US 12,021,231 B2
Processes for making niobium-based electrode materials
Konstantinos Gerasopoulos, Gambrills, MD (US); Dajie Zhang, Baltimore, MD (US); and Matthew W. Logan, Columbia, MD (US)
Assigned to The Johns Hopkins University, Baltimore, MD (US)
Filed by The Johns Hopkins University, Baltimore, MD (US)
Filed on Apr. 28, 2023, as Appl. No. 18/140,670.
Application 18/140,670 is a division of application No. 17/346,495, filed on Jun. 14, 2021, granted, now 11,682,760.
Claims priority of provisional application 63/061,282, filed on Aug. 5, 2020.
Prior Publication US 2023/0299279 A1, Sep. 21, 2023
Int. Cl. H01M 4/485 (2010.01); C01G 33/00 (2006.01); H01M 4/02 (2006.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01); H01M 10/0565 (2010.01)
CPC H01M 4/485 (2013.01) [C01G 33/006 (2013.01); H01M 4/663 (2013.01); H01M 10/0525 (2013.01); H01M 10/0565 (2013.01); C01P 2002/72 (2013.01); C01P 2002/85 (2013.01); C01P 2004/03 (2013.01); C01P 2004/54 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); H01M 2004/027 (2013.01); H01M 2300/0082 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An anode, comprising: an anode-composition including an active anode species comprising at least one niobate compound, the at least one niobate compound comprising at least one transition-metal-niobate (TMN), at least one post-transition-metal-niobate (PTMN), or both, wherein
the at least one niobate compound is prepared by:
(i) providing a water-soluble niobium-containing source;
(ii) providing a transitional metal source (TMS), a post-transitional metal source (PTMS), or both;
(iii) dissolving (a) the water-soluble niobium-containing source, and (b) the TMS, the PTMS, or both in an aqueous medium to form an intermediate aqueous solution;
(iv) forming an intermediate paste by admixing an inert support material with the intermediate aqueous solution, wherein the inert support material comprises a plurality of particles having an average diameter from about 5 nm to about 200 nm;
(v) optionally coating the intermediate paste on a support substrate; and
(vi) removing the inert support material by subjecting the intermediate paste to a calcination process and providing the TMN and/or the PTMN.