公开(公告)号：US20230022046A1

公开(公告)日：2023-01-26

申请号：US17853909

申请日：2022-06-29

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Soon Yee LIEW ,  Yu Tat TSE ,  Ou DONG ,  Sing Ho LO ,  Shengbo LU ,  Li FU ,  Chenmin LIU

IPC: H01M4/38 ,  H01M4/62 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0567 ,  H01M10/052

Abstract: The present invention provides a lithium metal battery having a lithium metal electrode including a cathode, an anode, a separator positioned between the cathode and the anode, an electrolyte, and a lithium metal negative electrode. The lithium metal negative electrode includes a lithium reactive metal layer, the lithium reactive metal layer being formed on a support conductive layer. A dendrite-suppressing coating is formed over the lithium reactive metal layer; the dendrite-suppressing coating is a displacement-reacted metal including silver reacted from decomposition of a silver salt and having an interface reaction product formed from a reaction between the silver salt and the lithium reactive metal layer. The interface reaction product is positioned between the displacement-reacted metal layer and the lithium reactive metal layer. The dendrite suppressing coating permits lithium metal ions to permeate the coating to react electrolytically in an overall battery reaction.

公开(公告)号：US20210218050A1

公开(公告)日：2021-07-15

申请号：US17128170

申请日：2020-12-20

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Hui PAN ,  Jianping HAN ,  Yong ZHU ,  Heng LIU ,  Ou DONG ,  Shengbo LU ,  Chenmin LIU

IPC: H01M10/056 ,  H01M10/0525 ,  H01M12/08 ,  C08G18/24 ,  C08G18/81 ,  C08G18/48 ,  C08G83/00

Abstract: An amorphous composite solid electrolyte is provided that includes one or more three-dimensional branched macromolecules with a core portion and at least three arm portions connected to the core portion. Each arm portion includes a random copolymer or a block polymer comprising a first monomer and a second monomer with a molar ratio of the first monomer to the second monomer in the range from greater than 0 to less than or equal to 1. An ion conductive electrolytic solution including at least one lithium salt solution in an amount of approximately 1 mol/l to 10 mol/l is entrained within the branched macromolecule, with a weight ratio of the branched macromolecule to the ion conducive electrolytic solution equal to or lower than 1:9, such that the branched macromolecule has a swelling degree of at least 5:1 (liquid:polymer in weight) of the ion conductive electrolytic solution.

公开(公告)号：US20220149424A1

公开(公告)日：2022-05-12

申请号：US17460303

申请日：2021-08-29

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Ou DONG ,  Sing Ho LO ,  Zhengfu QIU ,  Wing Lung HON ,  Jianping HAN ,  Yong ZHU ,  Shengbo LU ,  Chenmin LIU

IPC: H01M10/056 ,  H01M10/0525

Abstract: The present invention provides a rechargeable lithium-ion battery with an in situ thermally-curable electrolyte. The thermally-curable electrolyte is cured from the thermally-curable electrolyte precursor solution including a first crosslinking agent, a second crosslinking agent, an initiator, an electrolyte solvent, an electrolyte salt, one or more electrolyte additives, and one or more monomers or a monomer polymerization product. The viscosity of the thermally-curable electrolyte precursor solution is below 200 cps such that the thermally-curable electrolyte precursor solution is infiltrated within the separator and the pores inside the cathode and anode layers then cured to form porous separator and porous electrodes fully permeated with a solid electrolyte.

公开(公告)号：US20180294509A1

公开(公告)日：2018-10-11

申请号：US15924299

申请日：2018-03-19

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Chenmin LIU ,  Chi Ho KWOK ,  Shengbo LU

IPC: H01M10/052 ,  H01M10/04 ,  H01M10/0565

Abstract: A flexible and foldable lithium ion battery is disclosed having an operational bend radius of 180 degrees with no interruption in supply of electrical power. The lithium ion battery includes a high-elasticity separator sponge having a porosity of approximately 70% to approximately 90%. The separator is a polymer-based fiber mat having fibers with a submicron diameter. The separator sponge has a thickness in a range of approximately 5 to 50 microns, an air permeability of approximately 100 to approximately 300 s/100 ml, and a puncture resistance of approximately 350 to approximately 950 N. First and second electrodes are disposed on either side of the separator sponge and include active materials positioned on thin metal current collectors. A liquid electrolyte is absorbed by the separator sponge. The battery may be folded upon itself without loss of power.

公开(公告)号：US20240088397A1

公开(公告)日：2024-03-14

申请号：US18463319

申请日：2023-09-08

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Wei HUANG ,  Soon Yee LIEW ,  Shengbo LU ,  Chenmin LIU

IPC: H01M4/66 ,  H01M4/04 ,  H01M4/80 ,  H01M10/052 ,  H01M50/105

CPC classification number: H01M4/663 ,  H01M4/0409 ,  H01M4/045 ,  H01M4/0471 ,  H01M4/80 ,  H01M10/052 ,  H01M50/105 ,  H01M2004/021

Abstract: A self-assembled freestanding graphene membrane or graphene layer is formed from industrial graphene having a particle size from approximately 1 to 10 microns and cellulose nanofibers having a nanofiber size from approximately 1 to 9 microns. The self-assembled freestanding graphene membrane or graphene layer has a graphene to cellulose nanofiber mass ratio of approximately 12:1 to 20:1, an electrical conductivity of between approximately 5.8 and 7.2 S/cm, and a thermal conductivity of between 2000 and 3000 W m−1 K−1. The freestanding graphene membrane or graphene layer is formed from an aqueous dispersion of graphene and cellulose nanofibers in a mass ratio of graphene to cellulose nanofibers of 20:1 to 10:1 deposited on a substrate followed by self-assembly and drying. A dopant of oxygen, nitrogen, sulfur, nickel, gold, silver, zinc, copper, magnesium, and boron may be precisely incorporated into the graphene membrane or layer.

