公开(公告)号：US20210111403A1

公开(公告)日：2021-04-15

申请号：US17122499

申请日：2020-12-15

申请人： Global Graphene Group, Inc.

发明人： Yu-Sheng Su ,  Minjie Li ,  Hui He ,  Qing Fang ,  Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01M4/52 ,  H01M4/38 ,  H01M4/58 ,  H01M6/14 ,  H01M10/36 ,  H01M4/62 ,  H01M10/052 ,  H01M4/50 ,  H01M10/054 ,  H01M4/46 ,  H01M4/48 ,  H01M6/04

摘要： An electrochemical battery cell comprising an anode having a primary anode active material, a cathode, and an ion-conducting electrolyte, wherein the cell has an initial output voltage, Vi, measured at 10% depth of discharge (DoD), selected from a range from 0.3 volts to 0.8 volts, and a final output voltage Vf measured at a DoD no greater than 90%, wherein a voltage variation, (Vi−Vf)/Vi, is no greater than ±10% and the specific capacity between Vi and Vf is no less than 100 mAh/g or 200 mAh/cm3 based on the cathode active material weight or volume, and wherein the primary anode active material is selected from lithium (Li), sodium (Na), potassium (K), magnesium (Mg), aluminum (Al), zinc (Zn), titanium (Ti), manganese (Mn), iron (Fe), vanadium (V), cobalt (Co), nickel (Ni), a mixture thereof, an alloy thereof, or a combination thereof.

公开(公告)号：US10950861B2

公开(公告)日：2021-03-16

申请号：US15431250

申请日：2017-02-13

申请人： Nanotek Instruments, Inc.

发明人： Aruna Zhamu ,  Bor Z Jang

IPC分类号： H01M4/46 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0568 ,  H01M10/36 ,  H01M4/38 ,  H01M10/0569 ,  H01M10/054 ,  H01M4/02

摘要： Provided is an aluminum secondary battery comprising an optional anode current collector, an anode, a cathode, and an electrolyte in ionic contact with the anode and the cathode, wherein the anode contains aluminum metal or an aluminum metal alloy and the cathode comprises a layer of graphite or carbon material having expanded inter-graphene planar spaces with an inter-planar spacing d002 from 0.43 nm to 2.0 nm as measured by X-ray diffraction. Such an aluminum battery delivers a high energy density, high power density, and long cycle life.

公开(公告)号：US10673094B2

公开(公告)日：2020-06-02

申请号：US15938232

申请日：2018-03-28

申请人： Dunwei Wang ,  Xiahui Yao ,  Jingru Luo ,  Qi Dong

发明人： Dunwei Wang ,  Xiahui Yao ,  Jingru Luo ,  Qi Dong

IPC分类号： H01M10/054 ,  H01M4/134 ,  H01M4/46 ,  H01M4/66 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/36 ,  H01M2/16 ,  H01M4/13

摘要： The present invention demonstrates Br2-based conversion chemistry is a potential route toward rechargeable Mg-batteries. Compared with Mg-ion or Mg-air chemistries, the Mg—Br2 system features fast kinetics and good cyclability. In one embodiment, the present invention provides a rechargeable non-aqueous, dual-electrolyte scheme. In one embodiment, the anolyte consisted of Mg(TFSI)2 dissolved in a monoglyme and diglyme mixture, whereas the catholyte was composed of Mg(TFSI)2 in PYR14TFSI ionic liquid mixed with active bromine species. When Mg was used as the anode, an open circuit voltage of 3.0 V (vs. Mg2+/Mg) was measured.

公开(公告)号：US10593946B2

公开(公告)日：2020-03-17

申请号：US15836993

申请日：2017-12-11

申请人： STOREDOT LTD.

发明人： Carmit Ophir ,  Libi Brakha

IPC分类号： H01M4/58 ,  C08G61/12 ,  H01M10/44 ,  H01M4/04 ,  H01M4/60 ,  H01M4/136 ,  H01M4/583 ,  H01M4/13 ,  H01M4/36 ,  H01M4/46 ,  H01M10/04 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

摘要： Cathodes for a fast charging lithium ion battery, processes for manufacturing thereof and corresponding batteries are provided. Cathode formulations comprise spinel and/or layered structure cathode material with 5-10% of cathode material having an olivine-based structure as polymerization initiator, binder material, and monomer and/or oligomer material selected to polymerize into a conductive polymer upon partial delithiation of the olivine-based structure cathode material during at least a first charging cycle of a cell having a cathode made of the cathode formulation. When the cathode is used in a battery, polymerization is induced in-situ (in-cell) during first charging cycle(s) of the battery to provide a polymer matrix which is evenly dispersed throughout the cathode.

公开(公告)号：US10581086B2

公开(公告)日：2020-03-03

申请号：US15598867

申请日：2017-05-18

申请人： Epsilor-Electric Fuel LTD

发明人： Jonathan Sassen ,  Yuli Zingerman

IPC分类号： H01M6/34 ,  H01M4/46 ,  H01M4/42 ,  H01M2/16 ,  H01M4/48 ,  H01M4/58 ,  H01M4/08 ,  H01M2/36 ,  H01M4/62 ,  H01M4/36 ,  H01M6/32 ,  H01M4/04 ,  H01M2/12 ,  H01M4/76

摘要： A Water Activated Battery characterized by a) At least one anode selected from the group consisting of magnesium, aluminum, zinc and alloys thereof; b) A cathode comprising at least one basic copper salt comprising Cu(OH)2combined with a copper salt CuX (with (n−1) the molar ratio between the CuX and the Cu(OH)2in the basic copper salt), such that a discharge reaction in saline versus a Mg anode could be written nMg+Cu(OH)2.(n−1)CuX=Mg(OH)2+(n−1)MgX+nCu) on a skeletal frame, the cathode further comprising a non-hygroscopic soluble, ionically conductive material; c) at least one cavity separating said cathode and said at least one anode; and d) at least one aperture leading to said at least one cavity for the ingress of an electrolyte-forming, aqueous liquid.

