公开(公告)号：US20240372149A1

公开(公告)日：2024-11-07

申请号：US18576492

申请日：2022-07-15

Applicant: DREXEL UNIVERSITY

Inventor： JinWon KIM ,  Vibha KALRA ,  Krishna Kumar SARODE

IPC: H01M10/0569 ,  H01M4/02 ,  H01M4/04 ,  H01M4/583 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0568

Abstract: An electrolyte solvent having a dielectric constant of 10 or less comprising: a) 0% to 30% by volume of one or more of components i)-iii), based on a total volume of the electrolyte solvent: i) one or more unsubstituted cyclic carbonate(s): ii) one or more unsubstituted lactone(s); and iii) one or more unsubstituted oxazolidine(s); and b) 70% to 100% by volume of one or more of components iv)-vii), based on the total volume of the electrolyte solvent: iv) one or more substituted cyclic carbonate(s) having 3-15 carbon atoms: v) one or more substituted lactone(s) having 3-15 carbon atoms; and vi) one or more substituted oxazolidine(s) having 3-15 carbon atoms; and vii) one or more acyclic carbonate(s) having 2-20 carbon atoms. A method of making a cathode and cathodes and batteries made by the methods are also disclosed.

公开(公告)号：US20230034579A1

公开(公告)日：2023-02-02

申请号：US17781924

申请日：2020-12-03

Applicant: DREXEL UNIVERSITY

Inventor： Michel W. BARSOUM ,  Michael S. CAREY ,  Rahul Nagesh PAI ,  Vibha KALRA ,  Varun R. NATU

IPC: H01M4/58 ,  C01B32/907 ,  H01M4/36 ,  H01M4/62 ,  H01M4/04

Abstract: Provided are methods of effecting cation exchange in MXene materials so as to stabilize the materials. Also provided are compositions, comprising layered MXene materials that comprise an organic cation between layers. Also provided are MXene compositions comprising a chalcogen disposed thereon, the MXene composition further optionally comprising a quaternary ammonium halide disposed thereon.

公开(公告)号：US20240274831A1

公开(公告)日：2024-08-15

申请号：US18568358

申请日：2022-06-10

Applicant: DREXEL UNIVERSITY

Inventor： Rahul Nagesh PAI ,  Vibha KALRA ,  Michel W. BARSOUM ,  Hussein O. BADR

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/13 ,  H01M10/052

CPC classification number: H01M4/628 ,  H01M4/13 ,  H01M4/623 ,  H01M10/052 ,  H01M2004/028

Abstract: By combining two-dimensional (2D) transition metal oxide and/or carbo-oxides with sulfur, one can form cathodes for use in Li—S batteries, which batteries in turn exhibit high capacity and other attractive characteristics. Accordingly, provided herein are methods, comprising: forming an admixture that comprises sulfur, a 2D transition metal carbo-oxide, and optionally a conductive material. Also provided are electrodes, comprising sulfur, a 2D transition metal carbo-oxide, and optionally a conductive material. Further provided are energy cells, the energy cell comprising a first electrode according to the present disclosure. Additionally provided are methods, the methods comprising discharging an energy cell according to the present disclosure or charging an energy cell according to the present disclosure. Also provided are electrical devices, comprising an energy cell according to the present disclosure.