An In Situ Oxidative Polymerization Method to Synthesize Mesoporous Polypyrrole/MnO2 Composites for Supercapacitors
Manganese dioxide (MnO<sub>2</sub>) shows great potential in the field of electrochemical performance. But its poor conductivity, easy dissolution in electrolytes and undesirable ionic accessibility hinder its application. The construction of mesoporous polypyrrole/manganese dioxide (PPy/MnO<sub>2</sub>) composites can effectively alleviate these problems. Herein, an in situ oxidative polymerization method is developed to synthesize mesoporous PPy/MnO<sub>2</sub> composites. In this method, Pluronic P123 and pyrrole monomers are co-assembled on the surface of MnO<sub>2</sub>. MnO<sub>2</sub> is used as an oxidation initiator to polymerize pyrrole under acidic conditions and as a substrate for a uniform coating of PPy. The obtained composites, with a large electrochemical effective area, more reaction sites and good structural stability have better capacitor performance (182.8 F g<sup>-1</sup>), higher than MnO<sub>2</sub> (116.6 F g<sup>-1</sup>) at the same current density. This method provides a meaningful reference for the development of mesoporous PPy/MnO<sub>2</sub> supercapacitor materials.
Authors
- Xuefeng Li (ORCID: https://orcid.org/0009-0008-0647-9725)
- Yangbo Dong
- Wei Li (ORCID: https://orcid.org/0009-0005-9995-7674)
- Yan Song (ORCID: https://orcid.org/0009-0002-1785-5526)
- Zhen Tan (ORCID: https://orcid.org/0000-0001-6719-0185)
- Guibin Wang (ORCID: https://orcid.org/0000-0003-1330-4946)
- Pingfei Ma
Institutions
- Shanxi University (CN)
- Jilin University (CN)
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
Publication Details
- Journal
- Molecules
- Published
- 2024-12-26
- DOI
- https://doi.org/10.3390/molecules30010045
- Citations
- 8
- Primary Topic
- Supercapacitor Materials and Fabrication
- Type
- article
- Field-Weighted Citation Impact
- 0.94
Funders
- National Natural Science Foundation of China
- People's Government of Jilin Province