6results about How to "Reduce hydrogen evolution" patented technology

The invention discloses a low-temperature-resistant negative electrode zinc paste and a low-temperature alkaline zinc-manganese battery containing the zinc paste. The negative electrode zinc paste comprises the following components in parts by weight: 60-65 parts of zinc powder, 1-2 parts of a composite conductive agent, 0.1-0.3 part of a composite corrosion inhibitor and 35-38 parts of a low-temperature electrolyte; the low-temperature electrolyte comprises a multi-element nonionic surfactant system, a multi-element nano anti-freezing agent system and a mixed solution A, the 3.9 ohm discharge capacity of the battery under the condition of-40 DEG C is larger than or equal to 60% compared with the capacity retention rate at normal temperature, the interface impedance amplification is smaller than or equal to 15%, the hydrogen evolution amount is reduced by 80% on year-on-year basis, the process is compatible with an existing production line, and the battery is suitable for polar scientific investigation and electronic equipment in plateau and cold regions.

The invention discloses a double-component curing filling adhesive with long operation period, low moisture absorption and low hydrogen evolution as well as a preparation method and application of the double-component curing filling adhesive. The two-component curing filling adhesive comprises a component A isocyanate phase and a component B latent amine curing agent phase, and is characterized in that the component A isocyanate phase comprises an isocyanate-terminated prepolymer, epoxy resin, hydrophobic fumed silica, silanized nano aluminum oxide and polyether modified siloxane; and the component B latent amine curing agent phase comprises an acylphosphine oxide photoinitiator, a 4, 4 '-diaminodiphenylmethane curing agent microcapsule, a Lewis acid inhibitor and a hydrogen inhibitor. The two-component curing filling adhesive disclosed by the invention has an operation period of 12 hours; the double-component curing filling adhesive is used for bonding optical fibers, the hydrogen evolution amount (24h, 80 DEG C) is 0.15 mu L / g, and the moisture absorption weight gain rate is 0.13%; the double-component curing filling adhesive prepared by the invention can be completely cured within 120 minutes when being heated at 40 DEG C under 365nm ultraviolet radiation.

The invention provides a preparation method of a porous carbon-loaded zinc and carbonization-coated zinc negative electrode material and a preparation method of a nickel-zinc battery, and the preparation method of the porous carbon-loaded zinc and carbonization-coated zinc negative electrode material comprises the following steps: soaking hollow porous carbon skeleton particles in a zinc plating electrolyte for electrochemical deposition, obtaining galvanized porous carbon particles; baking the galvanized porous carbon particles, adding a phenolic resin solution and a curing agent after baking, and stirring to obtain a phenolic resin galvanized precursor; the phenolic resin zinc plating precursor is introduced into a protective atmosphere for heating and carbonization, and a carbon-coated material is obtained; and adding a silane coupling agent into the carbon-coated material, and drying to obtain the zinc negative electrode material. Zinc is deposited on a hollow porous carbon skeleton, so that the electrochemical performance is improved, and zinc dendrites are prevented; phenolic resin is carbonized and coated with a carbon layer, so that electrolyte is blocked, and side reaction is reduced; the silane coupling agent improves the interface bonding force and improves the interface compatibility between the zinc negative electrode material and the negative electrode binder.

The invention discloses low-viscosity and high-strength optical fiber coloring ink based on a novel photoinitiator system as well as a preparation method, a use method and application of the low-viscosity and high-strength optical fiber coloring ink. The optical fiber coloring ink is prepared from the following components in parts by weight: 30 parts of polyurethane acrylate, 20 to 30 parts of epoxy acrylate, 10 parts of reactive diluent, 2 to 10 parts of coloring pigment, 1.5 to 3 parts of bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide (BAPO), 0.5 to 1.0 part of isopropyl thioxanthone (ITX) and 0.3 to 0.8 part of 2, 4, 6-tri (dimethylaminomethyl) phenol (DMP-30). The optical fiber coloring ink provided by the invention has extremely low hydrogen evolution amount (24h, 100 DEG C) of 0.37 [mu] L / g. The optical fiber coloring ink has low viscosity (2020 mPa.s, 25 DEG C) and high tensile shear strength (13.7 MPa), and compared with existing optical fiber coloring ink, the viscosity is reduced by 50%, the tensile shear strength is improved by 20%, and the curing degree is improved by 8%.

The invention relates to the technical field of electrochemical energy storage, in particular to an aqueous zinc battery electrolyte system for a high-current-density condition and application of the aqueous zinc battery electrolyte system. The aqueous zinc battery electrolyte system comprises zinc salt and a first organic additive, the first organic additive comprises 1, 4-butynediol. According to the electrolyte system with the 1, 4-butynediol as the main interface regulation component and the application of the electrolyte system, hydroxyl and acetylenic bonds in 1, 4-butynediol molecules can act on a water molecule hydrogen bond network and the surface of metal zinc in a synergistic mode, the crystal face orientation and interface reaction kinetics of zinc deposition are regulated and controlled, therefore, disordered growth of zinc dendrites is inhibited, and the service life of the electrolyte system is prolonged. And a uniform and compact deposition layer is obtained.

The application discloses a kind of zinc negative electrode PVA / porous carbon array protective layer femtosecond laser preparation method, zinc negative electrode material and its application, to solve zinc negative electrode dendrite growth, corrosion passivation, hydrogen evolution side reaction highlights and the problems such as existing protective layer preparation process is complex, structure regulation precision is low.The preparation method includes three steps: S1 PVA is mixed with deionized water, heated and stirred to form a semi-thick solution;S2 the solution is uniformly coated on the surface of zinc foil, and a PVA protective layer is formed after drying;S3 PVA protective layer is decomposed by femtosecond laser, and a porous PVA / porous carbon array composite protective layer is prepared.The composite protective layer enhances the interface stability through PVA, and the synergistic effect of porous carbon guiding zinc ion uniform deposition effectively inhibits dendrite growth and corrosion reaction.The application process is simple, raw materials are environmentally friendly and cost is relatively low, suitable for mass production, and provides key technical support for commercialization of aqueous zinc ion battery.