Review of Biomass-Derived Carbon Nanomaterials—From 0D to 3D—For Supercapacitor Applications

Abstract

The transition to sustainable energy storage solutions has driven significant interest in supercapacitors, which offer high power density, rapid charge–discharge capabilities, and exceptional cycle stability. Biomass-derived carbon nanomaterials have emerged as compelling candidates for supercapacitor electrodes due to their renewable origins, environmental compatibility, and cost-effectiveness. This study explores recent advancements in tailoring structural properties, for example in preparation methods and activation, which are essential for efficient charge storage and rapid ion transport. Attention is given to the dimensional configurations—spanning 0D to 3D structures—and their impact on electrochemical behaviors. This review outlines the challenges faced in scaling up and optimizing these materials for practical applications, alongside an outlook on future research directions. By bridging the gap between material design and application demands, this work contributes to advancing sustainable supercapacitor technologies for a greener energy future.