Influences of trace water on electrochemical performances for lithium hexafluoro phosphate- and lithium Bis(oxalato)borate-based electrolytes

The solvation structure, transport properties and reduction behavior of carbonate-based electrolytes of lithium-ion batteries

“… 95 In addition, the hydrolysis of LiPF 6 creates hydrofluoric acid, leading to a pitted and inhomogeneous SEI structure. 96 Therefore, we note the importance of considering specific surface conditions as well as possible impurities when investigating the interfacial reactions between anodes and electrolytes.…”

Performance and ageing behavior of water-processed LiNi0.5Mn0.3Co0.2O2/Graphite lithium-ion cells

“…than the one processed in acidified water (P2), a higher amount of HF is formed upon contact of the electrolyte 49,50 in the cells containing F1' electrodes. HF is known to attack the active material and dissolve TM ions 50,51 .…”

Quasi-solid-state sodium-ion hybrid capacitors enabled by UiO-66@PVDF-HFP multifunctional separators: Selective charge transfer and high fire safety

“…In addition, the trace water and residual reactants in the inactivated UiO-66 structure could induce decomposition reactions of the electrolyte solution, e.g. promoting the NaPF6 decompose to more insoluble POF3 and NaF: (a) NaPF6 → NaF + PF5, (b) PF5 + H2O → POF3 + NaF, and deposit on the SEI surface to increase the Na-ion transfer resistance [71]. Such an excessive Na-ion consumption could also increasingly lead to a capacity fading.…”