Journal Article

FZJ-2022-02234

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Polysiloxane‐Based Single‐Ion Conducting Polymer Blend Electrolyte Comprising Small‐Molecule Organic Carbonates for High‐Energy and High‐Power Lithium‐Metal Batteries

Jovanovic, S.FZJ* ; Liang, H.-P. (Corresponding author) ; Zarrabeitia, M. ; Chen, Z.FZJ* ; Merz, S.FZJ* ; Granwehr, J.RWTH*FZJ* ; Passerini, S. ; Bresser, D. (Corresponding author)

2022
Wiley-VCH Weinheim

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Please use a persistent id in citations: http://hdl.handle.net/2128/31265  doi:10.1002/aenm.202200013

Abstract: 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.

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Contributing Institute(s):

1. Grundlagen der Elektrochemie (IEK-9)

Research Program(s):

1. 1223 - Batteries in Application (POF4-122) (POF4-122)
2. FestBatt-Charakterisierung - Methodenplattform 'Charakterisierung' im Rahmen des Kompetenzclusters für Festkörperbatterien (13XP0176B) (13XP0176B)

Appears in the scientific report 2022

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 25 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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