Synthesis of γ-MnOOH nanorods by successive ionic layer deposition method and their capacitive performance

• 来源期刊: 能源化学
• 年，卷（期）: 2017,（3）
• 页码范围: 336-339
• 页数: 4页
• 语种: 英文

摘要

It was first shown in the present study that layers of manganite γ-MnOOH can be deposited on the surface of a substrate by its multiple successive treatment by the solutions of MnSO4 and K2S2O8 using the successive ionic layer deposition (SILD) technique.Their analysis was carried out by the XRD,XPS,FT-IR,SEM and EDX methods.It has shown that the synthesized layers are formed by aggregates of nanorods up to 80-100 nm in length and approximately 8-10 nm in diameter.A probable sequence of chemical reactions leading to the formation of a layer of the given morphology is suggested.Testing of performance of supercapacitors with nickel foam electrodes incorporating the γ-MnOOH layers in the 0.1 M KOH electrolyte at 1 A/g indicated the specific capacitance equal to 1120 F/g.After 1000 work cycles the observed degradation of this value was less than 3％.