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- W3087625101 endingPage "127057" @default.
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- W3087625101 abstract "A uniquely designed mechanically rechargeable all-solid-state carbon-air battery stack, with extremely high specific energy and power density, shows great promise for applications in portable power supplies and small power stations. • A unique designed high performance and mechanically rechargeable carbon-air battery. • The battery based on long electrolyte tube has anode inside and cathode outside. • Current from anode is efficiently collected through holes along electrolyte tube. • Battery stack is formed by connecting single batteries in series. • A carbon-air 3-cell-stack gives output power 11 W and specific energy 3600 Wh kg −1 . Carbon-air batteries have a very high theoretical specific energy. However, they have not been given sufficient attention because of the challenges associated with optimizing the battery design and making it rechargeable. Here we report a novel carbon-air battery stack based on solid oxide electrolyte which enables high operating temperature. The battery is composed of a tubular membrane electrode assembly (MEA), with a solid oxide electrolyte layer sandwiched between two porous electrodes, and carbon powder filled inside the MEA tube. By introducing a row of holes along the length direction of the MEA tube for current collection, the performance of the battery can be significantly enhanced because of shortened current paths. By using a removable quartz plug to stuff the open end of the MEA tube, the battery becomes mechanically rechargeable. Several batteries can be assembled into a stack by connecting the batteries in electrical series through the holes for current collection. A 3-battery-stack operating at 800 °C displays an output power of 11.0 W, corresponding to ~ 160 mW cm −2 . With an overall carbon powder of ~ 10 g, the stack discharges at 0.5 A and ~ 2.75 V for 26 h, revealing a specific energy of ~ 3600 Wh kg −1 , which is significantly higher than those of the state-of-the-art metal-air batteries." @default.
- W3087625101 created "2020-09-25" @default.
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- W3087625101 date "2021-01-01" @default.
- W3087625101 modified "2023-10-17" @default.
- W3087625101 title "An all-solid-state carbon-air battery reaching an output power over 10 W and a specific energy of 3600 Wh kg−1" @default.
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- W3087625101 doi "https://doi.org/10.1016/j.cej.2020.127057" @default.
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