公开(公告)号：US20220190325A1

公开(公告)日：2022-06-16

申请号：US17543657

申请日：2021-12-06

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Chi Ho KWOK ,  Wing Yin YUNG ,  Wing Lung HON ,  Shengbo LU ,  Chenmin LIU

IPC: H01M4/36 ,  D01D5/00 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505

Abstract: The preset invention provides an electrode structure for a lithium ion battery comprising an electrode selected from a cathode including a lithium-based material or an anode including a conductive material, and a melt-convertible encapsulation layer covering at least one surface layer of the electrode. The melt-convertible encapsulation layer comprises a network of nanofibers having the diameter ranging approximately from 100 to 300 nm and polymer microspheres embedded in and coated on the nanofibrous network, wherein the ratio of the diameter of the polymer microspheres to the diameter of the nanofiber is over 30. The polymer microspheres melt to form a dielectric coating of the electrode so as to prevent fire or thermal runaway at a temperature approximately from 100 to 200° C.

公开(公告)号：US20230378800A1

公开(公告)日：2023-11-23

申请号：US18319493

申请日：2023-05-18

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Cheuk Yin LEE ,  Yam CHONG ,  Shengbo LU ,  Chenmin LIU

IPC: H02J7/35 ,  H02J7/00

CPC classification number: H02J7/35 ,  H02J7/00304 ,  H02J7/007182 ,  H02J7/00308 ,  H02J2207/20

Abstract: A solar-powered position tracker includes a load including one or more of a GPS module, a GPS antenna, a GSM module, or a GSM antenna. The load is powered by a rechargeable battery, which may be charged by one or more of a non-rechargeable primary battery and a solar cell. The solar-powered position tracker includes a battery management system for powering the position tracker by controlling the solar cell, rechargeable battery and the non-rechargeable primary battery. The two-stage battery management system charges the rechargeable battery in two stages and includes a solar management and protection circuit interconnecting the solar cell, and the rechargeable battery. The battery management system is configured to execute a charging process for recharging the rechargeable battery from solar cell and protect the rechargeable battery under a high pulse current discharge process to meet a high current or high pulse current discharge demand by the load.

公开(公告)号：US20230022742A1

公开(公告)日：2023-01-26

申请号：US17851065

申请日：2022-06-28

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Shengbo LU ,  Yong ZHU ,  Wai Yin WONG ,  Wing Lung HON ,  Qiuhong LI ,  Chenmin LlU

IPC: H01M50/411 ,  H01M50/403 ,  H01M50/449

Abstract: The invention discloses a method of manufacturing an electrochemical cell having a polymer separator membrane for separation of electrodes in the electrochemical cell, including providing a cathode and providing a polymer separator membrane. At least one cycle of irradiating the polymer separator membrane is performed by an energy beam under a radiation dose ranging between 50 and 200 kGy to effect a cross-linking in the polymer separator membrane. The polymer separator membrane is maintained at a temperature between 30° C. and 70° C. An anode is then provided. Subsequently, the polymer separator membrane is compressed between the cathode and the anode. An electrolyte is provided to form the electrochemical cell.

公开(公告)号：US20200044236A1

公开(公告)日：2020-02-06

申请号：US16599139

申请日：2019-10-11

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Juncao BIAN ,  Shengbo LU ,  Chenmin LIU ,  Wai Yin WONG ,  Hong ZHAO

IPC: H01M4/133 ,  H01M10/0525 ,  H01M4/66

Abstract: A fast charge lithium ion battery capable of being charged or discharged with 80% capacity retention at C rate of at least 2C is provided in the present invention, which includes a fast charge graphite-based anode; a cathode; and a separator, wherein the anode includes an anode current collector and a fast charge graphite layer deposited on at least one surface of the anode current collector, the fast charge graphite having a lattice constant equals to or larger than 0.3374 nm, a D-band to G-band integrated area ratio (ID/IG) of 0.03 to 0.3, and a surface morphology of a plate-like crystal structure under a scanned electron microscope; the cathode includes a cathode current collector and one or more active materials deposited on at least one surface of the cathode current collector.

公开(公告)号：US20240322247A1

公开(公告)日：2024-09-26

申请号：US18616209

申请日：2024-03-26

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Yan Lung WONG ,  Shengbo LU ,  Chenmin LIU

IPC: H01M10/0567 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M2300/0025

Abstract: Abstract:
A secondary electrochemical device, includes a high-voltage positive electrode, a negative electrode such as a lithium metal electrode, and an optional separator. A non-aqueous liquid electrolyte includes at least one metal-organic polyhedral (MOP) additive in an amount at least 0.1 weight percent. Typically, an upper limit of the additive is approximately 4 weight percent. The MOP additive has a discrete porous nanocage structure including plural metal clusters with organic ligands forming an accessible cavity with open metal sites and organic functionalities configured to trap water, anions, and transition metal species from the non-aqueous liquid electrolyte. The MOP is further configured to facilitate lithium-ion transport, scavenge free radicals, and stabilize electrode-electrolyte interphases.