https://scholars.lib.ntu.edu.tw/handle/123456789/626501
標題: | All-Solid-State Na-O2 Batteries with Long Cycle Performance | 作者: | Savunthari, KV Yi, CH Huang, JY Iputera, K Hu, SF RU-SHI LIU |
關鍵字: | all-solid-state Na-O2 battery; Ru; CNT cathode; NZSP solid electrolyte; succinonitrile interlayer; metal-gas battery; BIFUNCTIONAL ELECTROCATALYST; AT-CNT; NANOSHEETS; INTERFACE; PHOSPHATE | 公開日期: | 2022 | 出版社: | AMER CHEMICAL SOC | 卷: | 5 | 期: | 11 | 起(迄)頁: | 14280 | 來源出版物: | ACS APPLIED ENERGY MATERIALS | 摘要: | All-solid-state sodium oxygen (ASS Na-O2) batteries have received interest due to their higher theoretical energy density, lower cost, higher safety level, and nonflammability compared with liquid electrolyte and Li-O2 batteries. Here, we report the application of carbon nanotube (CNT) and Ru/CNT cathodes, succinonitrile with a NaClO4 (SN + NaClO4) interlayer, a Na3Zr2Si2PO12 (NZSP) solid electrolyte, and a Na film anode for ASS Na-O2 batteries. Results showed that the SN + NaClO4 interlayer plays a crucial role in the tri-conductive cathode, ionic conductivity, and interfacial charge transfer kinetics between the Ru/CNT cathode and NZSP electrolyte. The ASS Na-O2 batteries with Ru/CNT and SN + NaClO4 tri-conductive cathodes exhibited a long cycling performance of 100 cycles (current density of 100 mA g-1 and limited capacity of 500 mA h g-1), a discharge capacity of 11 034 mA h g-1 (current density of 100 mA g-1), and a small overpotential gap of 1.4 V. These values were better than those for CNT and SN + NaClO4 tri-conductive cathodes (maximum discharge capacity of 2413 mA h g-1, 27 cycles, and potential gap of 1.7 V) with a Na2O2 discharge product. Ex situ analysis showed that the Ru/CNT cathode achieved superior reversibility deposition and decomposition of the Na2O2 discharge product. Therefore, the ASS Na-O2 battery system is safe and stable for energy storage applications. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/626501 | ISSN: | 2574-0962 | DOI: | 10.1021/acsaem.2c02845 |
顯示於: | 化學系 |
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