Polymer electrolytes and interfaces in solid-state lithium metal batteries

Glyme-based electrolytes: suitable solutions for next-generation lithium batteries

“…7 On the other hand, these electrolytes are volatile, flammable, and poorly stable in contact with lithium metal, in particular during prolonged operation. [8][9][10] Therefore, several research studies have been focusing since nineties on optimizing alternative electrolyte solutions, [11][12][13][14][15] such as those prepared by dissolving a lithium salt in a lowly volatile and modestly flammable ether oligomer with a -(CH 2 CH 2 O)-unit, that is, ethylene oxide (EO)-glymes. [16][17][18][19][20][21][22][23][24] EObased glymes can be synthesized from ethylene epoxide by various large scale methods, including reaction in alcoholic environment with sodium following the Williamson mechanism, methylation of glycol ether with methyl sulfate, Lewis acid-catalyzed cleavage of ethylene oxide by ether, and reaction of ethylene glycol with alcohol catalyzed polyperfuorosulfonic acid resin at high temperature and pressure.…”

Designing Versatile Polymers for Lithium-Ion Battery Applications: A Review

“…The employed electrolyte must act as an electrical insulator and ionic conductor, as highlighted before, serving as the dominating parameter for polymer electrolytes [ 7 , 65 ]. To have practical application, this specification should achieve the ionic conductivities of liquid electrolytes, which typically reach values of 10 −3 ~10 −2 S·cm −1 , at RT, as mentioned previously.…”

Promoting Homogeneous Interfacial Li+ Migration by Using a Facile N2 Plasma Strategy for All‐Solid‐State Lithium‐Metal Batteries

“…This was attributed to the unfavorable contact between the HSE-0 s and Li foil, leading to sluggish and uneven interfacial Li + migration. [60] Consequently, Li dendrites were significantly reduced on the Li metal surface when using HSE-Ar-10 s because Ar plasma etching lowered the crystallinity and glass transition temperature, enhancing interfacial Li + transmission. [51] Moreover, no obvious Li dendrites were observed for the HSE-N 2 -10 s battery, indicating that Li 3 N played an important role in inhibiting Li dendrites.…”