Kung Yu-Ruei, Li Cheng-Yao, Hasin Panitat, Su Chia-Hung, Lin Jeng-Yu
Department of Chemical Engineering and Biotechnology, Tatung University, Taipei 104327, Taiwan.
Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Ministry of Higher Education, Science, Research and Innovation, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
Polymers (Basel). 2023 Apr 21;15(8):1965. doi: 10.3390/polym15081965.
In this study, butadiene sulfone (BS) was selected as an efficient electrolyte additive to stabilize the solid electrolyte interface (SEI) film on the lithium titanium oxide (LTO) electrodes in Li-ion batteries (LIBs). It was found that the use of BS as an additive could accelerate the growth of stable SEI film on the LTO surface, leading to the improved electrochemical stability of LTO electrodes. It can be supported by the BS additive to effectively reduce the thickness of SEI film, and it significantly enhances the electron migration in the SEI film. Consequently, the LIB-based LTO anode in the electrolyte containing 0.5 wt.% BS showed a superior electrochemical performance to that in the absence of BS. This work provides a new prospect for an efficient electrolyte additive for next-generation LIBs-based LTO anodes, especially when discharged to low voltage.
在本研究中，选择丁二烯砜（BS）作为一种有效的电解质添加剂，以稳定锂离子电池（LIBs）中锂钛氧化物（LTO）电极上的固体电解质界面（SEI）膜。研究发现，使用BS作为添加剂可以加速LTO表面稳定SEI膜的生长，从而提高LTO电极的电化学稳定性。BS添加剂能够有效降低SEI膜的厚度，并显著增强SEI膜中的电子迁移，这证实了上述观点。因此，在含有0.5 wt.% BS的电解质中，基于LIB的LTO阳极表现出优于无BS时的电化学性能。这项工作为下一代基于LTO阳极的LIBs高效电解质添加剂提供了新的前景，特别是在放电至低电压时。
