2results about How to "Help with transmission" patented technology

The invention provides a high-performance all-solid-state electrolytic tank for producing hydrogen by electrolyzing water and a preparation method of the high-performance all-solid-state electrolytic tank. The preparation method mainly comprises the following steps: preparation of electrode powder: preparing (La0. 6Sr0. 4) 0.95 Co0. 2Fe0. 8O3-delta (LSCF) powder by adopting a liquid-phase synthesis method, and preparing MxCe1-xNyO2 powder by adopting a coprecipitation method for an electrode and an isolating layer; preparing a half cell by adopting a co-casting process; an isolating layer and an oxygen electrode are prepared by adopting a silk-screen printing technology, and high-content water vapor is introduced to realize hydrogen production by electrolyzing water. The prepared high-performance all-solid-state electrolytic tank has efficient water electrolysis hydrogen production catalytic activity and Faraday efficiency, can operate at the medium-high temperature of 650-850 DEG C, and can effectively reduce electric energy consumption and improve energy conversion efficiency.

The invention discloses a nerve-like nitrogen-doped carbon confinement multi-component composite material for lithium-sulfur battery diaphragm modification and a preparation method, and relates to the technical field of lithium-sulfur batteries. The composite material comprises a three-dimensionally connected nerve-like nitrogen-doped carbon network and metal carbide nanoparticles confined at network nodes, the nerve-like nitrogen-doped carbon network is composed of carbon fibers and nodes which are connected with each other, the diameter of the nodes is larger than that of the carbon fibers, and the metal carbide nano-particles are wrapped by the graphitized nitrogen-doped carbon layer and embedded and combined at the nodes. The preparation method comprises the steps of precursor solution preparation, hydrothermal self-assembly, freeze drying and segmented heat treatment. According to the invention, the neural network structure is constructed and the metal carbide nanoparticles are confined in situ at the nodes, so that the physical barrier, chemical adsorption and catalytic conversion of polysulfide are realized, the shuttle effect is favorably inhibited, and the cycling stability and rate capability of the lithium-sulfur battery are improved.