公开(公告)号：US10854923B2

公开(公告)日：2020-12-01

申请号：US16119641

申请日：2018-08-31

Applicant: Battelle Memorial Institute

Inventor： Wu Xu ,  Shuru Chen ,  Ji-Guang Zhang ,  Xia Cao ,  Haiping Jia ,  Bin Liu ,  Xiaodi Ren

IPC: H01M10/0569 ,  H01M4/38 ,  H01M10/0568 ,  H01M10/052 ,  H01M10/42 ,  H01M10/0567

Abstract: Low flammability and nonflammable localized superconcentrated electrolytes (LSEs) for stable operation of lithium and sodium ion batteries are disclosed. Electrochemical devices including the low flammability and nonflammable LSEs are also disclosed. The low flammability and nonflammable LSEs include an active salt, a solvent comprising a flame retardant compound, wherein the active salt is soluble in the solvent, and a diluent in which the active salt is insoluble or poorly soluble. The LSE may further include a cosolvent, such as a carbonate, a sulfone, a sulfite, a sulfate, a carboxylate, an ether, a nitrogen-containing solvent, or any combination thereof. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.

公开(公告)号：US20190252689A1

公开(公告)日：2019-08-15

申请号：US16337812

申请日：2017-10-11

Applicant: Battelle Memorial Institute

Inventor： Wu Xu ,  Bin Liu ,  Ji-Guang Zhang

IPC: H01M4/88 ,  H01M12/08 ,  H01M4/96 ,  H01M4/38

CPC classification number: H01M4/8878 ,  H01M4/04 ,  H01M4/382 ,  H01M4/88 ,  H01M4/96 ,  H01M12/08 ,  Y02E60/128

Abstract: A one-step in-situ electrochemical pre-charging strategy to generate thin protective films simultaneously on the surfaces of both carbon-based air-electrode and metal anode under an inert atmosphere is disclosed. The thin-films are formed from the decomposition of electrolyte during the in-situ electrochemical pre-charging process in an inert environment and can protect both a carbon air-electrode and a metal anode prior to conventional metal-oxygen discharge/charge cycling where reactive reduced oxygen species are formed. Lithium-oxygen cells after such pre-treatment demonstrate significantly extended cycle life which is far more than those without pre-treatment.

公开(公告)号：US20200212486A1

公开(公告)日：2020-07-02

申请号：US16236198

申请日：2018-12-28

Applicant: Battelle Memorial Institute

Inventor： Wu Xu ,  Bin Liu

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0568

Abstract: Electrolytes for lithium ion batteries operable over a wide temperature range are disclosed. A lithium ion battery including a disclosed electrolyte may be operable over a temperature range of from −50 ° C. to 60 ° C. The electrolytes include a lithium salt, a non-aqueous carbonate-based solvent, a cesium salt and/or rubidium salt as a first additive, and two or more additional additives.

公开(公告)号：US20190123390A1

公开(公告)日：2019-04-25

申请号：US16119641

申请日：2018-08-31

Applicant: Battelle Memorial Institute

Inventor： Wu Xu ,  Shuru Chen ,  Ji-Guang Zhang ,  Xia Cao ,  Haiping Jia ,  Bin Liu ,  Xiaodi Ren

IPC: H01M10/0569 ,  H01M10/0568 ,  H01M10/052 ,  H01M4/38

Abstract: Low flammability and nonflammable localized superconcentrated electrolytes (LSEs) for stable operation of lithium and sodium ion batteries are disclosed. Electrochemical devices including the low flammability and nonflammable LSEs are also disclosed. The low flammability and nonflammable LSEs include an active salt, a solvent comprising a flame retardant compound, wherein the active salt is soluble in the solvent, and a diluent in which the active salt is insoluble or poorly soluble. The LSE may further include a cosolvent, such as a carbonate, a sulfone, a sulfite, a sulfate, a carboxylate, an ether, a nitrogen-containing solvent, or any combination thereof. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.