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Solid solvation structure design improves all-solid-state organic batteries
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DOI：10.1038/s41557-025-01866-0.png)
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Abstract
En 中文
Organic electrode materials offer a versatile, sustainable approach for next-generation lithium-ion batteries but are limited by low working voltages and poor cycling stability. Here we report a solid-solvation-structure design strategy to improve both the voltage and stability of organic electrode materials in all-solid-state batteries. As a proof of concept, we incorporate halide electrolytes as solid solutes and tetrachloro-o-benzoquinone as a solid solvent to form homogeneous solid cathode solutions. Systematic optimization of the inner solvation configuration enables tetrachloro-o-benzoquinone to achieve a high working voltage (3.6 V vs. Li+/Li) at room temperature within an asymmetric solid solvation sheath. Moreover, the equilibrium redox pathway and electrostatically driven self-healing interfaces revealed rapid redox kinetics and stable performance over 7,500 cycles in all-solid-state batteries under low stack pressures. This work demonstrates that organic electrode materials can serve as viable, durable and cost-effective alternatives to transition metal oxides in all-solid-state batteries. Organic electrode materials offer a versatile and sustainable route for lithium-ion batteries, but their application is hindered by low working voltages and poor cycling stability. Now, it has been shown that dissolving halide electrolytes into organic electrodes effectively tunes the working voltage and enhances the electrochemical performance of all-solid-state batteries.
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20.2
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4.4K
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