Full
Outline
Thermo-electrochemical cell represents a novel low-grade waste heat enrichment system. In this field， platinum is the primary material used as electrodes. However， the high cost of platinum significantly hinders the advancement and broader application of thermo-electrochemical cells. Consequently， there is an imperative need to develop alternative electrode materials that are both cost-effective and high-performing. Carbon-based materials that have low cost， high specific surface area， and excellent conductivity are considered promising candidates for this application. In this study， we report the successful synthesis of a series of defect-rich biocarbon using common cabbage leaves as a carbon resource， via the high-temperature carbonization and KOH activation processes. Then， the obtained biocarbon has been employed as electrode materials in thermo-electrochemical cells. Under optimized experimental conditions （calcination temperature： 700 ℃， and concentration of KOH： 6 mol/L）， the biocarbon KC-6 exhibits the best performance， yielding a short-circuit current of 1.13 mA when used as electrode materials， which exceeds the performance of platinum （1.06 mA） under the same conditions. Moreover， when the electrode area is expanded to 2 cm×2 cm， a short-circuit current of 1.47 mA is achieved at a temperature difference of 17.5 K， suggesting considerable potential for the application of this biocarbon in thermo-electrochemical cells.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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