TY  - JOUR
AU  - Wagner, Ralf
AU  - Kraft, Vadim
AU  - Streipert, Benjamin
AU  - Kasnatscheew, Johannes
AU  - Gallus, Dennis R.
AU  - Amereller, Marius
AU  - Korth, Martin
AU  - Cekic-Laskovic, Isidora
AU  - Winter, Martin
TI  - Magnesium-based additives for the cathode slurry to enable high voltage application of lithium-ion batteries
JO  - Electrochimica acta
VL  - 228
SN  - 0013-4686
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2017-02789
SP  - 9 - 17
PY  - 2017
AB  - The kinetic stabilization of the cathode/electrolyte interface is essential to enhance cycle life and safety of lithium-ion batteries at high voltage application. The addition of only 2 wt.% Mg powder to the cathode slurry were found to significantly increase the cycle life of LiNi1/3Co1/3Mn1/3O2/Li half cells upon cycling to 4.6 V vs. Li/Li+, in terms of higher capacity retention, less parasitic reactions and less self-discharge. The presence of dissolved Mg2+ cations in the electrolyte during formation of the cell lead to an increased hydrolysis of the conducting salt LiPF6 and the formation of stable and effective LiPFxOy/Mg(PFxOy)2 species on the charged cathode surface.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000395211600002
DO  - DOI:10.1016/j.electacta.2017.01.029
UR  - https://juser.fz-juelich.de/record/828969
ER  -