Electrolyte Engineering to Improve Performance of a Phenoxazine-based Organic Electrode Material in Li-Organic Batteries
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Lithium-ion batteries have reached their theoretical performance limits and been faced with resource scarcity and ethical concerns. To address these challenges, organic electrode materials have emerged as promising alternatives due to their sustainability, environmental friendliness, and high specific capacity. Among these, a phenoxazine trimer molecule (3PXZ) has shown promising potential as a high-voltage electrode material with excellent rate capabilities. However, 3PXZ suffered from rapid capacity decay due to its high solubility in conventional electrolytes like other typical small molecule organic electrodes. Here, we present electrolyte engineering to enhance the stability of 3PXZ electrode without use of costly nanocarbon additives. While conventional electrolytes result in rapid capacity loss of the 3PXZ electrode within 10 cycles, the use of an optimized electrolyte could maintain 85% of its initial capacity even after 1,000 cycles.