Nano and Advanced Materials Institute Limited

The Hong Kong University of Science and Technology

Hfc Industry Limited

Chenmin Liu

Shengbo Lu

Chi Ho Kwok

Yong Zhu

Jianping Han

Yam Chong

Cheuk Yin Lee

Li Fu

Ou Dong

Wing Yin Yung

Chi Hin Wong

Wing Lung Hon

Mei Mei Hsu

Soon Yee Liew

Yu Tat Tse

Sze Chun Yiu

Tao Xu

Shihe Yang

Yeming Xu

Song Wang

Jinliang Zhao

Xiaohua Chen

Hong Zhao

Faan Fung Hung

Ka I Lee

Shiwei Qin

Ai Xiang Sun

Lanqi Huang

Pui Keong Chow

Sing Ho Lo

Yubo Cheng

Heng Liu

Hui Pan

Yuen Yung Chan

Zhengfu Qiu

Juncao Bian

Lifeng Cai

Chui Wan Tse

Lanyue Dou

Ning Tu

Shing Yan Choi

Wai Yin Wong

ChiHo Kwok

Kevin Tan

Yijun Liao

Wai Chung Li

Yiu Sun Tam

Dong Lu

Xianxin Lang

Bo Wang

Zhiying Li

Ka Kan Wong

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.

Solar and battery powered long lasting tracker

The present invention provides an EMI shielding device including a flame retarding, thermal interface material composite with a through plane thermal conductivity of no less than 30 W/mK and a dielectric withstanding voltage of no less than 1 kV/mm, where the composite includes at least one dielectric layer of self-aligned, carbon-based materials associated with superparamagnetic particles and at least one layer of fillers including a blend of dielectric heat transfer materials with a thermal or UV curable polymer or phase change polymer. The anisotropic heat transfer carbon-based materials associated with superparamagnetic materials are aligned under a low magnetic field strength of less than 1 Tesla to an orientation that results in a high thermal conductivity direction which can conduct the maximum heat from the adjacent device of the present composite. The present invention also provides a method for preparing the composite.

Electromagnetic interference shielding device comprising a flame retarding, thermal interface material composite, and method for preparation thereof

A cure-on-demand adhesive kit capable of self-sustaining frontal polymerization after a heat or actinic radiation trigger for bonding two substrates is provided. The kit includes a first monomer/oligomer component and a UV or thermal cure catalyst component. In practical application, the first monomer/oligomer component and the UV or thermal cure catalyst component are mixed together to form a ready-to-use prepolymer mixture. The prepolymer mixture is applied onto the surface of a first substrate, and the first substrate is contacted with a second substrate by the mixture applied side. After giving a heat or actinic radiation trigger, a self-sustaining frontal polymerization of the mixture will be started for curing the mixture between two substrates as an adhesive to adhere the two substrates.

Light or heat triggered frontally cured cure-on-demand adhesives kit

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.

Lithium metal battery with dendrite-suppressing coating and production method for same

An anisotropic thermal interface device including plural aligned thermally anisotropic conductive composite layers. Each layer has a first thermal conductivity in a first direction and a second, larger thermal conductivity in a second direction. The aligned thermally anisotropic conductive composite layers extend substantially parallel to each other in the first direction and include 45-95 weight percent graphite flakes aligned in the second direction. The thermally anisotropic conductive composite layers have a binder including a branched siloxane. The thermally anisotropic conductive composite layers are adhered to adjacent thermally anisotropic conductive composite. The thermally anisotropic conductive composite layers have a second thermal conductivity of 25 to 45 W/mK. The anisotropic thermal interface device has an arithmetic average surface roughness of 5 to 20 μm and a tensile strength of 50 to 130 KPa.

Low surface roughness thermal interface device based on graphite with branched siloxane having high through-plane thermal conductivity

A solventless method of making a dry electrode for an electrochemical cell is provided. A solventless electrode material mixture includes 85-99% electrode active material and from 0-10% conductive carbon additive. A polymer binder system is present from 1-15%. The polymer binder system includes one or more polymer binders. The electrode material mixture is mixed at a temperature greater than a softening point or a melting point of at least one polymer binder of the polymer binder system. The electrode material mixture is kneaded into an electrode material dough. The electrode material dough is formed into an electrode material sheet. At least a portion of the electrode material sheet is affixed to a metal current collector to form an electrode.

Fabrication of lithium battery dry electrodes

A foldable ultrathin glass article includes an ultrathin chemically-tempered foldable glass substrate having a thickness of approximately 100 microns or less and a compressive surface stress of at least 100 MPa. A single-layer hard coating is bonded to the first and/or second surface of the ultrathin tempered glass foldable substrate without an adhesive layer. The hard coating includes at least one silsesquioxane having a silicon-oxygen core framework directly bonded to the ultrathin tempered glass foldable substrate. The impact resistance defined by a maximum pen drop height without glass failure is at least four times greater than the ultrathin tempered glass foldable substrate without the hard coating. The hard coating has a surface hardness of at least 7H surface hardness and has a hydrophobic surface with a water contact angle of at least 100°. The coating has a transparency of at least 98 percent compared to uncoated substrates.

