hydrothermal method assisted by polyvinylpyrrolidone (PVP) and a post annealing treatment. The synthesized hierarchical mesoporous NiCo2O4 presents a hierarchical mesoporous structure with diameters of 5.0 and 25 nm, respectively. Compared to conventional flower-like NiCo2O4, the hierarchical mesoporous structured NiCo2O4 exhibits excellent supercapacitor performance. The specific capacitance can reach 1619.1 F g(-1) at a current density of 2.0 A g(-1). When the current density is increased to 10.0 A g(-1), a specific capacitance of 571.4 F g(-1) can be obtained. Furthermore, the hierarchical mesoporous structured NiCo2O4 presents excellent stability. The outstanding electrochemical performance of the hierarchical mesoporous NiCo2O4 reveals its potential to be a promising material for use in supercapacitors, and also inspires continued research on binary metal oxides as energy transformation materials.

引用

页码：4303 / 4308

页数：6

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