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1258 results about "All solid state" patented technology

All-solid-state lithium battery with gradient structure and preparation method thereof

ActiveCN103746089AObvious solid electrolyteObvious electrode interfaceFinal product manufactureNon-aqueous electrolyte accumulator electrodesAll solid statePower flow
The invention discloses an all-solid-state lithium battery with a gradient structure and a preparation method thereof. The all-solid-state lithium battery comprises a cathode with a gradient structure layer, a solid electrolyte layer, and a metal anode or an anode with a gradient structure layer; the preparation method comprises the following steps: preparing cathode slurries with different component concentrations or particle sizes or molecular weights, coating a collector electrode with the cathode slurries according to the component concentration gradient or particle size gradient or molecular weight gradient to prepare an electrode layer, coating the electrode layer with the solid electrolyte layer, finally attaching the metal anode, or preparing anode slurries with different component concentrations or particle sizes or molecular weights, coating the electrolyte layer with the anode slurries according to an opposite concentration gradient or particle size gradient or molecular weight gradient based on the preparation method of the cathode electrode layer, and finally attaching a collector electrode to obtain the all-solid-state lithium battery with a gradient structure; the preparation method is simple, and the prepared all-solid-state lithium battery is stable in large-rate charge and discharge, and can work normally at large current.
Owner:王海斌

All-solid-state lithium ion battery and preparation method thereof

The invention discloses an all-solid-state lithium ion battery and a preparation method thereof. The all-solid-state lithium ion battery is prepared by an ink-jet printing technology; different components are dissolved into a solvent to prepare slurry; the slurry is put into different ink boxes; designing is carried out by computer program; electrodes and electrolyte are longitudinally printed in a stepwise gradient manner; the electrolyte longitudinally changes in electrode plates in a gradient manner; the interface impedance of an electrode active material/electrolyte can be reduced by the gradient structure distribution of the electrolyte in the electrode plates; deep conduction of lithium ions is facilitated; the capacity property of the active material is put into the greatest play; and other parts, except for a current collector, of the all-solid-state lithium ion battery structure prepared by ink-jet printing form an overall lamination structure. Various components in the lamination structure are in tight contact and regular arrangement, so that the interface impedance is much lower than that of the all-solid-state lithium ion battery which is prepared in a mechanical superposition manner; and the ink-jet printing mode is convenient, fast and suitable for large-scale production.
Owner:HARBIN INST OF TECH

Ultra-thin, self-supporting, flexible and all-solid-state super capacitor and manufacturing method thereof

The invention discloses an ultra-thin, self-supporting, flexible and all-solid-state super capacitor and a manufacturing method of the ultra-thin, self-supporting, flexible and all-solid-state super capacitor. The super capacitor comprises a position electrode, a solid electrolyte and a negative electrode, wherein the solid electrolyte is located between the positive electrode and the negative electrode to separate the positive electrode and the negative electrode, and the solid electrolyte evenly permeates inside a porous structure of the positive electrode and a porous structure of the negative electrode. The positive electrode and the negative electrode are made of carbon nanometer materials or carbon nanometer composite materials, and the outer side of the positive electrode and the outer side of the positive electrode are not completely embedded by the solid electrolyte and can be used for collecting currents. The thickness of the super capacitor is within the range of 10 nanometers to 10 micrometers, the inner portion of the capacitor is provided with no diaphragm, the outer portion of the capacitor needs no metal current collecting electrode or encapsulation, self-supporting can be realized, and at the same time the capacitor has high specific capacitance, high power density, high energy density, long life and high stability. The super capacitor has the advantages of being superior in performance, simple in manufacturing technology, and capable of satisfying the development demands of flexible, miniature, light electronic products at the same time, and having wide application prospects.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI

All-solid-state lithium-sulfur battery

The invention discloses an all-solid-state lithium-sulfur battery. The all-solid-state lithium-sulfur battery comprises a sulfur positive electrode, a lithium or lithium alloy negative electrode, and a lithiated sulfoacid polymer solid electrolytic diaphragm; the solid electrolytic diaphragm is positioned between the sulfur positive electrode and the lithium or lithium alloy negative electrode; the sulfur positive electrode comprises a sulfur-containing active material, a conductive agent and a lithiated sulfoacid polymer; and the sulfur positive electrode, the lithiated sulfoacid polymer solid electrolyte and the lithium or lithium alloy negative electrode are assembled in a superimposition manner in sequence to form the battery. The room temperature ionic conductivity of the lithiated sulfoacid polymer solid electrolyte is greater than 10<-5>S/cm, and complexing of a lithium salt is not needed; the preparation method is simple; in addition, the room temperature ionic conductivity of the lithiated sulfoacid polymer solid electrolyte is better than that of a common inorganic-organic composite solid electrolyte; the sulfur positive electrode pole piece is prepared by adopting a polymer emulsion, and an efficient "sulfur/carbon/solid electrolyte" interface is established in the electrode, so that the activity of the sulfur electrode is improved and the battery with excellent performance is obtained; and in addition, the existing pole piece coating process and equipment can be utilized, and large scale production can be facilitated.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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