Journal Article

FZJ-2022-01814

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Investigation of Lithium Polyacrylate Binders for Aqueous Processing of Ni‐Rich Lithium Layered Oxide Cathodes for Lithium Ion Batteries

Reissig, F.FZJ* ; Puls, S.FZJ* ; Placke, T. ; Winter, M.FZJ* ; Schmuch, R. ; Gómez Martín, A. (Corresponding author)

2022
Wiley-VCH Weinheim

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Please use a persistent id in citations: http://hdl.handle.net/2128/31276  doi:10.1002/cssc.202200401

Abstract: Ni-rich layered oxide cathodes are promising candidates to satisfy the increasing energy demand of lithium ion batteries for automotive applications. Aqueous processing of such materials, although being desirable to reduce costs and improve sustainability, remains challenging due to the Li + /H + -exchange upon contact with water, resulting in a pH increase and corrosion of the aluminum current collector. Herein, an example for tuning the properties of aqueous LiNi 0.83 Co 0.12 Mn 0.05 O 2 electrode pastes using a lithium polyacrylate-based binder to find the “sweet spot” for processing parameters and electrochemical performance is given. Polyacrylic acid is partially neutralized to balance high initial capacity, good cycling stability and the prevention of aluminum corrosion. Optimized LiOH/polyacrylic acid ratios in water are identified, showing comparable cycling performance to electrodes processed with polyvinylidene difluoride requiring toxic N-methyl-2-pyrrolidone as solvent. This work gives an exemplary study for tuning aqueous electrode pastes properties aiming towards a more environmentally friendly processing of Ni-rich cathodes.

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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 - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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