10 results about "Proton transport" patented technology

The application discloses a kind of double-gate graphene proton transport device in-situ test system and test method under strong magnetic field, the system is double-layer structure, comprising: inner rod, for placing double-gate graphene proton transport device, the inner rod is integrated with temperature control system, for realizing 100mK to 300K variable temperature test environment;Outer rod, it is set in the outer portion of the inner rod, for independently controlling the vacuum or specific atmosphere environment where the device is located.The application also provides a test method, the assembled system is placed into magnetic field environment, scanning is carried out in predetermined magnetic field intensity range, and temperature is controlled to change between 100mK to 300K;Through the first electrical measurement unit and second electrical measurement unit, the curves of proton current and electron current change with magnetic field, temperature and gate voltage are recorded simultaneously.By unique device structure design and system integration scheme, it provides a powerful tool for studying atomic scale proton transport behavior under extreme multi-physical field coupling environment.

The present application relates to a kind of proton exchange membrane and its preparation method, including first exchange layer, intermediate layer and second exchange layer, intermediate layer includes support layer, ion exchange material filled in support layer and water hole, equivalent weight Ew of ion exchange material is not higher than 1600, the thickness H of proton exchange membrane in dry state 干 Not higher than 17 μm, the compactness I of proton exchange membrane is 0.15-0.65, the mass m of support layer per unit area in dry state P 2-10 g;The thickness h of support layer in dry state p 2-8 μm.The existence of water hole reduces water permeation resistance, reduces the difficulty of proton membrane forming proton transport channel, reduces the possibility of water flooding under high humidity condition, the possibility of proton transport channel circuit breaking under high temperature and low humidity condition, ensures high proton conductivity;In addition, the existence of water hole provides ion exchange material swelling deformation space, thereby improving the dimensional stability of proton membrane.

This invention discloses an aqueous zinc-ion battery electrolyte containing aminopyrine as an additive. The electrolyte comprises a water-soluble zinc salt, deionized water, and an additive, aminopyrine, at a concentration of 1-20 mmol / L. The aminopyrine of this invention reacts with H3O through its sulfonic acid group. + The formation of a strong hydrogen bond network significantly suppresses proton transport, which synergistically achieves triple suppression of hydrogen evolution reaction, corrosion and dendrite growth, ultimately guiding uniform zinc deposition and improving battery cycle stability.

This invention discloses a method for preparing a non-fluorinated composite proton exchange membrane. The method uses sulfonated polyether ether ketone (PEEK) as the matrix and incorporates two specific sulfonated covalent organic framework materials. The addition of the sulfonated covalent organic framework forms a continuous hydrogen bond network and highly efficient proton transport channels within the membrane, significantly improving proton conductivity. The composite membrane achieves a proton conductivity of up to 0.41 S / cm at 80°C, approximately three times higher than the unmodified matrix. Simultaneously, the rigid structure of the covalent organic framework effectively enhances the membrane's mechanical strength, increasing its tensile strength to 75 MPa, achieving a synergistic enhancement of proton conductivity and mechanical properties. The non-fluorinated composite proton exchange membrane prepared by this invention exhibits a stable composite membrane structure and excellent overall performance, making it suitable for applications such as proton exchange membrane water electrolysis for hydrogen production.

This invention discloses a polyaromatic hydrocarbon for preparing proton exchange membranes, its preparation method, and its application, belonging to the field of proton exchange membrane material preparation technology. This invention solves problems such as low molecular weight, uneven sulfonation, chain breakage in sulfonated polymers, poor dimensional stability, and poor mechanical properties in proton exchange membrane materials. Using aromatic monomers and 3,5-difluorotrifluoroacetophenone as raw materials, this invention employs a superacid-catalyzed Friedel-Crafts hydroxyalkylation reaction to prepare fluorinated aromatic polymers. Then, sulfonic acid groups are introduced onto the fluorinated aromatic polymers via nucleophilic substitution followed by sulfonation, preparing monosulfonated and disulfonated fluorinated sulfonic acid polymers. Proton exchange membranes are then prepared using these polymers as raw materials. The significant polarity difference between the hydrophobic fluorinated benzene ring side groups and the hydrophilic disulfonic acid groups in this invention is more conducive to forming a microphase separation structure and constructing continuous proton transport channels. Simultaneously, the hydrophobic fluorinated segments effectively suppress membrane swelling and improve its dimensional stability.