公开(公告)号：US10547060B2

公开(公告)日：2020-01-28

申请号：US15010075

申请日：2016-01-29

申请人： SCHLUMBERGER TECHNOLOGY CORPORATION

发明人： Vladimir Shitikov

IPC分类号： H01M6/34 ,  E21B41/00 ,  H01M4/58 ,  H01M4/04 ,  H01M4/36 ,  H01M4/38 ,  H01M4/42 ,  H01M4/46 ,  H01M4/02

摘要： Methods, systems, and devices for powering downhole tools with an electrochemical device are provided. A downhole power system includes an electrochemical device having an anode and a cathode. The power system includes a downhole tool electrically communicating with the electrochemical device to provide electrical power to the downhole tool. The electrochemical device is activated when immersed in a downhole fluid and inactive when not immersed in the downhole fluid, the downhole fluid functioning as an electrolyte.

公开(公告)号：US20200028204A1

公开(公告)日：2020-01-23

申请号：US16548310

申请日：2019-08-22

申请人： Global Graphene Group, Inc.

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01M10/054 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/62 ,  H01M4/583 ,  H01M4/36 ,  H01M4/70 ,  H01M4/66 ,  H01M4/587 ,  H01M4/46 ,  H01M4/44 ,  H01M4/42 ,  H01M4/38

摘要： Provided is a method of producing a multivalent metal-ion battery comprising an anode, a cathode, and an electrolyte in ionic contact with the anode and the cathode to support reversible deposition and dissolution of a multivalent metal, selected from Ni, Zn, Be, Mg, Ca, Ba, La, Ti, Ta, Zr, Nb, Mn, V, Co, Fe, Cd, Cr, Ga, In, or a combination thereof, at the anode, wherein the anode contains the multivalent metal or its alloy as an anode active material and the cathode comprises a cathode active layer of graphitic carbon particles or fibers that are coated with a protective material. Such a metal-ion battery delivers a high energy density, high power density, and long cycle life.

公开(公告)号：US20200020924A1

公开(公告)日：2020-01-16

申请号：US16580206

申请日：2019-09-24

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Hideharu Takezawa ,  Daisuke Furusawa ,  Yuji Oura ,  Takahiro Takahashi ,  Takahito Nakayama ,  Tomoki Shiozaki

IPC分类号： H01M2/32 ,  H01M4/131 ,  H01M4/46 ,  H01M4/48 ,  H01M4/62

摘要： A positive electrode is disclosed including a positive electrode collector containing aluminum, a positive electrode mixture layer containing a positive electrode active substance constituted from a lithium transition metal oxide, and a protective layer provided between the positive electrode collector and the positive electrode mixture layer. The protective layer contains inorganic compound particles and a conductive material, and has a recessed structure wherein the positive electrode mixture layer is recessed into the protective layer.

公开(公告)号：US20200006805A1

公开(公告)日：2020-01-02

申请号：US16565290

申请日：2019-09-09

申请人： Sila Nanotechnologies, Inc.

发明人： Gleb YUSHIN ,  Bogdan ZDYRKO ,  Kara EVANOFF

IPC分类号： H01M10/0525 ,  H01M4/38 ,  H01M4/46 ,  H01M4/62 ,  H01M10/0568 ,  H01M10/42

摘要： Li-ion batteries are provided that include a cathode, an anode comprising active particles, an electrolyte ionically coupling the anode and the cathode, a separator electrically separating the anode and the cathode, and at least one hydrofluoric acid neutralizing agent incorporated into the anode or the separator. Li-ion batteries are also provided that include a cathode, an anode comprising active particles, an electrolyte ionically coupling the anode and the cathode, and a separator electrically separating the anode and the cathode, where the electrolyte may be formed from a mixture of an imide salt and at least one salt selected from the group consisting of LiPF6, LiBF4, and LiClO4. Li-ion battery anodes are also provided that include an active material core and a protective coating at least partially encasing the active material core, where the protective coating comprises a material that is resistant to hydrofluoric acid permeation.

公开(公告)号：US10461321B2

公开(公告)日：2019-10-29

申请号：US14544760

申请日：2015-02-18

申请人： Nanotek Instruments, Inc.

发明人： Hui He ,  Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01M4/36 ,  H01M4/136 ,  H01M4/38 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/46 ,  H01M10/0525 ,  H01M10/054 ,  H01M4/13 ,  H01M4/58 ,  H01M10/052 ,  H01M10/0568 ,  H01M4/02

摘要： A method of producing a pre-sulfurized active cathode layer for a rechargeable alkali metal-sulfur cell; the method comprising: (a) Preparing an integral layer of meso-porous structure of a carbon, graphite, metal, or conductive polymer having a specific surface area greater than 100 m2/g; (b) Preparing an electrolyte comprising a solvent and a sulfur source; (c) Preparing an anode; and (d) Bringing the integral layer and the anode in ionic contact with the electrolyte and imposing an electric current between the anode and the integral layer (serving as a cathode) to electrochemically deposit nano-scaled sulfur particles or coating on the graphene surfaces. The sulfur particles or coating have a thickness or diameter smaller than 20 nm (preferably 90% or even >95%).