%0 Journal Article
%A Jovanovic, Sven
%A Liang, Hai-Peng
%A Zarrabeitia, Maider
%A Chen, Zhen
%A Merz, Steffen
%A Granwehr, Josef
%A Passerini, Stefano
%A Bresser, Dominic
%T Polysiloxane‐Based Single‐Ion Conducting Polymer Blend Electrolyte Comprising Small‐Molecule Organic Carbonates for High‐Energy and High‐Power Lithium‐Metal Batteries
%J Advanced energy materials
%V 12
%N 16
%@ 1614-6832
%C Weinheim
%I Wiley-VCH
%M FZJ-2022-02234
%P 2200013 -
%D 2022
%X Single-ion conducting polymer electrolytes are considered particularly attractive for realizing high-performance solid-state lithium-metal batteries. Herein, a polysiloxane-based single-ion conductor (PSiO) is investigated. The synthesis is performed via a simple thiol-ene reaction, yielding flexible and self-standing polymer electrolyte membranes (PSiOM) when blended with poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP). When incorporating 57 wt% of organic carbonates, these polymer membranes provide a Li+ conductivity of >0.4 mS cm−1 at 20 °C and a wide electrochemical stability window of more than 4.8 V. This excellent electrochemical stability allows for the highly reversible cycling of symmetric Li||Li cells as well as high-energy Li||LiNi0.6Mn0.2Co0.2O2 (NMC622) and Li||LiNi0.8Mn0.1Co0.1O2 (NMC811) cells for several hundred cycles at relatively high discharge and charge rates. Remarkably, Li||NMC811 cells with high mass loading cathodes provide more than 76% capacity retention at a high current density of 1.44 mA cm−2, thus rendering this polymer electrolyte suitable for high-performance battery applications.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000767680200001
%R 10.1002/aenm.202200013
%U https://juser.fz-juelich.de/record/907823