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Patent
CAS Suzhou Institute of Nano Technology and Nano Bionics | Date: 2015-03-11

The disclosure provides a film packaging device, which introduces a drying layer having no influence on the transmittance and stability of a substrate into a packaging structure of a film barrier layer. The drying layer is in a filled groove structure, has a strong hygroscopic effect and has no influence on light transmission at the same time, and can avoid the damage and influence on the stability of the barrier layer and a functional layer of the device caused by hygroscopic expansion. The introduced drying layer may increase the water and oxygen permeation resistance effect of the barrier layer by 1 or 2 orders of magnitude, thereby having an important action on the improvement of the service life of a flexible device, and the drying layer may also be used in an organic/inorganic multilayer alternating flexible packaging film structure, thereby reducing the number of organic/inorganic alternating layers on the basis of guaranteeing a water and oxygen barrier effect.


Disclosed is a porous carbon nanotube microsphere material and the preparation method and use thereof, a lithium metal-skeleton carbon composite and the preparation method thereof, a negative electrode of a secondary battery, a secondary battery, and a metal-skeleton carbon composite. The porous carbon nanotube microsphere material is spherical or spheroidal particles composed of carbon nanotubes. The spherical or spheroidal particles have an average diameter of 1 m to 100 m. A large number of nanoscale pores are composed of interlaced nanotubes inside the particle, and the pore size is 1 nm to 200 nm. The preparation method thereof comprises: mixing and dispersing carbon nanotubes and a solvent, and performing spray drying, to obtain the carbon nanotube microspheres. The lithium metal-skeleton carbon composite is obtained by uniformly mixing lithium metal in a melted state with a porous carbon material carrier and cooling.


Patent
CAS Suzhou Institute of Nano Technology and Nano Bionics | Date: 2017-04-19

The invention provides a nitrogen-doped graphene coated nano sulfur positive electrode composite material, a preparation method, and an application thereof. The composite material includes: an effective three-dimensional conductive network formed by overlapping of nitrogen-doped graphenes, and nano sulfur particles coated by nitrogen doped graphene layers evenly. The preparation method includes: dispersing nitrogen-doped graphenes in a liquid-phase reaction system including at least sulfur source and acid,and depositing nano sulfur particles by an in-situ chemical reaction of the sulfur source and the acid, thereby preparing the positive electrode composite material. The positive electrode composite material of the invention has a high conductivity, a high sulfur utilization rate, and a high rate, thereby restraining the dissolution and shuttle effect in the lithium sulfur batteries, and enhancing the cyclic performance of the batteries.


Patent
CAS Suzhou Institute of Nano Technology and Nano Bionics | Date: 2015-06-09

A terahertz modulator based on low-dimension electron plasma wave, a manufacturing method thereof, and a high speed modulation method are provided. The terahertz modulator includes a plasmon and a cavity. The present disclosure discloses the resonance absorption mechanism caused by collective oscillation of electrons (plasma wave, namely, the plasmon). In order to enhance the coupling strength between the terahertz wave and the plasmon, a GaN/AlGaN high electron mobility transistor structure having a grating gate is integrated in a terahertz Fabry-Prot cavity, and a plasmon polariton is formed arising from strong coupling of the plasmon and a cavity mode.


Disclosed is a porous carbon nanotube microsphere material and the preparation method and use thereof, a lithium metal-skeleton carbon composite and the preparation method thereof, a negative electrode of a secondary battery, a secondary battery, and a metal-skeleton carbon composite. The porous carbon nanotube microsphere material is spherical or spheroidal particles composed of carbon nanotubes. The spherical or spheroidal particles have an average diameter of 1 m to 100 m. A large number of nanoscale pores are composed of interlaced nanotubes inside the particle, and the pore size is 1 nm to 200 nm. The preparation method thereof comprises: mixing and dispersing carbon nanotubes and a solvent, and performing spray drying, to obtain the carbon nanotube microspheres. The lithium metal-skeleton carbon composite is obtained by uniformly mixing lithium metal in a melted state with a porous carbon material carrier and cooling.


Patent
CAS Suzhou Institute of Nano Technology and Nano Bionics | Date: 2015-06-05

The invention provides a nitrogen-doped graphene coated nano sulfur positive electrode composite material, a preparation method, and an application thereof. The composite material includes: an effective three-dimensional conductive network formed by overlapping of nitrogen-doped graphenes, and nano sulfur particles coated by nitrogen doped graphene layers evenly. The preparation method includes: dispersing nitrogen-doped graphenes in a liquid-phase reaction system including at least sulfur source and acid, and depositing nano sulfur particles by an in-situ chemical reaction of the sulfur source and the acid, thereby preparing the positive electrode composite material. The positive electrode composite material of the invention has a high conductivity, a high sulfur utilization rate, and a high rate, thereby restraining the dissolution and shuttle effect in the lithium sulfur batteries, and enhancing the cyclic performance of the batteries.


