US 11,721,799 B2
Free-standing, binder-free metal monoxide/suboxide nanofiber as cathodes or anodes for batteries
Arvinder Singh, Philadelphia, PA (US); and Vibha Kalra, Philadelphia, PA (US)
Assigned to Drexel University, Philadelphia, PA (US)
Filed by DREXEL UNIVERSITY, Philadelphia, PA (US)
Filed on Dec. 4, 2020, as Appl. No. 17/112,445.
Application 17/112,445 is a division of application No. 16/372,067, filed on Apr. 1, 2019, granted, now 10,886,525.
Claims priority of provisional application 62/651,525, filed on Apr. 2, 2018.
Prior Publication US 2021/0111390 A1, Apr. 15, 2021
Int. Cl. H01M 4/131 (2010.01); H01M 4/04 (2006.01); H01M 4/505 (2010.01); H01M 10/0525 (2010.01); H01M 4/1391 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/131 (2013.01) [H01M 4/0471 (2013.01); H01M 4/1391 (2013.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of producing a nanofiber mat suitable for use in an electrode of a battery from a solution of metal oxide precursor and carbon-containing polymer, comprising steps of:
electrospinning the solution of metal oxide precursor into nanofibers to form a mat;
heating the mat at a temperature in a range of from 750° C. to 1100° C. for a period of from about 4 hours to about 7 hours in an absence of oxygen under a nitrogen flow to produce the nanofiber mat, and
wherein the metal oxide precursor is selected from the group consisting of titanium isopropoxide Ti{OCH(CH3)2}4, niobium ethoxide Nb2(OC2H5)10, vanadyl acetylacetonate C10H14O5V, iron acetylacetonate Fe(C5H7O2)3, manganese (II) acetate tetrahydrate, and Mn(CH3COO)2,(H2O)n, where n is a non-negative integer.