TY  - JOUR
AU  - Scharf, Felix
AU  - Krude, Annalena
AU  - Lennartz, Peter
AU  - Clausnitzer, Moritz
AU  - Shukla, Gourav
AU  - Buchheit, Annika
AU  - Kempe, Fabian
AU  - Diddens, Diddo
AU  - Glomb, Pascal
AU  - Mitchell, Melanie M.
AU  - Danner, Timo
AU  - Heuer, Andreas
AU  - Latz, Arnulf
AU  - Winter, Martin
AU  - Brunklaus, Gunther
TI  - Synergistic Enhancement of Mechanical and Electrochemical Properties in Grafted Polymer/Oxide Hybrid Electrolytes
JO  - Small
VL  - 20
IS  - 47
SN  - 1613-6810
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2024-05581
SP  - 2404537
PY  - 2024
N1  - Zudem unterstützt durch: “FB2-Hybrid” (grant: 13XP0428A), “FB2-TheoDat” (grant: 03XP0435A/E).
AB  - Lithium metal batteries operated with high voltage cathodes are predestined for the realization of high energy storage systems, where solid polymer electrolytes offer a possibility to improve battery safety. Al2O3_PCL is introduced as promising hybrid electrolyte made from polycaprolactone (PCL) and Al2O3 nanoparticles that can be prepared in a one-pot synthesis as a random mixture of linear PCL and PCL-grafted Al2O3. Upon grafting, synergistic effects of mechanical stability and ionic conductivity are achieved. Due to the mechanical stability, manufacture of PCL-based membranes with a thickness of 50 µm is feasible, yielding an ionic conductivity of 5·10−5 S cm−1 at 60 °C. The membrane exhibits an impressive performance of Li deposition in symmetric Li||Li cells, operating for 1200 h at a constant and low overvoltage of 54 mV and a current density of 0.2 mA cm−2. NMC622 | Al2O3_PCL | Li cells are cycled at rates of up to 1 C, achieving 140 cycles at >80% state of health. The straightforward synthesis and opportunity of upscaling as well as solvent-free polymerization render the Al2O3_PCL hybrid material as rather safe, potentially sustainable and affordable alternative to conventional polymer-based electrolytes.
LB  - PUB:(DE-HGF)16
C6  - 39185805
UR  - <Go to ISI:>//WOS:001298262500001
DO  - DOI:10.1002/smll.202404537
UR  - https://juser.fz-juelich.de/record/1031177
ER  -