This invention provides a ceramic proton exchange membrane for microbial fuel cells and its preparation method, comprising the following steps: mixing clay, an inorganic modifier, and an organic modifier to obtain a solid powder; the inorganic modifier is alumina and silicon dioxide, and the organic modifier is selected from one or more of wheat flour, biochar powder, straw powder, and bamboo powder; the solid powder is ball-milled, granulated, pressed into sheets, and calcined to obtain the ceramic proton exchange membrane. This invention addresses the problems of poor mass transfer performance and low power generation performance of traditional pure clay ceramic membranes. Using clay as the matrix material, and through specific inorganic and organic modifiers, the pore structure of the material is adjusted. A novel ceramic proton exchange membrane is then prepared through ball milling, granulation, pressing, and calcination. This membrane has low manufacturing cost, good proton transport efficiency, and extremely low internal resistance. When applied to microbial fuel cells, it can achieve higher output voltage and more stable power generation performance.

This invention discloses a method and system for real-time pH control and stabilization in online column separation, belonging to the field of ion exchange chromatography separation technology. The method includes: applying a proton perturbation signal to the chromatographic column and detecting its elution response signal to obtain a parameter spectrum characterizing the dynamic buffer capacity of the chromatographic column; inputting the parameter spectrum and the target pH gradient into a physical transport model based on convection, diffusion, and adsorption coupling equations; the physical transport model outputs a pre-distorted pH gradient program to compensate for the dynamic buffer capacity characteristics; and based on the fluid ratio requirements defined by the pre-distorted pH gradient program and varying over time. This allows for the acquisition of dynamic buffer capacity characteristics through proton perturbation testing and the construction of a pre-distorted pH gradient program. Combined with closed-loop iterative optimization, this effectively counteracts the interference of the chromatographic column's dynamic buffer capacity on proton transport, ensuring that the pH curve of the post-column elution accurately matches the target linear gradient and eliminating pH nonlinear distortion and plateau problems.

This invention discloses a method for preparing fuel cell catalyst slurry. By combining long-branched resin solutions and short-branched resin solutions with different EW values, and employing a unique dispersion method, the catalyst is uniformly dispersed in the slurry, improving catalyst utilization efficiency. This results in better proton transport under low electrical density conditions and maintains hydrophobic properties under high electrical density conditions, reducing the risk of flooding. The catalyst slurry prepared by this invention, after being fabricated into a membrane electrode assembly (MEA), can well adapt to the usage requirements under different humidity conditions, solving the problems of low-humidity start-up and high-humidity flooding in fuel cells, and ensuring the performance and service life of the MEA.

This invention relates to the field of zinc-ion battery technology, specifically to an electrolyte and a zinc-ion battery containing the electrolyte. The electrolyte provided by this invention comprises a zinc salt, water, and an additive composition. The additive composition comprises a calcium salt and an amine compound containing three or more hydroxyl groups. The calcium salt provides Ca... 2+ The calcium salt has a strong attraction to electronegative oxygen atoms in H₂O, which can lock in free water molecules in the bulk electrolyte, thereby forming a large solvation sheath, breaking the original hydrogen bond network between water molecules, and thus lowering the freezing point of the electrolyte. However, the calcium salt only acts on the bulk electrolyte and cannot alleviate the capacity loss caused by the slow ion diffusion kinetics at the positive electrode interface. More importantly, during cycling, calcium ions may embed between the MnO₂ material layers, blocking proton transport channels, leading to structural collapse and capacity decay.

The application discloses a kind of double wide area-high acid retention gel state mixed matrix PBI proton exchange membrane and its preparation method and application, the gel state proton membrane is by flexible zirconium-glutamic acid (L-Glu-Zr (P)) or UiO-66 series metal organic framework, polybenzimidazole (PBI), phosphoric acid and water composition, its preparation method includes: with polyphosphoric acid as solvent, under the protection of inert gas, aromatic tetraamine monomer, dicarboxylic acid phenyl monomer high-temperature polycondensation forms PBI polymer solution, adds metal organic framework particle and disperses uniformly, mixed solution is scraped on substrate and experiences from solution to gel state membrane The phase transition process;Proton exchange membrane prepared in the application all shows excellent acid retention capacity, proton transport characteristics, fuel cell performance and stability under the service window of double wide area (temperature-20~240 DEG C, humidity 0~80%RH), has very good application prospect in fuel cell field.