Ultrafast Anion Storage of a High Voltage Cathode Enabled by an Integrated Donor-Acceptor and 1D COF Nanochannel Architecture with 40 000 Cycle Durability at 60 C

The demand for high-power and fast-charging energy storage systems necessitates sustainable electrode materials that combine ultrafast kinetics, long-term stability, and structural durability. In this work, we present TP-IPA, an imine-linked covalent framework consistent with a 1D covalent organic framework (COF) architecture and featuring a donor-acceptor (D-A) design. It enables ultrafast and reversible anion storage. By integrating a D-A architecture with an ordered 1D nanochannel structure, TP-IPA enhances both electronic conductivity and ion transport. As a p-type cathode material, TP-IPA enables each repeating unit motif to reversibly store two PF6 - anions via oxidation. It delivers high average discharge voltages (similar to 3.58 V vs. Li+/Li and similar to 3.54 V vs. Na+/Na), outstanding rate performance (64 mAh g-1 in Li half-cells and 67 mAh g-1 in Na half-cells at 10 A g-1, equivalent to similar to 120 C), and remarkable cycling stability. Notably, it retains 80% of its initial capacity after 20 000 cycles in Li half-cells and 40 000 cycles in Na half-cells at ultrahigh C-rates (similar to 60 C). This makes TP-IPA one of the most stable and rate-resilient organic cathodes reported to date. This work provides a new strategy for developing next-generation high-power, long-life organic cathode materials.