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- Title
Application of a Polyacrylate Latex to a Lithium Iron Phosphate Cathode as a Binder Material.
- Authors
Tian, Mi; Qi, Yanchunxiao; Oh, Eun-Suok; Caballero, Alvaro
- Abstract
In the manufacturing process of lithium-ion batteries, the current organic solvent-based processes will inevitably be replaced with eco-friendly water-based processes. For this purpose, the current organic-soluble binder should be replaced with a water-soluble or water-dispersed binder. In this study, a new polyacrylate latex dispersed in water was successfully applied as a binder of lithium-ion battery cathodes for the first time. One of the biggest advantages of the polyacrylate binder is that it is electrochemically stable at the working voltage of typical cathodes, unlike a conventional water-dispersed styrene-butadiene binder. This implies that the water-dispersed polyacrylate has no limitations for the usage of a cathodic binder. The performance of the polyacrylate binder for lithium iron phosphate cathodes was compared with those of a conventional organic-based polyvinylidene fluoride binder as well as a water-dispersed styrene-butadiene binder. The polyacrylate binder exhibited an electrochemical performance that was comparable to that of an existing styrene-butadiene binder and much better than that of the polyvinylidene fluoride binder. This superior performance of the polyacrylate binder is attributed to the point-to-point bonding mechanism of an emulsified binder, which leads to a strong adhesion strength as well as the low electrical and charge transfer resistances of the cathodes.
- Subjects
BINDING agents; LATEX; CATHODES; STYRENE-butadiene rubber; LITHIUM-ion batteries; LITHIUM-ion battery manufacturing
- Publication
Energies (19961073), 2021, Vol 14, Issue 7, p1902
- ISSN
1996-1073
- Publication type
Article
- DOI
10.3390/en14071902