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Evaluates p-type cathodes' performance in lithium batteries, suggesting an effective approach for durability.
p-Type organic cathodes offer high operating voltages but are often limited by poor cyclability. To overcome this, herein, we successfully integrate two p-type redox centers, triphenylamine and phenazine, into conjugated microporous polymers (CMPs), denoted as CMP-TBDA-Pz and CMP-TBA-Pz. These materials demonstrate high voltages (>3.5 V vs Li+/Li), superior capacity, and excellent stability. Notably, the dual-redox centers endow the system with hybrid charge storage kinetics, balancing diffusion-controlled and pseudocapacitive behavior. As a result, CMP-TBDA-Pz delivers specific capacities of 219.4 mAh g–1 (0.1 A g–1) and 135.7 mAh g–1 (5 A g–1), corresponding to energy densities of 633 and 417 Wh kg–1, respectively. In graphite//CMP-TBDA-Pz full-cells, 97% capacity retention is achieved after 500 cycles at 2 A g–1. This work establishes a strategy for high-performance p-type cathodes via dual-site architecture to regulate hybrid kinetics.
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Jiao et al. (2026) studied this question.
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