US 11,916,234 B2
Anhydrous liquid-phase exfoliation of pristine electrochemically-active GeS nanosheets
Mark C. Hersam, Wilmette, IL (US); David Lam, Chicago, IL (US); Kan-Sheng Chen, Chicago, IL (US); and Joohoon Kang, Evanston, IL (US)
Assigned to NORTHWESTERN UNIVERSITY, Evanston, IL (US)
Appl. No. 16/755,680
Filed by NORTHWESTERN UNIVERSITY, Evanston, IL (US)
PCT Filed Oct. 17, 2018, PCT No. PCT/US2018/056296
§ 371(c)(1), (2) Date Apr. 13, 2020,
PCT Pub. No. WO2019/079457, PCT Pub. Date Apr. 25, 2019.
Claims priority of provisional application 62/575,067, filed on Oct. 20, 2017.
Prior Publication US 2021/0194003 A1, Jun. 24, 2021
Int. Cl. H01M 4/58 (2010.01); C01G 17/00 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/5815 (2013.01) [C01G 17/00 (2013.01); H01M 10/0525 (2013.01); C01P 2002/77 (2013.01); C01P 2002/82 (2013.01); C01P 2002/84 (2013.01); C01P 2002/85 (2013.01); C01P 2004/04 (2013.01); C01P 2004/24 (2013.01); C01P 2006/40 (2013.01); H01M 2004/027 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of preparing layered germanium sulfide (GeS), said method comprising:
providing a composition comprising bulk GeS and an anhydrous fluid medium, wherein said anhydrous fluid medium comprises N-methyl-2-pyrrolidone (NMP); and
sonicating said composition to provide a medium comprising nanomaterials comprising layered GeS comprising at least one of mono-layer, bi-layer, tri-layer and p-layer GeS, where n is 4-10.