7 results about "High-temperature electrolysis" patented technology

The application discloses a flow field structure design method for a solid oxide electrolytic cell, and belongs to the technical field of solid oxide electrolytic cells; the method is based on the establishment of an electrolytic cell flow field topology domain, fluid flow, heat transfer and mass transfer processes are coupled modeling, the flow field structure is optimized and designed through the construction of multi-physical field constraint conditions, so that the flow field structure suitable for high-temperature electrolysis working conditions is obtained; the method takes improving the concentration of reaction gas and improving the temperature distribution as the design target, and the volume fraction of the flow channel and the pressure drop of the inlet and outlet are constrained, so that the obtained flow field structure can consider the mass transfer performance, the heat management performance and the operation stability; the flow field structure obtained by the method can effectively reduce the internal temperature gradient of the electrolytic cell, improve the gas distribution uniformity of the reaction area, and thus improve the current density and the operation stability of the electrolytic cell.

This invention belongs to the field of solid oxide electrolytic cells technology and discloses a method for regenerating the performance of a transition metal-doped cerium-based cathode used in high-temperature carbon dioxide electrolysis. The regeneration method involves placing a single cell for high-temperature carbon dioxide electrolysis at an open-circuit voltage and continuously introducing gas into the cathode side at 500-900°C for regeneration, thereby restoring the cathode performance of the single cell. The cathode of the single cell is prepared from cerium-based cathode material. Continuously introducing gas into the cathode side refers to introducing air, CO2, or a mixture thereof, with a gas flow rate of 30-200 mL / min. This invention effectively removes carbonate intermediates or inert species accumulated on the cathode surface during long-term operation, significantly restoring electrochemical activity without damaging the electrode structure. The process is simple and can be completed in situ. After regeneration, the electrolytic performance and long-term stability of the cerium-based cathode material are significantly improved, effectively extending the service life of the solid oxide electrolytic cell.

This invention discloses a surface treatment process for metal tubes used in tables and chairs, comprising: low-temperature degreasing and activation treatment of the metal tubes; non-electrolytic micro-arc etching treatment of the activated metal tubes; immersion of the etched metal tubes in a composite silane-rare earth conversion solution; low-temperature gradient drying treatment of the conversion film layer; coating the dried conversion film surface with a nano-scale ceramic-doped epoxy primer; infrared pre-curing treatment of the primer layer; electrostatic spraying of a composite wear-resistant powder coating on the pre-cured primer surface; step-by-step temperature-curing treatment of the sprayed metal tubes; and natural air cooling of the cured metal tubes to room temperature to complete the surface treatment. This process eliminates the need for high-temperature electrolysis equipment, is simple to operate, environmentally friendly and energy-saving, and can significantly improve the corrosion resistance, coating adhesion and wear resistance of metal tubes. It boasts a high product qualification rate, is suitable for the daily use needs of metal tubes used in tables and chairs, and possesses excellent practicality and innovation.

The invention relates in particular to a method for manufacturing a single repeating unit (SRU) for an electrochemical device, especially for a high-temperature electrolyzer or high-temperature fuel cell, said assembly comprising an interconnector (1) comprising at least one first plate (10) and a second plate (11, 12, 18, 19) superimposed on one another, and at least one current collector (21, 22). The method comprises the following steps: a) application of a brazing filler material to one of the two plates, b) superimposing the plates to form a single repeating unit (SRU), c) positioning in a furnace (4) so ​​that the filler material melts and brazes said at least two plates of said unit together. Figure for the abstract: [Fig. 1]

The application discloses a kind of gas compression and generation equipment for extraterrestrial life maintenance, including the vortex compression mechanism and oxygen generation mechanism connected in sequence;The vortex compression mechanism is connected with gas collection and pretreatment device, for the multi-stage pressurization of the dilute CO2 after pretreatment, and output smooth airflow;The oxygen generation mechanism is used to decompose the pressurized CO2 into oxygen and carbon monoxide under high temperature conditions, and realizes the separation and collection of product;The vortex compression mechanism and high-temperature electrolysis mechanism are closely integrated, the compact structure and lightweight are realized;Power transmission is carried out through the eccentric idler shaft of the dynamic disc vortex track assembly, effectively solving the technical bottleneck of low gas compression efficiency and serious sealing leakage in the low pressure environment of extraterrestrial, the pressurized CO2 is decomposed into oxygen and carbon monoxide by high-temperature solid oxide electrolysis stack;The utilization efficiency of resources is improved, and the closed-loop circulation of key substances is realized.

A battery including a total amount of lithium bis(oxalate)borate (LiBOB) such that a first amount of LiBOB is solid and a second amount of LiBOB is dissolved in an electrolyte when the battery is at application temperature, the first amount of LiBOB being a LiBOB reservoir. The battery also includes a housing and an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, a separator, and the electrolyte. The electrolyte includes the second amount of LiBOB.

The present application relates to the technical field of energy storage heat protection, and discloses a single-phase immersion liquid cooling system thermal runaway emergency isolation device and method. By detecting gas pressure and characteristic gas concentration, the abnormality can be identified immediately after thermal runaway occurs, the detection and response time is significantly shortened, the golden window for subsequent isolation and heat removal is obtained, and emergency failure caused by detection lag is avoided. The control unit can drive the flexible isolation component to expand to physically isolate the fault area and the normal area before the thermal runaway develops to high-temperature combustion, so that the heat, flame and conductive smoke gas are prevented from causing chain diffusion. At the same time, the heat removal unit is started in linkage before the hot cooling liquid is not raised to an extremely high temperature and does not cause large-scale pollution to the entire box, so that the high-temperature electrolyte and the hot cooling liquid are quickly and directionally guided to the external cooling bin for independent cooling, directional heat removal is realized, and the secondary harm of the existing scheme that the hot cooling liquid continues to circulate and heat the normal battery is avoided.