2019年10月1日 · Fluoroethylene carbonate (FEC) as an electrolyte additive can significantly alters the solvation structure, electrolyte reduction, and solid electrolyte interphase (SEI) formation process as verified by calculations and experiments.

2011年11月21日 · The surface chemistry of SiNW electrodes cycled in FEC-modified and standard electrolytes were investigated using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy. The impact of FEC as a co-solvent on the electrochemical behavior of SiNW electrodes is discussed herein in …

2017年7月24日 · In this work we explore how an electrolyte additive (fluorinated ethylene carbonate – FEC) mediates the thickness and composition of the solid electrolyte interphase formed over a silicon anode...

2022年8月24日 · Adding electrolyte additives such as fluoroethylene carbonate (FEC) greatly enhances the electrochemical performance of Si/Gr anodes. Several FEC decomposition mechanisms and associated stabilizing effects have been proposed to date. Many of them point to the formation of a cross-linked polymer that can adapt to changes in the electrode volume.

2013年4月4日 · To confirm the effects of FEC on electrolyte decomposition and cell resistance, the surface chemistry and impedance of an Li electrode cycled in electrolytes with and without a FEC solvent are investigated using attenuated total reflectance–Fourier transform infrared (ATR-FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), time of ...

2017年11月29日 · The effect of fluoroethylene carbonate (FEC) additive has been studied in the formation of solid electrolyte interphase (SEI) over Si-based anode using in-situ DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy).

2017年5月23日 · The cycling performance of silicon-carbon anodes in the electrolyte with different content (0, 2, 5, 10 wt%) fluorinated ethylene carbonate (FEC) was studied. Among all the electrolytes the injection of 2 wt% FEC into carbonate electrolyte, the retention capacity of silicon carbon anode enhanced from 54.81 to 83.82% after 50 cycles.

2016年8月26日 · FluoroEthylene Carbonate, FEC, has been a popular electrolyte additive in Na-ion batteries after it was shown that it can improve the efficiency and stability of half cells 5 while introducing anomalies in the voltage curve which have been so far unexplained.

2021年3月2日 · 考察了添加不同fec含量的电解质的nmr、raman、ftir光谱，结合分子动力学模拟，发现电解质中p f 6 ˉ 阴离子与fec缔合，降低了溶剂化结构中其他碳酸酯类溶剂的分子数目，将电解质的电化学窗口提高了0.7 v。

通过电极和电解质的核磁共振（nmr）和傅立叶变换红外（ftir）光谱进一步异位研究不同电位下的分解产物。 此外，通过阻抗谱监测不同电位下的表面膜形成。