Selective micro-etching of duplex stainless steel for preparing manganese oxide supercapacitor electrode

Szu Jung Pan, Yi Ju Shih, Jhen Rong Chen, Jeng Kuei Chang, Wen Ta Tsai

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

In this investigation, manganese oxide electrodes that incorporate selectively micro-etched duplex stainless steel (DSS) for supercapacitor applications were fabricated. The experimental results demonstrate that selective dissolution of the γ phase could result in the formation of α phase network, and vice versa. Controlling the extent of selective dissolution produces a surface with a concave-convex morphology, increasing the surface area. Manganese oxide could then be anodically deposited onto the etched dual phase steel current collector. The experimental results of cyclic voltammetry (CV) show that the specific capacitance increased with the etching depth of either the γ or the α phase. Additionally, selective dissolution occurred in α phase had a better effect on increasing the specific capacitance. The successful application of selective dissolution in fabricating a current collector was thus demonstrated.

Original languageEnglish
Pages (from-to)261-267
Number of pages7
JournalJournal of Power Sources
Volume187
Issue number1
DOIs
Publication statusPublished - 2009 Feb 1

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Selective micro-etching of duplex stainless steel for preparing manganese oxide supercapacitor electrode'. Together they form a unique fingerprint.

Cite this