Modified coin cells to evaluate the electrochemical properties of solid-state fluoride-ion batteries at 150 °C
Modified coin cells to evaluate the electrochemical properties of solid-state fluoride-ion batteries at 150 °C
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DOI：
10.1016/j.jfluchem.2016.09.006
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发表时间：
2016-11-01
影响因子：
1.9
通讯作者：
Dambournet, Damien
中科院分区：
文献类型：
--
作者：
Grenier, Antonin;Gutierrez, Ana Gabriela Porras;Dambournet, Damien
在开发用于电化学能量系统的新化学品的范围内，可再充电固态氟离子电池由于其高的理论能量密度而成为有吸引力的装置。氟离子导体的现有技术需要使用高温电化学电池来克服电解质在室温下的低离子电导率。在这项工作中，我们修改了硬币电池，以评估氟离子电池在高温下，长时间和手套箱外的电化学性能。纽扣电池由高温环氧树脂覆盖，能够有效密封，从而在150摄氏度的空气环境中提供保护。通过对由Bi和BiF 3制成的复合电极组装的对称电池进行电化学研究，证实了该设置的适用性。值得注意的是，在3次循环后，用改进的硬币电池设置达到约190 mAh/g的可逆容量。(C)2016爱思唯尔B. V.保留所有权利。
In the scope of developing new chemistries for electrochemical energy systems, rechargeable solid-state fluoride-ion batteries are attractive devices owing to their high theoretical energy density. State of the art of fluoride ion conductors require the use of high temperature electrochemical cells to overcome the low ionic conductivity of the electrolyte at room temperature. In this work, we modify a coin cell to evaluate the electrochemical properties of fluoride-ion batteries at elevated temperature, over long periods of time and outside a glovebox. The coin cell is covered by a high-temperature epoxy resin that enables efficient sealing and therefore protection against air atmosphere at 150 degrees C. The suitability of the setup is confirmed by electrochemical investigation performed on a symmetrical cell assembled with composite electrodes made of Bi and BiF3. Notably, a reversible capacity of around 190 mAh/g after 3 cycles is reached with the modified coin cell setup. (C) 2016 Elsevier B.V. All rights reserved.