TY  - JOUR
AU  - Helmers, Laura
AU  - Frankenberg, Finn
AU  - Brokmann, Julian
AU  - Burmeister, Christine
AU  - Buchheit, Annika
AU  - Kwade, Arno
AU  - Michalowski, Peter
TI  - Functionalized Thiophosphate and Oxidic Filler Particles for Hybrid Solid Electrolytes
JO  - ChemElectroChem
VL  - 10
IS  - 21
SN  - 2196-0216
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2024-02418
SP  - e202300310
PY  - 2023
N1  - Unterstützt durch: BMBF 3XP0202F (3D-SSB) & BMBF 03XP0432A (FB2-Prod)
AB  - To achieve the commercialization of solid-state-batteries (SSBs), solid electrolyte properties need to be further improved. The hybrid solid electrolyte (HSE) approach is expected to combine the favorable properties of different solid electrolyte classes and is therefore systematically investigated. Mixing low amounts of thiophosphate or oxide filler particles (FP) into a polyethylene oxide (PEO) polyethylene glycol (PEG) and lithium salt bis(trifluoromethane)sulfonimide (LiTFSI) matrix cannot improve the electrochemical properties. Silanization of the thiophosphate FPs significantly increases the ionic conductivity to 0.1 mS cm−1 at room temperature compared to 0.017 mS cm−1 for a pure PEO solid electrolyte. Moreover, a correlation between the intrinsic conductivity of the FPs and the resulting conductivity of the HSE is observed. Also, the functionalization is successfully transferred to oxide FPs. In addition to an equally significant increase in ionic conductivity, a strong influence of the crystallite size of the FPs on the resulting ionic conductivity of the HSE was found. The discovered effect of FP surface structure on overall HSE conductivity indicates a participation of the FP surface in ion transport and emphasizes the need for tailored filler design in HSE applications.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001085756300001
DO  - DOI:10.1002/celc.202300310
UR  - https://juser.fz-juelich.de/record/1024752
ER  -