Title :
Synthesis of Ni-riched NiO-Co3O4 sheet-like nanocomposites and their application in supercapacitors
Author :
Xian-Wen Wang ; Kong-Lin Wu ; Zai-Xian Zhang ; Yao-Xiang Yue ; Meng-Li Zhao ; Juan Cheng ; Xian-Wen Wei
Author_Institution :
Key Lab. of Functional Mol. Solids, Anhui Normal Univ., Wuhu, China
Abstract :
In this reported work Ni-riched NiO-Co3O4 sheet-like nanocomposites (SNCs) were obtained through a facile solvothermal method in a mixed solvent and subsequently calcinated in air. Galvanostatic charge-discharge measurement revealed that the Ni-riched NiO-Co3O4 SNCs electrode has an impressive specific capacitance as high as 836 F g-1 at 4 A g-1 in 3 M KOH solution. The as-obtained Ni-riched NiO-Co3O4 SNCs product showed a weak cycling stability, but the higher capacitance (424 F g-1) was retained after 1000 cycles at 4 A g-1.
Keywords :
calcination; capacitance; cobalt compounds; crystal growth from solution; electrodes; nanocomposites; nickel compounds; supercapacitors; NiO-Co3O4; calcination; cycling stability; electrode; galvanostatic charge-discharge measurement; mixed solvent; sheet like nanocomposites; solvothermal method; specific capacitance; supercapacitors;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2014.0166
