Study on Different Water-Based Binders for Li4Ti5O12 Electrodes

Authors :: Catia Arbizzani
Karl-Heinz Pettinger
Maurizio Biso
Christina Toigo
Toigo C.
Arbizzani C.
Pettinger K.-H.
Biso M.
Source :: Molecules, Vol 25, Iss 2443, p 2443 (2020), Molecules, Volume 25, Issue 10
Publication Year :: 2020
Publisher :: MDPI AG, 2020.
Abstract: In this study, Li4Ti5O12 (LTO) electrodes with different types of water-soluble binders are successfully coated upon aluminum foil. Electrodes containing solely sodium alginate (SA) as a binder or a mixed PVDF/carboxymethyl cellulose (CMC) binder show the most stable performance in 1 M LiPF6 in EC/DMC 1:1 in half cell vs. Li, with respect to cycle stability over 100 cycles at 1 C. The electrodes processed with a mixture of PVDF/SA show considerable fading and slightly worse values for rate capability. Each one of the different binders used is eco-friendly, and the whole processing can be performed without the use of organic solvents. Further advantages covering the whole production and recycling process, as well as safety issues during operation, encourage deeper research in this area.