TY  - JOUR
AU  - Yan, Peng
AU  - Shevchuk, Mykhailo
AU  - Wölke, Christian
AU  - Pfeiffer, Felix
AU  - Berghus, Debbie
AU  - Baghernejad, Masoud
AU  - Röschenthaler, Gerd-Volker
AU  - Winter, Martin
AU  - Cekic-Laskovic, Isidora
TI  - Blended Salt Electrolyte Design for Enhanced NMC811||Graphite Cell Performance
JO  - Small structures
VL  - 5
IS  - 4
SN  - 2688-4062
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2024-00433
SP  - 2300425
PY  - 2024
AB  - The high energy density, nickel-rich layered cathode material LiNi0.8Mn0.1Co0.1O2(NMC811) is recognized as a promising candidate for next-generation batterychemistries. However, due to their structural and interfacial instability, nickel-richNMC cathodes still face a number of challenges in practical application. For thisreason, the design and development of novel electrolyte formulations, able tostabilize the nickel-rich cathode|electrolyte interface, are highly demanded. In thiswork, a novel electrolyte is developed using lithium (difluoromethanesulfonyl)(trifluoromethanesulfonyl)imide (LiDFTFSI) and lithium hexafluorophosphate(LiPF6) as salt blend in an organic carbonate-solvent based solvent mixture. Thepresence of LiDFTFSI notably enhances the electrochemical performance of theresulting NMC811||graphite cells. Further advancement of the considered cellchemistry is achieved by introducing the well-known functional electrolyteadditive vinylene carbonate (VC), which was found to feature a synergistic effectwith LiDFTFSI. The formation of a homogenous, effective, and robust solidelectrolyte interphase (SEI) as well as cathode electrolyte interphase (CEI) on thecorresponding electrodes resulted in superior electrochemical performance.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001130274600001
DO  - DOI:10.1002/sstr.202300425
UR  - https://juser.fz-juelich.de/record/1020973
ER  -