Journal Article

FZJ-2021-05004

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Lithium Powder Synthesis and Preparation of Powder‐Based Composite Electrodes for Application in Lithium Metal Batteries

Kolesnikov, A. ; Wulfers, T. ; Kolek, M. ; Bieker, P.FZJ* ; Stan, M. C. (Corresponding author) ; Winter, M. (Corresponding author)FZJ*

2022
Wiley-VCH Weinheim [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/30717  doi:10.1002/ente.202100871

Abstract: The electrochemical performance of lithium metal batteries is affected by many factors, among which the negative electrode is crucial. Although much of the research is focused on lithium metal electrodes from metallic foils, lithium metal powder can also provide several advantages. Herein, the synthesis of lithium metal powder (Lip) using a droplet emulsion technique is described in detail and the scientific background of the method is provided. Furthermore, the electrochemical performance of the composite Lip-based electrodes prepared with conductive carbon additive (Super C65) via the electrode paste-casting method is reported. The results indicate that under the same material loading, the composite Lip-based electrodes can provide at least twice the practical electrode capacity of pure Lip electrodes and with lower overpotentials, as shown in symmetric Li||Li cells. Full cells assembled with an NMC622 cathode and a composite Lip-based electrode are cycled at least for 100 cycles and show improved cycling performance as compared with the full cells assembled with pure Lip electrodes. In addition, the results also conclude that there are four different types of charge storage mechanisms in these composite Lip-based electrodes. These occurring mechanisms should be considered when engineering lithium metal electrodes with various designs.

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Contributing Institute(s):

1. Helmholtz-Institut Münster Ionenleiter für Energiespeicher (IEK-12)

Research Program(s):

1. 1221 - Fundamentals and Materials (POF4-122) (POF4-122)

Appears in the scientific report 2022

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; DEAL Wiley ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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