Comparison of the properties of various biomass-derived carbons.
| Biomass precursor | Preparation method | Mass ratio (biomass : reagent) | S BET | C g capacitance | Measurement condition | Ref. |
|---|---|---|---|---|---|---|
| Eucommia ulmoides wood | Hydrothermal + H3PO4 | 1 : 3.3 | 1456 | 185 F g−1 | 1M H2SO4, 5mV s−1 | 41 |
| Rubberwood | KOH | 1 : 2 | 1932 | 100 | 1.0 m Li-TFSI, 0.1 A g−1 | 42 |
| Rubberwood | H3PO4 | 1 : 1 | 693 | 129 | 1 M H2SO4, 1mV s−1 | 43 |
| Firewood | KOH | 1 : 1 | 1064 | 180 | 0.5 M H2SO4, 10 mV s−1 | 44 |
| Pinecone | KOH | 1 : 1 | 1515 | 137 | 1 M Na2SO4, 0.1 A g−1 | 45 |
| Elaeocarpus tectorius | H3PO4 | 1 : 3.4 | 858 | 201 | 1 M H2SO4, 1 A g−1 | 29 |
| Borassus flabellifer flower | H3PO4 | 1 : 4.25 | 633 | 238 | 1 M KOH, 1 A g−1 | 46 |
| Lignocellulose powders | NaH2PO4 + ZnCl2 | 1 : (0.67 + 1.33) | 658 | 193.6 | 6 M KOH | 47 |
| Fir sawdust | H3PO4 | 1 : 0.03 | 1281.6 | 292 and 169.4 F g−1 | 1 M H2SO4, 0.1 and 0.5 A g−1 | This work |