Kong L.,CAS Suzhou Institute of Nano Technology and Nano Bionics | Chen W.,CAS Suzhou Institute of Nano Technology and Nano Bionics
Advanced Materials | Year: 2014

Bio-inspired actuation materials, also called artificial muscles, have attracted great attention in recent decades for their potential application in intelligent robots, biomedical devices, and micro-electro-mechanical systems. Among them, ionic polymer metal composite (IPMC) actuator has been intensively studied for their impressive high-strain under low voltage stimulation and air-working capability. A typical IPMC actuator is composed of one ion-conductive electrolyte membrane laminated by two electron-conductive metal electrode membranes, which can bend back and forth due to the electrode expansion and contraction induced by ion motion under alternating applied voltage. As its actuation performance is mainly dominated by electrochemical and electromechanical process of the electrode layer, the electrode material and structure become to be more crucial to higher performance. The recent discovery of one dimensional carbon nanotube and two dimensional graphene has created a revolution in functional nanomaterials. Their unique structures render them intriguing electrical and mechanical properties, which makes them ideal flexible electrode materials for IPMC actuators in stead of conventional metal electrodes. Currently although the detailed effect caused by those carbon nanomaterial electrodes is not very clear, the presented outstanding actuation performance gives us tremendous motivation to meet the challenge in understanding the mechanism and thus developing more advanced actuator materials. Therefore, in this review IPMC actuators prepared with different kinds of carbon nanomaterials based electrodes or electrolytes are addressed. Key parameters which may generate important influence on actuation process are discussed in order to shed light on possible future research and application of the novel carbon nanomateials based bio-inspired electrochemical actuators. Carbon nanotubes and graphene have exceptional electrical, mechanical, and electromechanical properties, which makes them ideal candidates for advanced actuator materials. In this review, fundamental and recent developements of these carbon nanomaterials based IPMC electrochemical actuators are discussed in order to shed light on next-generation bio-inspired actuators with higher performance. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Patent
CAS Suzhou Institute of Nano Technology and Nano Bionics | Date: 2016-01-13

The present invention discloses a porous lithium manganese phosphate-carbon composite material, and a preparation and application thereof. Multiple nano-pores are distributed in the composite material, and the composite material comprises a lithium manganese phosphate material and 0.1 wt% to 30 wt% of carbon, wherein the carbon is at least from amorphous carbon, carbon nanotubes or carbon nanofibers. The method for preparing the porous lithium manganese phosphate-carbon composite material comprises the following steps of: mixing a porous pyrophosphate material with a doped metal source, a lithium source, phosphate and a carbon source and then drying them to obtain a reaction precursor, and calcining the reaction precursor at a constant temperature under a protective atmosphere to obtain the composite material. The lithium manganese phosphate material contains compounds in a general formula of LiMn_(x)M_(1-x)PO_(4), and the porous pyrophosphate material contains compounds in a general formula of (Mn_(x)M_(1-x))_(2)P_(2)O_(7) and 0 wt% to 50 wt% of carbon, where M comprises a transition metal, and 0.6x1. When applied in batteries, for example, used as the cathode material of Li-ion secondary batteries, the composite material provided by the present invention is high in specific capacity, rate performance and tap density, low in the content of carbon, high in the content of active substance, simple in preparation and easy for large-scale production.


Patent
CAS Suzhou Institute of Nano Technology and Nano Bionics | Date: 2016-11-30

The present invention discloses a wafer-level semiconductor device and a manufacturing method thereof. The wafer-level semiconductor device comprises a wafer-level substrate; a plurality of serial groups formed on a surface of the substrate and are disposed in parallel, each serial group comprising a plurality of parallel groups disposed in series, each parallel groups comprising a plurality of unit cells disposed in parallel, wherein each unit cell is an independent functional unit which is formed by processing a semiconductor layer directly grown on a surface of the substrate; and a lead, which is at least electrically connected between two selected parallel groups in each serial group to make ON-voltages of all the serial groups substantially consistent. The device of the present invention, with a simple structure, a simple and convenient manufacturing process, and a high efficiency to produce qualified products, can be put into large-scale production and application.


Patent
CAS Suzhou Institute of Nano Technology and Nano Bionics | Date: 2016-10-12

A bio-enzyme sensor capable of super-hydrophobic solid-liquid-gas three-phase coexistence and a method for preparing the same. The bio-enzyme sensor comprises, from bottom to top, a base material with super-hydrophobic surface, a catalytic material having the function of catalyzing hydrogen peroxide, and bio-enzyme capable of reacting with a substance to be tested to generate hydrogen peroxide. A sufficient amount of oxygen can be provided for enzymatic reaction by forming a state of solid-liquid-gas three-phase coexistence on the surface of the super-hydrophobic material.

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