In-situ dilatometry and impedance spectroscopy characterization of single walled carbon nanotubes blended LiNi0.6Mn0.2Co0.2O2 electrode with enhanced performance
نویسندگان
چکیده
Enhancing lithium-ion batteries (LiBs) cycle life is essential from both economic and sustainability perspective. In addition, to make their application in electric vehicles (EVs) even more feasible, the energy power density have be enhanced as well. Improvement electrical conductivity of battery electrodes can lead an augmentation this achieved by using highly conductive carbon nanomaterials electrode fabrication. On other hand, LiBs affected dilation positive negative during lithium ion (de)-insertion, also tailored design. work, ozonated long single walled nanotubes (SWCNTs) are utilized improve a LiNi0.6Mn0.2Co0.2O2 (NMC622) along with enhancement mechanical strength. The effect ozone-treated SWCNTs on NMC622 demonstrated means electrochemical impedance spectroscopy in-situ dilatometry. Compared conventional containing electrode, presence decreases irreversible height change occurring formation 276 nm 86 overall ∼5.5 times. Furthermore, coulombic efficiencies Ozonated SWCNT improved 1.2% 6.4%, respectively, compared reference after 250 cycles three-electrode assembly, showing great potential for used LiBs. Hence, addition optimized amount modified capable enhancing cycling stability simultaneously.
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ژورنال
عنوان ژورنال: Electrochimica Acta
سال: 2022
ISSN: ['1873-3859', '0013-4686']
DOI: https://doi.org/10.1016/j.electacta.2022.140093