9 results about "Electrode gel" patented technology

The invention discloses an all-weather and stretchable ionic liquid gel-based moisture power generation device and a preparation method thereof.The device is of a sandwich structure and comprises an ionic liquid gel moisture power generation functional layer, and a moisture-permeable top electrode and a moisture-resistant bottom electrode are arranged on the two sides of the ionic liquid gel moisture power generation functional layer respectively; the components of the ionic liquid gel moisture power generation functional layer comprise a polymer skeleton with electronegativity and a hygroscopic ionic liquid dispersion medium coupled with the polymer skeleton. Wherein the contact interface of the electrode and the functional layer has a charge adsorption effect generated by a weak oxidation-reduction reaction. The material components of the polymer network and the ionic liquid dispersion medium are regulated and controlled through gel molecular engineering, so that the functional layer has excellent mechanical properties and multifunctional characteristics; and meanwhile, a built-in electric field is introduced into an electrode / gel interface, so that the migration behavior of carriers generated by moisture can be effectively regulated and controlled, and the dependency of a moisture power generation technology on a high-humidity environment is reduced.

Methods and systems for determining a lifespan of an accessory device for a medical device such as a defibrillator are provided. An example method includes detecting an impedance of an electrode gel disposed on an electrode, determining environmental conditions to which the accessory device has been exposed, and using the impedance and environmental conditions to predict the expected lifespan of the accessory device.

This invention provides a flexible energy storage device based on a gel polymer electrolyte and its preparation method, comprising positive and negative electrodes, a gel polymer electrolyte, a separator, and a shell. The gel polymer electrolyte comprises a polymer and an electrolyte fixed within the polymer. The polymer is obtained by copolymerization of isocyanate-terminated polyethers, ether acrylates, and acrylate monomers containing hydroxyl groups and at least two olefinic unsaturated bonds under the action of an initiator; its molecular structure is a highly cross-linked network structure. By applying the gel polymer electrolyte to flexible energy storage devices, this invention improves upon the poor mechanical strength of traditional polymer electrolytes, enabling flexible energy storage devices to possess advantages such as high safety, excellent electrochemical performance, and good practicality. It maintains high conductivity even under deformation and pressure conditions, effectively preventing electrolyte leakage. This has significant implications for the practical application of flexible functional devices.

The invention discloses a synergistic preparation method of a super-large cylindrical sodium-ion battery material adaptive to an NFPP-hard carbon system, and relates to the technical field of preparation of sodium-ion battery materials. The method sequentially comprises the following steps: preparing an NFPP positive electrode precursor, doping and sintering an NFPP positive electrode, pretreating and chambering a hard carbon negative electrode, loading a hard carbon negative electrode metal oxide, coating and modifying a hard carbon negative electrode gel, and cooperatively adapting positive and negative electrode materials, respectively preparing positive and negative electrode plates, and assembling the super-large cylindrical sodium ion battery. The problems that an NFPP-hard carbon system positive electrode is high in residual alkali, the volume of a negative electrode is expanded, and the positive and negative electrode interface adaptability is poor are effectively solved, the prepared material has high discharge capacity, high coulombic efficiency, excellent rate capability and cycling stability, the performance requirements of the super-large cylindrical sodium ion battery are met, preparation process parameters are controllable, raw materials are easy to obtain, and the material is suitable for large-scale production and has wide application prospects. The method has a good application prospect in the field of new energy storage.

The invention relates to the technical field of mechanical sensing devices, in particular to a microphase separation ionic gel tactile sensor and a preparation method thereof, and the preparation method comprises the following steps: S1, preparing an ionic gel precursor solution; s2, regulating and controlling the internal phase separation size of the ionic gel; s3, preparing an ionic gel film; s4, an Au-PET electrode is prepared; and S5, preparing the device. According to the method, the phase separation characteristic size of the ionic gel can be adjusted to be in the nm scale, slow formation of an electrode-gel interface EDL is controlled, and long-time continuous and stable output of an electric signal under the steady-state force contact condition is achieved.

This invention provides a fibrous flexible aqueous zinc battery, its preparation method, and its applications. The invention utilizes an electro-induced interfacial polymerization method to construct a tightly adhered in-situ composite hydrogel electrolyte on the electrode surface. Compared to traditional gel electrolytes, due to the enrichment of charged components under an electric field before in-situ polymerization, a stronger interfacial interaction is formed between the electrode and the composite hydrogel electrolyte, thus achieving a highly stable electrode-gel electrolyte interface. The in-situ composite hydrogel electrolyte is rich in functional groups such as amide bonds and carboxyl groups. These groups can effectively induce uniform deposition of zinc ions and inhibit the activity of free water molecules at the interface, thereby effectively suppressing dendrite growth and undesirable side reactions, and effectively improving the cycle stability of the aqueous zinc battery under high zinc utilization. The flexible aqueous zinc battery of this invention can be applied to wearable electronic devices, providing a safe, high-performance, and highly stable power supply solution for next-generation flexible wearable devices.

The invention relates to the technical field of medical instruments, and provides a wound treatment device and method.The device comprises a plasma electrode and a gel layer, the plasma electrode comprises a base body and an electrode arranged on the first side of the base body, the gel layer is arranged on the base body, and the plasma electrode is used for activating the gel layer. According to the wound surface treatment device, the gel layer is arranged on one side of the plasma electrode, discharge plasma generated on the surface of the plasma electrode can directly irradiate the surface of a wound, the gel layer can be treated in situ through the discharge effect of the plasma electrode, the activated gel layer is obtained, and activated gel continuously acts on the wound surface; thus, the high efficiency of plasma direct irradiation treatment is firstly utilized, then the gel is activated in situ, the activated gel stores plasma active ingredients to continuously act on the wound, and dual-stage treatment of surface wound rapid intervention and wound long-acting maintenance is achieved, so that the wound treatment effect is improved.

The invention provides composite conductive paste for improving sodium battery positive electrode gel, which is characterized by comprising a conductive agent, a dispersing agent, a viscosity reducer, a solvent and an additive, the additive is oxalic acid, and the mass ratio of the conductive agent to the dispersing agent to the viscosity reducer to the solvent to the additive is (3-7): (0.5-1.5): (0.05-0.5): (88-96): (0.5-2.5). The oxalic acid additive is added into the conductive slurry, and oxalic acid and residual alkali on the surface of the transition metal layered oxide are subjected to neutralization reaction, so that the residual alkali is prevented from being crosslinked and agglomerated with a binder PVDF in the positive electrode slurry, the problem of positive electrode gel of the sodium-ion battery is effectively solved, and the coating quality and the battery performance are prevented from being influenced.

The invention discloses a micro-current stimulation hydrogel composite mask and a preparation method thereof. The composite mask comprises a positive electrode gel mask and a negative electrode gel mask. The positive electrode gel mask comprises a negative electrode gel base material, and a positive electrode electroactive component and a nano conductive material which are dispersed in the positive electrode gel base material. The positive electrode electroactive component adopts Prussian blue and / or nano zinc particles. And the negative electrode gel mask comprises a negative electrode gel base material and a negative electrode electroactive component dispersed in the negative electrode gel base material. And the negative electrode electroactive component adopts magnesium-zinc alloy nanoparticles. The positive electrode gel mask and the negative electrode gel mask provided by the invention can form a metal primary battery, continuously and stably output micro current in a contact area of the mask and the skin, apply continuous and mild skin electrical stimulation, promote blood circulation and cell metabolism of the skin, and achieve beautifying and anti-aging effects.