Polypyrrole-Coated Melamine Sponge as a Precursor for Conducting Macroporous Nitrogen-Containing Carbons

Carbon nanotube-coated macroporous sponge for microbial fuel cell electrodes

The materials that are used to make electrodes and their internal structures significantly affect microbial fuel cell (MFC) performance. In this study, we describe a carbon nanotube (CNT)–sponge composite prepared by coating a sponge with CNTs. Compared to the CNT-coated textile electrodes evaluated in prior studies, CNT–sponge electrodes had lower internal resistance, greater stability, more t...

Conducting Polypyrrole Shell as a Promising Covering for Magnetic Nanoparticles

Polypyrrole and Polypyrrole/wood-derived Materials Conducting Composites: a Review

Wood and cellulose derivatives, in both fibrous and water-soluble macromolecular form, are emerging as outstanding candidates for organic electronics applications due to their large-scale availability, low cost, and easy processability. Paper and wood fibre-based derivatives are considered to be materials of choice as supports for communication world-wide. The interest in producing inexpensive ...

Cherry stones as precursor of activated carbons for supercapacitors

It is shown that cherry stones-wastes can be recycled as activated carbons for electrode material in supercapacitors. KOH-activation of this precursor at 800-900oC is an efficient process to obtain carbons with large specific surface areas (1100-1300 mg), average pore sizes around 0.9 to 1.3 nm, which makes them accessible to electrolyte ions, and conductivities between 1 and 2 S cm. These feat...

Polypyrrole-derived Mesoporous Nitrogen-doped Carbons with Intrinsic Catalytic Activity in the Oxygen Reduction Reaction

to 0.33 S cm, a necessary property for electrochemical applications, while a mesoporous structure reduces mass transport limitations. These characteristics are further combined with a high N content (3.55 – 5.45 wt.%). As a result, the as-prepared materials exhibit an enhanced intrinsic electrocatalytic activity towards the oxygen reduction reaction (ORR). They exhibit an onset potential of ~ -...