Understanding Surface and Bulk Electronic Structure of Li-ion Battery Cathodes Operated at Extreme Environment

IF 1.7 Q4 ELECTROCHEMISTRY Electrochemical Society Interface Pub Date : 2022-12-01 DOI:10.1149/2.f06224if
Sudhan Nagarajan
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Abstract

Li-ion and Li metal batteries are widely used for portable devices due to their high gravimetric and volumetric energy densities and cyclability. However, overcharging and extreme discharging of the battery can lead to overheating and thermal runaway, while improper use can lead to fires and explosions. The volatility and flammability of the organic solvents (ethylene carbonate/dimethyl carbonate) used as electrolytes are the major sources of these thermal stability issues. Therefore, an alternative to flammable electrolytes, room temperature ionic liquids (RTILs) electrolyte chemistry is investigated due to its high thermal and electrochemical stability. Here, the fundamental understanding of developing high temperature Liion battery materials is evaluated using electrochemistry and depth-dependent the X-ray spectroscopy techniques.
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了解极端环境下运行的锂离子电池阴极的表面和体电子结构
锂离子和锂金属电池由于其高重量和体积能量密度以及可循环性而被广泛用于便携式设备。然而,电池的过度充电和极端放电会导致过热和热失控,而使用不当会导致火灾和爆炸。用作电解质的有机溶剂(碳酸亚乙酯/碳酸二甲酯)的挥发性和可燃性是这些热稳定性问题的主要来源。因此,作为可燃电解质的替代品,室温离子液体(RTIL)电解质化学因其高热稳定性和电化学稳定性而受到研究。在这里,使用电化学和深度相关的X射线光谱技术来评估开发高温锂离子电池材料的基本理解。
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CiteScore
2.10
自引率
5.60%
发文量
62
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