One-pot synthesis of NiO-MnCo2O4 heterostructure hollow spheres via template-free solvothermal method for high-performance supercapacitors

被引:11
作者
Cheng, Yinfeng [1 ]
Xia, Kedong [1 ]
Li, Huabo [1 ]
Liu, Pengfei [2 ]
Zhao, Zifang [1 ]
Xu, Guangri [1 ]
Wahid, Fazli [3 ]
Wang, Huajie [1 ]
机构
[1] Henan Inst Sci & Technol, Sch Chem & Chem Engn, Xinxiang Key Lab Optoelect Funct Mat & Devices, Xinxiang Key Lab Bioprinting & Precis Med 3D, Xinxiang 453003, Peoples R China
[2] Hunan Univ Sci & Technol, Sch Chem & Chem Engn, Xiangtan 411201, Peoples R China
[3] Pak Austria Fachhochschule Inst Appl Sci & Technol, Sch Biomed Sci & Biotechnol, Haripur 22620, Pakistan
基金
中国国家自然科学基金;
关键词
Supercapacitors; Solvothermal method; NiO-MnCo; 2; O; 4; Heterostructure; Hollow spheres; ENERGY-STORAGE; NANOPARTICLES; DEVICE;
D O I
10.1016/j.colsurfa.2023.131544
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Supercapacitors employ transitional metal oxides as pseudocapacitive materials have drawn great attention owing to their prominent energy storage performances, but most of them are concentrate on simplex metal oxides. In this work, we reported a novel electrode material for supercapacitors composed of NiO-MnCo2O4 heterostructure hollow spheres via a facile and one-pot route. The resulting hybrid electrode material demonstrates a high specific capacity of 660 C g- 1 at 1 A g-1. An assembled hybrid supercapacitor based on this unique heterostructure hollow spheres as positive electrode and nitrogen doped hierarchically porous carbon as negative electrode indicates a favorable energy density of 40 Wh kg- 1 at 750 W kg- 1 and long cycling lifespan of nearly 90% capacity retention rate after 5000 cycles. This work not only produces a competitive electrode material for energy storage devices but also offers a feasible strategy for producing complex transitional metal oxides materials with high capacitive performance.
引用
收藏
页数:11
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