Figure
5. (A) Schematic illustration of solvent separated ion pairs, contact
ion pairs, aggregates and localized high concentration electrolyte. (B)
Cycle performance of Cu||LFP anode-free cells with
HCEs and conventional carbonate electrolytes. Reproduced with
permission.[44] Copyright 2019, Wiley-VCH. (C,D)
Strategy for formation of robust SEI layer by HCEs with resting
protocols and comparison of cycle performance of different SEI formation
conditions. . Reproduced with permission.[66]Copyright 2019, American Chemical Society.