Study of Polypyrrole-Manganese Oxide Composites as Supercapacitor Electrode Materials

2012 ◽  
Keyword(s):  
Manganese Oxide ◽  
Electrode Materials ◽  
Supercapacitor Electrode ◽  
Supercapacitor Electrode Materials ◽  
Oxide Composites

Electrodeposition of Manganese Oxide Nanosheets as Supercapacitor Electrode Materials

2016 ◽  
Vol 675-676 ◽  
pp. 273-276 ◽  
Author(s):  
Tuntumrong Wanchaem ◽  
Songsak Rattanamai ◽  
Paweena Dulyaseree ◽  
Wirat Jarernboon ◽  
Winadda Wongwiriyapan
Keyword(s):  
Thin Films ◽  
Manganese Oxide ◽  
Specific Capacitance ◽  
Deposition Time ◽  
Electrode Materials ◽  
Constant Current ◽  
Manganese Sulfate ◽  
Supercapacitor Electrode ◽  
Supercapacitor Electrode Materials ◽  
Ss 304

Manganese oxide (MnOx) thin films were prepared on stainless steel (SS) 304 by galvanostatic (GS) mode of electrodeposition technique using different precursors; 0.1 M potassium permanganate (KMnO4) and 0.1 M manganese sulfate (MnSO4) solutions. The electrodeposition condition was set at a constant current of 1 mA/cm2. Different precursors provide MnOx thin films with different morphologies. Using KMnO4 as a precursor, the MnOx thin film was deposited (MnOx-K), while using MnSO4 as a precursor, the MnOx nanosheets with a thickness of approximately 40 nm were formed (MnOx-S). XPS results evidence the formation of manganese oxide with different oxidation states composition by different precursors. Electrochemical measurements were carried out in a three-electrode setup using Pt and Ag/AgCl electrodes as counting and reference electrodes, respectively and 1M Na2SO4 aqueous solution as electrolyte. MnOx-K at a deposition time of 10 min shows the highest specific capacitance of 233.55±19.01 F/g. The specific capacitance improvement of MnOx-K may be attributed to MnOx nanosheet structure which increases surface area of electrode.

Ti3C2Tx MXene for electrode materials of supercapacitors

2021 ◽  
Author(s):  
Rui Ma ◽  
Zetong Chen ◽  
Danna Zhao ◽  
Xujing Zhang ◽  
Jingting Zhuo ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Supercapacitor Electrode ◽  
Supercapacitor Electrode Materials ◽  
Representative Member

To promote the development of supercapacitors and their applications in modern electronics, it is crucial to explore novel supercapacitor electrode materials. As a representative member of the rising 2D MXenes,...

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