Foldable ultrathin glass with transparent, impact-resistant hard coating

The present invention provides a thermally-decomposable consolidated polymer particle encapsulated-electrode for a lithium-ion battery. The electrode includes polymer particles including at least one connection unit and at least one crosslinker in an amount of approximately 40% to 98% by weight and at least one binder material in an amount of approximately from 2% to 60% by weight. The consolidated crosslinked polymer particle coating results in a porous structure encapsulating the electrode. The pressure resistance of the consolidated crosslinked polymer particle coating ranges approximately from 0.5 to 8 MPa and the consolidated crosslinked polymer particle coating is decomposed to release a non-flammable gas and phosphorous-containing molecules so as to prevent thermal runaway at a temperature approximately from 300° C. to 500° C.

Thermal responsive electrode structure for lithium-ion batteries

The invention relates to multi-component shape memory threads, fibers, tubes, or tapes, which includes at least two shape-memory polymeric (SMP-N) components. Each of the at least two SMP-N components is of at least 1% of the total weight, and N is a positive integer starting from 1, and the SMP-N components have a selectively engineered shape recovery temperature (T) between approximately 0° C. to 130° C. Also, when Tand Tare higher than room temperature, the threads, fibers, tubes, or tapes are configured to assume a substantially helical configuration upon heating to above Tand lower than Tby a stimulus when an elongation of the threads, fibers, tubes, or tapes is approximately 30% to approximately 300%, and having a coil diameter from 0.5 to 10 mm and a number of the turns per cm from 5 to 30.

Multi-component shape memory threads, fibers, tubes, tapes and method for producing the same

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.

Cross-linked organic-inorganic solid composite electrolyte for lithium secondary batteries

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.

Secondary lithium-ion batteries comprising in situ thermal curable solid composite electrolyte

The invention relates to a thoroughly modified, functionalized polymeric hard coating material represented by one of the following formulae for a bendable, transparent and photo/thermal curable coating film:[RRSiO]&#x2003;&#x2003;Formula (1);[RRRSiO]&#x2003;&#x2003;Formula (2).This invention further relates to the synthetic method and application of the thoroughly modified, functionalized polymeric hard coating material. The thoroughly modified, functionalized polymeric hard coating material-containing composition for a coating exhibits higher surface hardness of at least 6H on flexible substrates, higher surface hardness of at least 9H on rigid substrates, and a certain degree of flexibility, with potential properties such as a light transparency of at least 85% and/or an antimicrobial effectiveness of at least 99%, and/or anti-scratch ability.

Thoroughly modified, functionalized polymeric hard coating material for coatings, methods for synthesizing the same and applications thereof

A pressure distribution mapping system includes a flexible M&#xd7;N textile-based pressure sensor array. with first and second electrode textile layers and a piezoresistive fabric layer with a sheet resistance of at least 60 k-ohm/square positioned between the first and second electrode textile layers. Individual pressure sensors are formed by an intersection between a row electrically-conductive path and a column electrically-conductive path along with the portion of the piezoresistive layer positioned at the intersection. A measurement system measures the resistance of each pressure sensor of the pressure sensor array. The measurement system includes a reading module with first op-amps connected to each row and second op-amps connected to each column. Plural switches switch between pressure sensor-enabled and pressure sensor-disabled positions to minimize a bus line crosstalk effect during pressure sensor reading A processor scans each pressure sensor and generates a pressure distribution profile based on a measured resistance of each pressure sensor.

Textile pressure sensor array and pressure distribution mapping system

The present invention provides a transparent EMI shielding film that includes a first transparent polymeric substrate layer. A first conductive mesh layer having a first pattern is printed on the first layer, the conductive mesh having a line width from approximately 5 &#x3bc;m to approximately 500 &#x3bc;m and having a space between two adjacent conductive lines of 100 &#x3bc;m to 1000 &#x3bc;m. The conductive mesh blocks electromagnetic signals. A second transparent polymeric layer is positioned over the first transparent polymeric substrate layer having the first conductive mesh layer printed thereon. A second conductive mesh layer having a second pattern is printed on the second transparent polymeric layer, the second pattern being substantially identical to the first pattern, and being substantially identically positioned above the first pattern in order to maximize transparent spaces between adjacent conductive lines. The transparency is approximately 80% or greater in a visible light spectral region.

Transparent EMI shielding film and production method for the same

The present invention provides an anisotropic, thermal conductive, electromagnetic interference (EMI) shielding composite including a plurality of aligned polymer nanofibers to form a polymer mat or scaffold having a first and second planes of orientation of the polymer nanofibers. The first plane of orientation of the polymer nanofibers has a thermal conductivity substantially the same as or similar to that of the second plane, and the thermal conductivity of the first or second plane of orientation of the polymer nanofibers is at least 2-fold of that of a third plane of orientation of the polymer nanofibers which is about 90 degrees out of the first and second planes of orientation of the polymer nanofibers, respectively, while the electrical resistance of each of the first and second planes is at least 3 orders lower than that of the third plane. A method for preparing the present composite is also provided.

Anisotropic heat transfer, electromagnetic interference shielding composite and method for preparation thereof

Growing community of inventors

Hong Kong, China

Chenmin Liu