Enhanced thermal properties of the solid electrolyte interphase formed on graphite in an electrolyte with fluoroethylene carbonate

Online Electrochemical Mass Spectrometry of High Energy Lithium Nickel Cobalt Manganese Oxide/Graphite Half- and Full-Cells with Ethylene Carbonate and Fluoroethylene Carbonate Based Electrolytes

“…Computational and experimental investigations suggest that these effects are due to the comparably high stability of fluorinated carbonates at high potentials 12,33,35 and FEC's specific reductive decomposition properties (reductive CO 2 formation). 15,16,[36][37][38][39] The aim of the study is to present OEMS investigations of O 2 , C 2 H 4 , CO 2 , and POF 3 gas evolution from HE-NCM/SFG6 half-and full-cells during the first two galvanostatic charge/discharge cycles in EC:DEC and FEC:DEC based 1 M LiPF 6 electrolytes. The impact of FEC and EC on overall gas evolution, Li 2 MnO 3 domain activation, cathodic and anodic decomposition reactions, SEI formation, and PF 6 − stability is discussed.…”

An elastic carbon layer on echeveria-inspired SnO2 anode for long-cycle and high-rate lithium ion batteries

“…9a). In impedance spectroscopy, the Nyquist plots typically consist of two semicircles related to the charge transfer processes and a sloped line related to the mass transfer of Li + [33,34]. The high-frequency semicircle is attributed to the SEI film and/or contact resistance, the semicircle in the medium-frequency region is assigned to the charge-transfer impedance on the electrode/electrolyte interface, and the line inclined at approximately 45°to the real axis corresponds to the lithium-diffusion process within electrodes [35].…”

Thermal Analysis on Na Plating in Sodium Ion Battery

“…On the other hand, with FEC, the heat flow profile dramatically changes, exhibiting higher intensity of more than three times than FEC-free one, and even more than one and a half times of Li one. As for bulk Li metal, the previous work 12 shows that the exothermic reactions of electrolytes with Li metal (Li foil) begin at 443 K. The large difference in reactivity between Li dendrite and the Li foil can be attributed to the large difference in surface area as already presented. 7 Additionally, it is well known that, in the case of metal particles, dramatic decrease of the onset temperature for exothermal reaction is observed.…”