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Unlocking high-potential non-persistent radical chemistry for semi-aqueous redox batteries
- TianThese authors contributed equally to this work., Yuheng, Wu, Kuang-Hsu, Cao, Liuyue, Saputera, Wibawa H., Amal, Rose, Wang, Da-Wei
- Chemical communications 2019 v.55 no.15 pp. 2154-2157
- electrolytes, cathodes, chemical reactions, chemical compounds, batteries
- A non-persistent radical precursor, N-hydroxyphthalimide (NHPI), is reported as a low-cost, high-potential organic cathode in a binary electrolyte for a semi-aqueous redox battery. A highly reversible NHPI-phthalimide N-oxyl (PINO) radical redox couple at +1.30 VNHE is demonstrated, providing a 1.15 V rechargeable battery with an attractive >85% voltage efficiency when coupled with anthraquinone-2-sulfonic acid (AQS).