Details

Autor(en) / Beteiligte

• Du, Chenyu
• Han, Enshan
• Gao, Li
• Li, Lina
• Qiao, Shunpan
• Sun, Lamei
• Liu, Jiabao

Titel

Soft-template and simple hydrothermal method to synthesize Fe-Co oxide on nickel foam and apply it to supercapacitors

Ist Teil von

• Ionics, 2020-08, Vol.26 (8), p.4009-4018

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The exploration of high-performance supercapacitors (SCs) has attracted wide attention worldwide. Herein, iron cobalt oxide (FeCo 2 O 4 ) nanocomposites were prepared by using soft-template and hydrothermal method. The prepared FeCo 2 O 4 electrode material presented good dispersivity and had different flower-like structures and flocculent structures, which exhibited high capacitance and cyclic stability. Specially, the FeCo 2 O 4 electrode with the usage of 0.5 g polyvinylpyrrolidone (PVP), sodium dodecyl sulfate (SDS), cetyltrimethylammonium bromide (CTAB), and none template agents showed high capacitance of 1231.1, 956.2, 1027.8, and 677.3 F g −1 at 1 A g −1 . Furthermore, we used an optimized FeCo 2 O 4 electrode material as the positive electrode, activated carbon (AC) as the negative electrode, and 6 M KOH solution as the electrolyte to assemble an asymmetric supercapacitor (ASC). The resulting ASC device exhibits a favorable energy density of 51.2 Wh kg −1 and a high power density of 775.4 W kg −1 .