公开(公告)号：US20210062084A1

公开(公告)日：2021-03-04

申请号：US16981452

申请日：2019-03-18

Applicant: VIRGINIA COMMONWEALTH UNIVERSITY

Inventor： Indika U. ARACHCHIGE ,  Umit OZGUR ,  Denis O. DEMCHENKO ,  Venkatesham TALLAPALLY ,  Tanner A. NAKAGAWARA

IPC: C09K11/66 ,  H01L51/42 ,  H01L51/44

Abstract: Colloidal synthesis of narrowly disperse, near IR emitting Group IV alloy quantum dots with wide range of Sn compositions via reduction of precursor halides is provided, allowing for less-toxic, earth abundant, and silicon-compatible Group IV alloy quantum dots for application in a broad range of electronic and photonic technologies.

公开(公告)号：US20230250515A1

公开(公告)日：2023-08-10

申请号：US18004706

申请日：2020-09-02

Applicant: VIRGINIA COMMONWEALTH UNIVERSITY

Inventor： Dylan D. RODENE ,  Ebtesam H. ELADGHAM ,  Indika U. ARACHCHIGE ,  Ram B. GUPTA

IPC: C22C19/03 ,  B22F9/24 ,  B22F1/054 ,  C25B1/04 ,  C25B11/089

CPC classification number: C22C19/03 ,  B22F9/24 ,  B22F1/054 ,  C25B1/04 ,  C25B11/089 ,  B22F2304/054 ,  B22F2301/15 ,  B22F2201/11

Abstract: Low-cost and earth abundant, Ni1−xMox alloy nanocrystals, with sizes ranging from 18-43 nm and varying Mo composition (0.0-11.4%), were produced by a colloidal chemistry method for alkaline HER reactions. For a water splitting current density of ˜10 mA/cm2, these alloys demonstrate over-potentials of −62 to −177 mV, which are comparable to commercial Pt-based electrocatalysts (−68 to −129 mV). The cubic Ni0.934Mo0.066 alloy nanocrystals exhibit the highest activity as alkaline HER electrocatalysts, outperforming commercial Pt/C (20 wt %) catalyst.