Cross-Flow Boosts Ultrafast-Charging Organic Cathodes via 2D Vertically Ladder-Like Polymer Design

• • 2DVLP-1 and 2DVLP-2 deliver specific capacities of 302 and 291 mAh g−1 at low current densities, respectively, demonstrating high energy density essential for practical applications. • • The polymer's interlayer micropores (0.4–2.0 nm) and structural defects create vertical Li+ diffusion channels, reducing diffusion path lengths and enabling rapid ion transport. • • Weak van der Waals interlayer interactions (no π–π stacking) allow horizontal Li+ intercalation, synergistically enhancing overall ion diffusion kinetics. • • The 2D vertically ladder-like architecture addresses cycling instability of TTQ-based cathodes, offering a robust framework for long-cycle-life organic batteries.