In 2022,Kum, Lenin W.; Gogia, Ashish; Vallo, Nick; Singh, Deependra Kumar; Kumar, Jitendra published an article in ACS Applied Materials & Interfaces. The title of the article was 《Enhancing Electrochemical Performances of Rechargeable Lithium-Ion Batteries via Cathode Interfacial Engineering》.Formula: C3H2O3 The author mentioned the following in the article:
Li-ion batteries (LIBs) have transformed modern electronics and rapidly advancing elec. vehicles (EVs) due to their high energy and power densities, cycle-life, and acceptable safety. However, the comprehensive commercialization of EVs necessitates the invention of LIBs with much enhanced and stable electrochem. performances, including higher energy/power d., cycle-life, and operational safety, but at a lower cost. Herein, the authors report a simple method for improving the high-voltage (up to 4.5 V) charge capability of LIBs by applying a Li+-ion-conducting artificial cathode-electrolyte interface (Li+-ACEI) on the state-of-the-art cathode, LiCoO2 (LCO). A superionic ceramic single Li+ ion conductor, Li Al Ge phosphate (Li1.5Al0.5Ge1.5(PO4)3, LAGP), was used as a novel Li+-ACEI. The application of Li+-ACEI on LCO involves a scalable and straightforward wet chem. process (sol-gel method). Cycling performance, including high voltage charge, of bare and LAGP-coated cathodes was determined against the most energy-dense anode (Li, Li metal) and state-of-the-art carbonate-based organic liquid electrolyte (OLE). The application of an LAGP-based Li+-ACEI on LCO displays many improvements: (i) reduced charge-transfer and interfacial resistance; (ii) higher discharge capacity (167.5 vs. 155 mA-h g-1) at 0.2 C; (iii) higher Coulombic efficiency (98.9 vs. 97.8%) over 100 cycles; and (iv) higher rate capability (143 vs. 80.1 mA-h g-1) at 4C. Structural and morphol. characterizations have substantiated the improved electrochem. behavior of bare and Li+-ACEI LCO cathodes against the Li anode. The results came from multiple reactions, including the reaction of Vinylene carbonate(cas: 872-36-6Formula: C3H2O3)
Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Formula: C3H2O3
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics