Electrocapacitive properties of supercapacitors based on hierarchical porous carbons from chestnut shell

- Porous carbons are prepared from chestnut shells by a chemical activation method.
- The surface chemistry and surface area of porous carbons can be tuned subtly.
- The microstructure of porous carbons can be adjusted by changing the activation temperature.
- The electrocapacitive feature of porous carbons is closely related to their surface areas.