Details

Autor(en) / Beteiligte

• Zhuang, Zhao
• Wang, Wenjiao
• Wei, Yudi
• Li, Tingxi
• Ma, Mingliang
• Ma, Yong

Titel

Preparation of polyaniline nanorods/manganese dioxide nanoflowers core/shell nanostructure and investigation of electrochemical performances

Ist Teil von

• Advanced composites and hybrid materials, 2021-12, Vol.4 (4), p.938-945

Ort / Verlag

Cham: Springer International Publishing

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A hierarchical polyaniline nanorod/manganese dioxide nanoflower (PANI/MnO 2 ) core/shell nanostructure was successfully constructed through in situ polymerization, in which PANI nanorods work as the core and K-birnessite-type MnO 2 act as the shell. The core/shell nanostructure effectively increases active surface areas and obviously decreases the ion transmission distance, which is conducive to the efficient contact and transfer of ions. The morphology, the chemical structure, and the crystal phase of PANI/MnO 2 were measured by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Moreover, its supercapacitor behaviors were analyzed by cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) tests, showing that this nanostructure exhibits better electrochemical activity and higher capacitance performance than pure PANI nanorods and pure MnO 2 . In 1.0 M Na 2 SO 4 electrolyte solution, the specific capacitance of PANI/MnO 2 is 215 F g −1 at 0.30 A g −1 . Graphical abstract