Realization of high performance polycarbonate-based Li polymer batteries

Graft copolymer electrolytes for high temperature Li-battery applications, using poly(methyl methacrylate) grafted poly(ethylene glycol)methyl ether methacrylate and lithium bis(trifluoromethanesulfonimide)

“…70 mAh g À1 ), but still far from the theoretical capacity. This could possibly be due to poor contact between the solid electrolyte and the electrodes despite the direct casting method, something also observed previously for similar systems by some of us [35]. Similar observations have also been observed for other SPE-based Li-battery cells, where full capacity has not been reached until after months of cycling at elevated temperatures.…”

High-performance solid polymer electrolytes for lithium batteries operational at ambient temperature

“…Although polycarbonate electrolytes have shown good stability and cycling efficiency in Li half-cells at elevated temperature, the low ionic conductivity currently limits the use of these materials to lowpower and/or high-temperature applications [14,16]. We were recently able to demonstrate increased ionic conductivity and better cycling performance for electrolytes based on poly(trimethylene carbonate) (PTMC) on incorporation of ε-caprolactone repeating units in the polymer chains (from 10 to 40 mol%), attributed to increased chain flexibility [17].…”

Aliphatic Polycarbonate‐Based Solid‐State Polymer Electrolytes for Advanced Lithium Batteries: Advances and Perspective

“…Solid electrolyte/electrode contact impedance is always a difficult problem for advanced solid lithium batteries. To this end, based on previous work, Brandell group regulated interfacial compatibility between SPEs and electrode by using PTMC oligomers as buffer layer. Different from the reported technique, this method has the following two merits: (1) greatly improve interfacial wettability without influencing on interfacial stability, and (2) possess high strength.…”

“…The corresponding mapping of d) S and e) N. f) Rate capability comparison between PTMC 8 LiTFSI or PTMC 5 LiBF 4 ‐based LiFePO 4 /Li batteries. Reproduced with permission . Copyright 2015, Elsevier.…”