Conductive Additives for Next‐Generation Batteries: Emphasizing the Potential of Bio‐Derived 3D Carbon Architectures at Electrode–Electrolyte Interfaces

ABSTRACT Conductive additives play a crucial role in secondary batteries by providing additional conductive pathways for charge transport, compensating for the inherently low electronic conductivity of active materials. Notably, electronic conductivity is a key factor governing the rate capability of battery cells, as higher conductivity enables more efficient electron transport at fast charge–discharge rates. While lower‐dimensional (0D–2D) additives offer distinct benefits, they often face limitations in maintaining continuous conductive networks and mechanical stability under demanding battery conditions. In contrast, 3D conductive frameworks establish continuous electron‐transport networks that also maintain mechanical stability and interfacial integrity, thereby supporting improved cycle life as well as rate capability. This review highlights the potential of constructing 3D carbon architectures using bio‐derived carbon precursors—a scalable and environmentally favorable approach that produces frameworks with high surface area and hierarchical porosity. The integration of these features positions bio‐derived 3D carbons as promising components for next‐generation batteries, with the potential to improve electrode–electrolyte interface stability while also offering environmental advantages. Overall, bio‐derived 3D carbons are discussed here as a promising design platform for next‐generation batteries, with their practical value depending on how effectively these structural advantages are translated into stable electrode‐level conductive networks.