%0 Journal Article
%A Wagner, Ralf
%A Kraft, Vadim
%A Streipert, Benjamin
%A Kasnatscheew, Johannes
%A Gallus, Dennis R.
%A Amereller, Marius
%A Korth, Martin
%A Cekic-Laskovic, Isidora
%A Winter, Martin
%T Magnesium-based additives for the cathode slurry to enable high voltage application of lithium-ion batteries
%J Electrochimica acta
%V 228
%@ 0013-4686
%C New York, NY [u.a.]
%I Elsevier
%M FZJ-2017-02789
%P 9 - 17
%D 2017
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000395211600002
%R 10.1016/j.electacta.2017.01.029
%U https://juser.fz-juelich.de/record/828969