Impact of VC on high temperature cycling of LFP/Gr cells
Join the audience for a live webinar at 6 p.m. BST/1 p.m. EDT on 14 October 2026 LFP/graphite cells are cheap, safe and stable during room temperature operation. However, lifetime at high temperature is very poor and needs to be improved drastically The post Impact of VC on high temperature cycling of LFP/Gr cells appeared first on Physics World .
High-temperature cycling of LFP/Gr cells in electric vehicles and grid energy storage has become crucial due to their increasing adoption. Researchers at Dalhousie University investigated the effects of vinylene carbonate (VC) concentrations (1% to 5%) on cell lifetime, along with lithium salts LiFSI and LiPF6. Upon reaching 80% capacity retention, post-mortem analyses revealed that higher VC concentrations significantly improved cell lifetime, reduced Fe dissolution, and suppressed electrolyte degradation pathways, including ethyl methyl carbonate (EMC) and dimethyl 2,5-dioxahexane carboxylate (DMOHC) formation.
While LiFSI-based LFP/Gr cells showed enhanced performance, they produced gas at 70°C, which could be mitigated by using LiPF6 salt.
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