Green valorization of digested sludge-derived humic acid: SMSI-driven Cu/N Co-doped hierarchical porous carbon materials for high-performance supercapacitors.

Efficient utilization of digestate remains a key challenge in sustainable waste management. This study presents a green strategy by using humic acid (HA) extracted from digestate as a precursor for high-performance supercapacitor electrodes. Through…

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