公开(公告)号：WO2019104181A8

公开(公告)日：2019-05-31

申请号：PCT/US2018/062265

申请日：2018-11-21

Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE

Inventor： LI, Xin ,  WU, Fan ,  FITZHUGH, William

IPC: H01M6/14 ,  H01M6/18 ,  H01M4/02 ,  H01M4/62

Abstract: The invention provides compositions containing a solid state electrolyte (SSE) containing an alkali metal and a sulfide for use as the electrolyte matrix in a solid state rechargeable battery. The SSE compositions may further contain phosphorous, silicon, or a dopant atom, such as a halogen. These compositions are advantageous as they use Earth-abundant elements, have high voltage stability, excellent battery cycle performance, and are fabricated and used under conditions that do not require excessive external pressures which would otherwise limit their use in a production battery. In particular, the SSEs have a controllable microstructure, e.g., core-shell structure, that enhances their inherent stability while obviating the need for excessively large pressures to control the electrolyte stability. Methods of producing the compositions and rechargeable batteries including the composition are also provided.

公开(公告)号：WO2019104181A1

公开(公告)日：2019-05-31

申请号：PCT/US2018/062265

申请日：2018-11-21

Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE

Inventor： LI, Xin ,  WU, Fan ,  FITZHUGH, William

IPC: H01M6/14 ,  H01M6/18 ,  H01M4/02 ,  H01M4/62

Abstract: The invention provides compositions containing a solid state electrolyte (SSE) containing an alkali metal and a sulfide for use as the electrolyte matrix in a solid state rechargeable battery. The SSE compositions may further contain phosphorous, silicon, or a dopant atom, such as a halogen. These compositions are advantageous as they use Earth-abundant elements, have high voltage stability, excellent battery cycle performance, and are fabricated and used under conditions that do not require excessive external pressures which would otherwise limit their use in a production battery. In particular, the SSEs have a controllable microstructure, e.g., core-shell structure, that enhances their inherent stability while obviating the need for excessively large pressures to control the electrolyte stability. Methods of producing the compositions and rechargeable batteries including the composition are also provided.

公开(公告)号：WO2020112843A8

公开(公告)日：2020-06-04

申请号：PCT/US2019/063354

申请日：2019-11-26

Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE

Inventor： YE, Luhan ,  FITZHUGH, William ,  WU, Fan ,  LI, Xin

IPC: H01M10/0562 ,  H01M10/058 ,  H01M10/052 ,  H01M10/05 ,  H01M10/04 ,  H01M4/04 ,  H01M4/13 ,  H01M4/131 ,  H01M4/38 ,  H01M4/485 ,  H01M4/525 ,  H01M6/18

Abstract: The invention provides rechargeable batteries including a solid state electrolyte (SSE) containing an alkali metal disposed between two electrodes. The batteries are volumetrically constrained imparting increased stability under voltage cycling conditions, e.g., through microstructure mechanical constriction on the solid state electrolyte and the electrolyte-electrode interface. These batteries of the invention are advantageous as they may be all-solid-state batteries, e.g., no liquid electrolytes are necessary, and can achieve higher voltages with minimal electrolyte degradation.

公开(公告)号：WO2020112843A1

公开(公告)日：2020-06-04

申请号：PCT/US2019/063354

申请日：2019-11-26

Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE

Inventor： YE, Luhan ,  FITZHUGH, William ,  WU, Fun ,  LI, Xin

IPC: H01M10/0562 ,  H01M10/058 ,  H01M10/052 ,  H01M10/05 ,  H01M10/04 ,  H01M4/04 ,  H01M4/13 ,  H01M4/131 ,  H01M4/38 ,  H01M4/485 ,  H01M4/525 ,  H01M6/18

Abstract: The invention provides rechargeable batteries including a solid state electrolyte (SSE) containing an alkali metal disposed between two electrodes. The batteries are volumetrically constrained imparting increased stability under voltage cycling conditions, e.g., through microstructure mechanical constriction on the solid state electrolyte and the electrolyte-electrode interface. These batteries of the invention are advantageous as they may be all-solid-state batteries, e.g., no liquid electrolytes are necessary, and can achieve higher voltages with minimal electrolyte degradation.