Mesoporous hybrid NiOx–MnOx nanoprisms for flexible solid-state asymmetric supercapacitors. Issue 26 (13th June 2016)

• Record Type: Journal Article
• Authors: Wei, Chengzhen; Cheng, Cheng; Ma, Lan; Liu, Mengna; Kong, Dechen; Du, Weimin; Pang, Huan
• Is Part Of: Dalton transactions. Volume 45:Issue 26(2016)
• Page Start: 10789
• Page End: 10797
• Publication Date: 2016-06-13
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c6dt01025c
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Mesoporous hybrid NiO x –MnO x nanoprisms exhibit good performance as electrode materials for flexible solid-state symmetric supercapacitors. Abstract : Mesoporous hybrid NiO x –MnO x nanoprisms have been successfully prepared in this work. The synthesis process involves a facile solvothermal method for preparation of Ni–Mn precursor particles and a subsequent annealing treatment. These mesoporous hybrid NiO x –MnO x nanoprisms have a high surface area of 101.6 m 2 g −1 . When evaluated as electrode materials in supercapacitors, the as-prepared mesoporous hybrid NiO x –MnO x nanoprisms deliver a specific capacitance of 1218 F g −1 at a current density of 2.0 A g −1 . More importantly, the mesoporous hybrid NiO x –MnO x nanoprisms were successfully used to construct flexible solid-state asymmetric supercapacitors. The device shows a specific capacitance of 149.1 mF cm −2 at 2.0 mA cm −2, a good cycling stability with only 2.9% loss of capacitance after 5000 charge–discharge cycles, and good mechanical flexibility under different bending angles. These results support the promising application of mesoporous hybrid NiO x –MnO x nanoprisms as advanced supercapacitor materials.