TY  - JOUR
AU  - Murmann, Patrick
AU  - Börner, Markus
AU  - Cekic-Laskovic, Isidora
AU  - Winter, Martin
TI  - Influence of lithium-cyclo-difluoromethane-1,1-bis(sulfonyl)imide as electrolyte additive on the reversibility of lithium metal batteries
JO  - Journal of applied electrochemistry
VL  - 46
IS  - 3
SN  - 1572-8838
CY  - Dordrecht [u.a.]
PB  - Springer Science + Business Media B.V
M1  - FZJ-2017-07605
SP  - 339 - 348
PY  - 2016
AB  - Electrolyte solutions containing lithium-cyclo-difluoromethane-1,1-bis(sulfonyl)imide (LiDMSI) as an additive were specifically designed for measurements in lithium plating-stripping model experiments on copper electrodes. LiDMSI was implemented into two different electrolyte solutions. The first electrolyte setup consisted of a 1 M solution of LiTFSI in PC as an electrolyte which is known to show a comparably limited performance for reversible Li deposition. The second setup was comprised 1 M LiAsF6 in 1,3-dioxolane as the base electrolyte which depicts a well-tested performance for lithium deposition–dissolution. The addition of LiDMSI yielded significantly improved results in regard to Coulombic efficiencies and cycling stability in both electrolyte compositions. Furthermore, it negated the formation of high surface area, e.g., dendritic lithium, which depicts the main source for the limited safety of rechargeable lithium metal batteries. In the case of the PC-based electrolyte system, the LiDMSI-containing electrolyte illustrates a slightly lowered over-potential on the copper substrate, while for the dioxolane-based setup the over-potentials were almost completely equal. In order to compare the morphologies of the lithium deposits, SEM images were utilized.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000371469400008
DO  - DOI:10.1007/s10800-016-0924-6
UR  - https://juser.fz-juelich.de/record/840039
ER  -