31results about How to "Sufficient surface area" patented technology

The invention discloses a method for preparing a supercapacitor electrode material basic nickel-cobalt carbonate through a hydrothermal method. The method comprises the following steps that metal nickel salt and/or metal cobalt salt and urea are weighed separately and mixed with deionized water, and stirring is performed so that solids can be dissolved to obtain a mixed solution; the mixed solution is poured into a high-pressure reactor, sealing is performed for performing a reaction for 10-16 h under the temperature of 80-110 DEG C, and a reaction product is obtained; the reaction product is separated, washed and dried to obtain basic nickel-cobalt carbonate. According to the method for preparing the supercapacitor electrode material basic nickel-cobalt carbonate through the hydrothermal method, on the basis of control over raw material compatibility and reaction conditions, the three-dimensional porous structure and morphology can be obtained, sufficient wetting and permeation of an electrolyte are promoted, the superficial area of active substances is sufficiently utilized, and the electrochemical performance is improved.

The invention discloses a thermally driven circulation lamp post heat dissipation LED streetlamp provided with two check valves. The LED streetlamp comprises a lamp post, a first connection support, a second connection support and a lamp cap. One end of the first connection support and one end of the second connection support are respectively connected with the lamp post. The other end of the first connection support and the other end of the second connection support are respectively connected with the lamp cap. A condensation section and a liquid storage section are arranged in the lamp post. The lamp post and the first connection support are internally provided with a backflow pipe. An evaporation section is arranged in the lamp cap. A steam pipe is arranged in the second connection support. One end of the backflow pipe is communicated with the liquid storage section. The other end of the backflow pipe is communicated with the steam pipe through the evaporation section. The steam pipe is communicated with the liquid storage section through the condensation section to form a thermally driven circulation loop. A first check valve is arranged on the condensation section, and a second check valve is arranged on the backflow pipe. Heat produced by the LED streetlamp is transferred to the lamp post to be dissipated, other cooling fins are not required additionally, and the LED streetlamp has the advantages of being low in cost, high in reliability of thermally driven circulation and the like.

An electrode catheter is provided with: a shaft (10) having a lumen (11) serving as a fluid passage; an irrigation member (20); and a distal end electrode (30). Irrigation openings (25A) for supplying liquid, which is supplied from the shaft (10), to the surface of the distal end electrode (30) are provided in the irrigation member (20) at equal angular intervals. The distal end of the irrigation member (20) has formed therein liquid guide grooves (26) respectively extending from the irrigation openings (25A) toward the distal end. The distal end electrode (30) has a spherical distal end section (31) including a maximum-diameter section (39) and also has a proximal end section (32). Liquid guide grooves (36) are formed in the surface of the distal end electrode (30), and the liquid guide grooves (36) respectively continue to the guide grooves (26) in the irrigation member (20) and extend toward the distal end until the liquid guide grooves (36) reach at least the maximum-diameter section (39). As a result, the electrode catheter is configured in such a manner that cauterization does not cause an abnormal temperature rise in a part of the distal end electrode, that the surface of the distal end electrode exhibits an excellent cooling effect and an excellent effect of preventing the formation of a thrombus, and that the electrode catheter can perform efficient cauterization treatment.

The invention relates to kitchen utensils and discloses an efficient heat-conversion cooking pot with the bottom surface being covered by stainless steel and a manufacture method of the cooking pot. The efficient heat-conversion cooking pot comprises a single-layer pot body, an aluminum plate covering the bottom of the pot and a covering stainless steel pot bottom, wherein the aluminum plate is placed at the bottom of the single-layer pot body; the bottom of the single-layer pot body and the aluminum plate are covered through the covering stainless steel pot bottom; a plurality of rings of grooves are arranged at the covering stainless steel pot bottom, the cross sections of the grooves are sine-wave-shaped; and a mock black coating subjected to sand blasting is arranged on the external surface of the covering stainless steel pot bottom. The manufacture method comprises the following steps of: manufacturing the plurality of rings of grooves with the sine-wave-shaped cross sections on the covering stainless steel pot bottom; integrally connecting the single-layer pot body, the aluminum plate and the covering stainless steel pot bottom by welding at high frequency; and softening the aluminum plate at a high temperature, and pressurizing the aluminum plate to be formed under the pressurization of the plurality of rings of grooves, thus forming the bottom-covering pot with the plurality of grooves with the sine-wave-shaped cross sections. The efficient heat-conversion cooking pot has high heat conversion efficiency and large surface area for heating, is uniform in heating and convenient to clean, and can absorb heat.

The invention discloses the application of a hydrophobic material. The hydrophobic material is applied to a biological filler and manufactured into a supporting structure, a baffle or an airflow uniform structure which are applicable to a facultative anaerobic region or an aerobic region of a sewage purification system. The application of the hydrophobic material can improve the contact area and the contact time of a water surface and the air, thereby improving the reoxygenation performance of the biological filler.