It is well-known that conventional-concentration electrolytes (CCEs) will undergo serious oxidative decomposition in highvoltage lithium-ion batteries, while high-concentration electrolytes (HCEs) have good oxidation stability. However, HCEs are difficult to scale-up for industrial applications due to their high viscosity and cost. Herein, based on the anti-oxidation mechanism of HCE, a novel scheme to improve the stability of CCE at high voltage was proposed. By means of magnetron sputtering LiF on LiNi 0.5 Mn 1.5 O 4 surface and introducing LiPO 2 F 2 additive, a stable cathode electrolyte interphase (CEI) film is constructed in CCE. AFM results show that the constructed CEI film in CCE has better mechanical strength and adhesion than that formed by HCE. Moreover, the battery performance with the constructed CEI film in CCE, which affords high stability at high voltage, fastcharging kinetics, and improved cycling stability (135 mAh g À 1 after 200 cycles), is comparable to that with HCE.
The high price of lithium salts hinders the sustainable development of high concentration electrolytes, while the poor electrochemical performance limits the large-scale application of low concentration electrolytes. Herein, the electrochemical...
Optimizing the properties of solid electrolyte interphase (SEI) layers on graphite electrodes is a crucial method for influencing the performance of cells. However, most studies ignore any potential synergistic effects...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.