5results about How to "Fast dynamics" patented technology

The invention relates to the technical field of aqueous secondary batteries, in particular to an aqueous zinc-iodine battery with high magnification and ultra-long cycle life and a preparation method thereof, the aqueous zinc-iodine battery mainly comprises a zinc-containing negative electrode, an iodine-containing positive electrode and an organic-water hybrid electrolyte; the organic-water hybrid electrolyte mainly comprises a zinc salt and methyl acetoacetate. According to the invention, the iodine-containing positive electrode is matched with the zinc-containing negative electrode, the zinc salt and methyl acetoacetate, and polyiodide ions preferentially react with C atoms in acetyl, so that triiodide ions in a polyiodide polymer generated by the aqueous zinc-iodine battery chemically react with acetyl; a shuttling effect caused by a reaction of a multi-iodine polymer generated by an aqueous zinc-iodine battery and zinc is avoided; moreover, the reversible chemical reaction of acetyl and iodine is utilized, and methyl acetoacetate can participate in the solvation structure of Zn < 2 + >, so that the aqueous zinc-iodine battery has the characteristics of high capacity, fast dynamics, long cycle life and the like.

The invention relates to the technical field of batteries, in particular to a negative electrode material, a preparation method thereof and a battery. The negative electrode material comprises a substrate and a carbon coating layer coating at least part of the surface of the substrate, wherein the matrix comprises hard carbon, the hard carbon is a biomass-based hard carbon material, the hard carbon contains a C element and an O element, and the atomic ratio of O to C is (1: 20)-(1: 10). The preparation method of the negative electrode material comprises the following steps: soaking a pretreated biomass material in a chloride solution, and sintering to obtain a hard carbon precursor; the preparation method comprises the following steps: mixing a hard carbon precursor with an acidic solution, adding peroxydisulfate, mixing, separating and drying to obtain a hard carbon material containing an epoxy group; and carrying out carbon coating treatment on the hard carbon material containing the epoxy group, and forming a carbon coating layer on at least part of the surface of the hard carbon to obtain the negative electrode material. The capacity and the dynamic performance of the negative electrode material can be improved, and the capacity, the first efficiency and the cycle performance of the battery are improved.

The application relates to the technical field of batteries, in particular to a negative electrode material, a preparation method thereof and a battery. The negative electrode material comprises a substrate and a carbon coating layer coated on at least part of the surface of the substrate; wherein the substrate comprises hard carbon, the hard carbon is a biomass-based hard carbon material, and the hard carbon contains C elements and O elements, and the atomic ratio of O and C satisfies O:C=1:20-1:10. The preparation method of the negative electrode material comprises the following steps: soaking pretreated biomass material in a chloride solution, sintering to obtain a hard carbon precursor; mixing the hard carbon precursor with an acid solution, adding peroxodisulfate, and after mixing, separating and drying, obtaining a hard carbon material containing an epoxy group; performing carbon coating treatment on the hard carbon material containing the epoxy group to form a carbon coating layer on at least part of the surface of the hard carbon, and obtaining the negative electrode material. The application can improve the capacity and kinetic performance of the negative electrode material, and improve the capacity, initial efficiency and cycle performance of the battery.

Disclosed is a use of a novel light sensitive channel protein VR 1.0 in the preparation of a retinal photoreceptor cell degenerative disease drug, belonging to the field of biomedicine. The amino acid sequence of the present light sensitive channel protein VR 1.0 is shown in SEQ ID NO. 1, and the nucleotide sequence of the encoding gene thereof is shown in SEQ ID NO. 2. The present light sensitive channel protein VR 1.0 maintains a stable current signal under a high frequency response while having high sensitivity and fast dynamics, and also has a faster response frequency under same light stimulation conditions. The present protein has clear therapeutic effects on retinal photoreceptor cell degenerative diseases, and can be used to prepare a drug for restoring the photoreceptor function in the retina, restoring the vision or photosensitive ability of a subject, and treating retinal degenerative diseases. In the present application, a new idea for developing photogenetic therapy for retinal photosensitive cell degenerative diseases is provided, and options for clinical optogenetic therapy are expanded.

The application discloses a kind of fast charging sodium ion battery hard carbon negative electrode material and preparation method thereof, its preparation method includes the following steps: S1, pretreatment: hard carbon raw materials are broken and sieved, and the hard carbon raw materials with particle size less than 3cm are obtained;S2, low-temperature carbonization: the hard carbon raw materials obtained in step S1 are low-temperature carbonized, and the hard carbon precursor is obtained;S3, crushing and shaping: the hard carbon precursor obtained in step S2 is crushed and treated, and the hard carbon precursor powder is obtained by crushing D50 to 3-200 μm;S4, wet grinding: the hard carbon precursor powder obtained in step S3 is wet sand ground to D50 0.1-3 μm, and the sand grinding slurry is obtained;S5, spray drying: the sand grinding slurry obtained in step S4 is spray dried, and the carbon intermediate is obtained;S6, high-temperature carbonization: the carbon intermediate obtained in step S5 is high-temperature sintered, and the fast charging hard carbon negative electrode material is obtained.The application has the characteristics of good rate performance, excellent fast charging performance and high cycle stability.