Crosslinked PVPP Poly(vinylpolypyrrolidone)) Powder as Battery Electrode Binder, 100 g/bottle, CBEBPVPP
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Crosslinked Poly(vinylpolypyrrolidone), commonly known as PVPP or Crospovidone, is a high-performance 3D network version of the standard PVP binder. While linear PVP is water-soluble, the crosslinked structure of PVPP makes it insoluble and highly resilient, specifically engineered to withstand the mechanical and chemical stresses of next-generation batteries. PVPP absorbs electrolyte to facilitate ion transport but does not dissolve. This maintains the physical "bridge" between the active material and the current collector over thousands of cycles. The 3D network acts like a microscopic spring. When materials like Silicon expand during charging (>300%), the crosslinked binder stretches and then contracts back to its original shape, preventing the electrode from "pulverizing."
(1) For Li-S battery system, PVPP acts as a "trap" for polysulfides. The nitrogen atoms in the pyrrolidone rings chemically bind to sulfur species, while the crosslinked network prevents them from "shuttling" to the anode.
(2) For silicon anode, it serves as a mechanical anchor. By forming a covalent 3D network, it keeps silicon particles in electrical contact even as they undergo massive volume changes.
(3) As for dry electrode processing, PVPP/PTFE hybrid binders has been demonstrated well for dry-electrode fabrication. This solvent-free method uses the mechanical toughness of crosslinked PVP to create thick, high-capacity electrodes without the need for toxic NMP.
| Part Number |
CBEBPVPP (C-BEB-PVPP) |
| CAS |
25249-54-1 |
| Chemical Formula |
(C₆H₉NO)n  |
| Appearance |
White Powder |
| Package Size | 100 g/bottle |
Notes: Please try to store the PVPP powders in a dry place (glovebox is the best option).
References:
- M. Aslan, et al. Polyvinylpyrrolidone as binder for castable supercapacitor electrodes with high electrochemical performance in organic electrolytes, J. Power Sources, 2014, 266, 374-383.
- Q. Wu, et al. Insights on the adsorption mechanism of different polyvinylpyrrolidone (PVP)-based battery binders on 2D-materials for LiPF6-Ec-Emc electrolyte via molecular simulations, J. Power Sources, 2024, 619, 235177.