US 11,658,288 B2
Positive electrode composition
Laure Bertry, Aubervilliers (FR); Robin Amisse, Issy-les-Moulineaux (FR); Valérie Buissette, Paris (FR); Marc-David Braida, Bry-sur-Marne (FR); Stéphanie Lesturgez, La Rochelle (FR); and Thierry Le Mercier, Rosny-sous-Bois (FR)
Assigned to RHODIA OPERATIONS, Lyons (FR)
Appl. No. 17/263,819
Filed by RHODIA OPERATIONS, Aubervilliers (FR)
PCT Filed Jul. 30, 2019, PCT No. PCT/EP2019/070549
§ 371(c)(1), (2) Date Jan. 27, 2021,
PCT Pub. No. WO2020/025638, PCT Pub. Date Feb. 6, 2020.
Claims priority of application No. 1857116 (FR), filed on Jul. 30, 2018.
Prior Publication US 2021/0305549 A1, Sep. 30, 2021
Int. Cl. H01M 4/36 (2006.01); C01B 25/455 (2006.01); H01M 4/58 (2010.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01); H01M 10/054 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/364 (2013.01) [C01B 25/455 (2013.01); H01M 4/587 (2013.01); H01M 4/5825 (2013.01); H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 10/054 (2013.01); C01P 2002/77 (2013.01); C01P 2002/82 (2013.01); C01P 2004/03 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2006/11 (2013.01); C01P 2006/12 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A composition comprising particles of NVPF of molecular formula Na3V2(PO4)2F3, which is optionally partially oxidized and which crystallizes in an orthorhombic unit cell of Amam space group, as well as carbon in graphitized form, characterized by (1) a carbon content of between 1.0% and 3.5%, this content being expressed by weight of the element carbon with respect to the total weight of the composition, (2) by a tapped density TD of greater than or equal to 0.9 g/ml, and (3) by a particle size distribution by volume exhibiting the following characteristics:
Dv90≤25.0 μm
Dv50 of between 1.0 μm and 10.0 μm
the distribution being obtained by laser diffraction from a dispersion of the composition in ethanol, in particular in anhydrous ethanol.