Department of Material Science and NanoEngineering, Rice University , Houston, Texas 77005, United States.
ACS Appl Mater Interfaces. 2017 Dec 20;9(50):43623-43631. doi: 10.1021/acsami.7b12675. Epub 2017 Dec 7.
In the evaluation of compatibility of different components of cell for high-energy and extreme-conditions applications, the highly focused are positive and negative electrodes and their interaction with electrolyte. However, for high-temperature application, the other components are also of significant influence and contribute toward the total health of battery. In present study, we have investigated the behavior of aluminum, the most common current collector for positive electrode materials for its electrochemical and temperature stability. For electrochemical stability, different electrolytes, organic and room temperature ionic liquids with varying Li salts (LiTFSI, LiFSI), are investigated. The combination of electrochemical and spectroscopic investigations reflects the varying mechanism of passivation at room and high temperature, as different compositions of decomposed complexes are found at the surface of metals.
在评估用于高能和极端条件应用的不同电池组件的兼容性时，重点关注的是正负极及其与电解质的相互作用。然而，对于高温应用，其他组件也具有重要影响，并对电池的整体健康状况产生贡献。在本研究中，我们研究了铝的行为，铝是最常见的正极材料集流器，因为它具有电化学和温度稳定性。对于电化学稳定性，研究了不同的电解质，包括有机电解质和室温离子液体，以及不同的锂盐（LiTFSI、LiFSI）。电化学和光谱研究的结合反映了在室温及高温下钝化的不同机制，因为在金属表面发现了不同组成的分解络合物。
