Journal Article

FZJ-2021-00971

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Improving the NMC111∣ Polymer Electrolyte Interface by Cathode Composition and Processing

Borzutzki, K. K.FZJ* ; Winter, M. (Corresponding author)FZJ* ; Brunklaus, G. (Corresponding author)FZJ*

2020
IOP Publishing Bristol

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Please use a persistent id in citations: http://hdl.handle.net/2128/27378  doi:10.1149/1945-7111/ab7fb5

Abstract: Despite significant improvements of polymer electrolyte properties, the interfaces towards the electrodes often yield high interfacial resistances due to poor contacts, which are bottlenecks for application of newly developed polymer, ceramic or composite electrolytes in lithium metal batteries (LMBs). Herein, the impact of processing as well as slurry composition of LiNi1/3Co1/3Mn1/3O2 (NMC111) based composite cathodes on the achievable electrochemical C-rate performance of LMBs based on quasi-solid single ion conducting polymer electrolytes (SIPE) is demonstrated. Composite cathodes with varying types and amounts of lithiated species are fabricated and systematically compared. Among all considered electrodes, cathodes with an addition of 5 wt% lithiated terephthalic acid (TA Li) yield the highest discharge capacity of 91 mAhg−1 at 1 C for Li metalmidSIPEmidNMC111 cells. Furthermore, similar cells operated with cathodes whose pores are impregnated with 5 wt% SIPE via drop/spin coating even provide a specific discharge capacity of 113 mAhg−1 at 1 C, thereby clearly highlighting the benefit of the selected processing strategy to realize cathodes with substantially improved charge carrier transport networks.

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Contributing Institute(s):

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

Research Program(s):

1. 131 - Electrochemical Storage (POF3-131) (POF3-131)

Appears in the scientific report 2021

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

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