Journal Article

PUBDB-2023-06171

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Toluene‐Mediated Morphology Tuning of Diblock Copolymer‐Templated Porous Si/Ge/K/C Thin Films for Li‐Ion Batteries

Weindl, C. L.Extern* ; Wu, K. ; Fajman, C. E. ; Xu, Z.Extern* ; Zheng, T.Extern* ; Tian, T. ; Harder, C.DESY* ; Sochor, B.DESY* ; Roth, S. V.XFEL.EU*DESY* ; Fässler, T. F. ; Müller-Buschbaum, P. (Corresponding author)Extern*

2023
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/aesr.202300096  doi:10.3204/PUBDB-2023-06171

Abstract: Amphiphilic diblock copolymer poly(styrene-b-ethylene oxide) templating in combination with sol–gel chemistry is utilized to synthesize porous mixed silicon/germanium/potassium/carbon (Si/Ge/K/C) thin films. As a Si/Ge source, the dissolvable Zintl phase K$_{12}$Si$_{12}$Ge$_5$ is used. The toluene-mediated morphological changes in the porous mixed Si/Ge/K/C thin films are studied with scanning electron microscopy and grazing incidence small/wide-angle X-Ray scattering. A dichloromethane solvent vapor annealing step is applied to study the additional morphological transformation inside the films. Since Ge and Si are promising anode materials in Li-ion batteries, CR2032 half-cells are manufactured with the porous mixed Si/Ge/K/C thin films and characterized by cyclic voltammograms, cycling, and impedance spectroscopy.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Sustainable Materials (FS-SMA)
3. PETRA-D (FS-PETRA-D)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. DFG project 390776260 - EXC 2089: e-conversion (390776260) (390776260)

Experiment(s):

1. PETRA Beamline P03 (PETRA III)

Appears in the scientific report 2023

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Database coverage:
; ; ; Article Processing Charges ; Clarivate Analytics Master Journal List ; DOAJ Seal ; Emerging Sources Citation Index ; Fees ; IF >= 5 ; JCR ; Web of Science Core Collection

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