Biomass‐Derived Carbon Dots: Sustainable Solutions for Advanced Energy Storage Applications

Abstract The growing energy demand has underscored the importance of sustainable energy storage devices. Biomass‐derived carbon dots (B‐Cdots) have gained significant attention for their potential to address this challenge. Utilizing greener routes for the large‐scale synthesis of B‐Cdots is not only eco‐friendly and cost‐effective but also promotes sustainability. This review highlights various synthesis methods for B‐Cdots, including microwave‐assisted, hydrothermal, and pyrolysis‐based carbonization processes. It also explores their electrochemical applications in supercapacitors, lithium‐ion batteries, sodium‐ion batteries, and other energy storage devices, along with recent advancements in the field. The fabrication of electrodes using B‐Cdots offers several advantages, such as tunable chemical and physical properties, porous structures, efficient heteroatom doping, and excellent electrical conductivity. These attributes make B‐Cdots highly attractive for energy storage applications. Overall, this review emphasizes the critical role of sustainable materials in shaping the future of energy storage technologies.