Quality Control of Vinylene carbonateIn 2019 ,《One-step preparation of poly(ionic liquid)-based flexible electrolytes by in-situ polymerization for dendrite-free lithium ion batteries》 appeared in Chemical Engineering Journal (Amsterdam, Netherlands). The author of the article were Huang, Teng; Long, Man-Cheng; Wang, Xiu-Li; Wu, Gang; Wang, Yu-Zhong. The article conveys some information:
Solid-state battery (SSB) has a new application prospect in the fields of safe energy storage, but the solid electrolyte usually fails to maintain excellent ionic conductivity, good mech. properties and close interfacial contact with the electrode materials simultaneously. A newly-designed poly(ionic liquid)-based quasi solid electrolyte (PIL-QSE) is prepared via 1-step in-situ cross-linked polymerizing 1-vinyl-3-dodecylimidazolium bis(trifluoromethanesulfonyl) imide (VDIM-TFSI), which is filled in poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) porous membrane prepared via phase inversion. The leakage-free PIL-QSE containing a compact cross-linked network structure exhibits optimal performances with outstanding flexibility, favorable thermal stability and improved electrochem. performances including a high room-temperature ionic conductivity of 0.70 mS cm-1, a superior electrochem. window up to 5.0 V as well as a high Li ion transference of 0.52. Also, the PIL-QSE can suppress dendrite formation leading to a good battery performance. The LiFePO4|PIL-QSE|Li cells can maintain a discharge capacity 140.7 mA-h g-1 at 0.05 C with 99.8% coulomb efficiency after 200 cycles and 125.9 mA-h g-1 at 0.1 C with 98.9% capacity contention after 100 cycles at 25°. Because of the flexibility of PIL-QSE, the pouch-type battery based on PIL-QSE cannot only light the red LED lamp in a normal state, but also in a bended/cut state. Both of the excellent performance and easy fabrication of PIL-QSE make it potentially as one of the most promising electrolyte materials for SSPB. In addition to this study using Vinylene carbonate, there are many other studies that have used Vinylene carbonate(cas: 872-36-6Quality Control of Vinylene carbonate) was used in this study.
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.Quality Control of Vinylene carbonate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics