Abstract: A self-locking switch assembly and heat gun, which relates to power tools; switch assembly includes switch, trigger, holder, self-locking structure, and first elastic member, self-locking structure including toggle button deflectably disposed on trigger and abutment block disposed on holder, toggle button having lock position wherein toggle button abuts against abutment block to prevent trigger from sliding towards switch and unlock position wherein toggle button is detached from abutment block so the trigger may be stressed to slide towards trigger, first elastic member being configured to be stressed and deformed when toggle button is deflected from lock position to unlock position and to drive toggle button to be deflected from unlock position to lock position when toggle button is released, holder being provided with stop portion for preventing toggle button at unlock position from rotating back towards lock position, toggle button at unlock position being fitted with stop portion.

Abstract: A temperature anomaly handling method includes: a step when a temperature rise reaches a certain temperature within a first time interval, the control module determines occurrence of temperature anomaly and performs a step in which the control module starts countdown, and in a case that a temperature rise of the temperature sensing element reaches a second temperature within a second time interval, the control module determines that temperature anomaly lasts based on a temperature signal fed back from the temperature sensing element, and performs a step in which the control module executes a protection program. By determining whether temperature anomaly really occurs to the equipment based on twice dynamic temperature rise signals of the temperature sensing element, determination accuracy may be significantly enhanced; without actual occurrence of temperature anomaly, the heating element performs heating normally, which may guarantee operating effect of the equipment.

Abstract: A screw-cutting shear includes a shear base and a shear lever which are hinged with each other; a rotary cam is arranged on the shear base, a track groove is formed on a sidewall of the cam, and a first drive piece fitted with an outer sidewall of the cam and a second drive piece fitted with the track groove are provided on the shear lever. The shear lever has a shearing position and an expanded position. The cam pushes the first drive piece to move along the outer sidewall of the cam, driving the shear lever to shift from the expanded position to the shearing position. The cam pulls the second drive piece to move along an inner wall of the track groove, driving the shear lever to shift from the shearing position to the expanded position.

Abstract: A drain cleaning machine including a machine body with a drive assembly, rotary drum having a flexible shaft wound therein, and lead frame guiding the flexible shaft to advance and retract; the lead frame includes an inner base, outer cylinder, and locking structures; the lead frame includes an inner base, an outer cylinder, and locking structures; each locking structure includes a slider, a rotary member, and an elastic member; the outer cylinder is provided with abutting sections. The drain cleaning machine reasonably simplifies the structure of the lead frame by reasonably setting the specific structures of the lead frame and the locking structures, where the slider may drive the rotary member to move towards or away from the flexible shaft via forward/reverse rotation of the outer cylinder, which facilitates user operation.

Abstract: The present invention provides a layered lithium-rich manganese-based cathode material with olivine structured LiMPO4 surface modification and a preparation method thereof. The preparation method comprises: firstly, preparing a pure-phase layered lithium-rich manganese-based cathode material by using a coprecipitation method and a high temperature sintering method, and then uniformly coating and doping olivine-structured LiMPO4 to the surface of the layered lithium-manganese-rich composite cathode material by using a sol-gel method. According to the present invention, the surface of the layered lithium-rich manganese-based cathode material is modified by olivine structured LiMPO4, such that cycle stability thereof is effectively improved, and voltage drop generated by the material in the cycle course is inhibited. The preparation method according to the present invention is simple, low cost, environmentally friendly, and is suitable for large-scale industrial production.

Abstract: Disclosed are a lithium anode surface modification method for a lithium metal battery and a lithium metal battery. The modification method comprises the following steps: immersing, in a dry protective gas atmosphere, a lithium metal anode in a fluorine ion-containing liquid, or dropping a fluorine ion-containing liquid on a surface of the lithium metal anode; after fluorination and removal, a protective layer rich in lithium fluoride is formed on the surface of the lithium metal anode, and a lithium metal-coated lithium metal anode is obtained.

Abstract: The present invention provides a layered lithium-rich manganese-based cathode material with olivine structured LiMPO4 surface modification and a preparation method thereof. The preparation method comprises: firstly, preparing a pure-phase layered lithium-rich manganese-based cathode material by using a coprecipitation method and a high temperature sintering method, and then uniformly coating and doping olivine-structured LiMPO4 to the surface of the layered lithium-manganese-rich composite cathode material by using a sol-gel method. According to the present invention, the surface of the layered lithium-rich manganese-based cathode material is modified by olivine structured LiMPO4, such that cycle stability thereof is effectively improved, and voltage drop generated by the material in the cycle course is inhibited. The preparation method according to the present invention is simple, low cost, environmentally friendly, and is suitable for large-scale industrial production.

Abstract: The present invention provides a three-dimensional structured plant-fiber carbon material for use as an anode material for a sodium-ion battery and a lithium-ion battery, and a preparation method thereof. The preparation method of the three-dimensional structured plant-fiber carbon material comprises: soaking the plant fiber into a pore forming agent, a nitrate solution, wetting the fiber at a constant temperature, after drying, calcining and grinding the fiber at a protective atmosphere, washing the resulted material with hydrochloric acid and deionized water and drying the material. The three-dimensional structured plant-fiber carbon material has a three-dimensional porous thin sheet-like and long tunnel structure, wherein the thin sheet has a thickness of 5 to 30 nm.

Abstract: In one aspect, the present subject matter is directed to a composite anode for a hydrocarbon solid oxide fuel cell, the anode comprising a layered perovskite ceramic and a bi-metallic alloy.

Abstract: In accordance with the present disclosure, a method for fabricating a solid oxide fuel cell is described. The method includes forming an asymmetric porous ceramic tube by using a phase inversion process. The method further includes forming an asymmetric porous ceramic layer on a surface of the asymmetric porous ceramic tube by using a phase inversion process. The tube is co-sintered to form a structure having a first porous layer, a second porous layer, and a dense layer positioned therebetween.

Abstract: In one aspect, the present subject matter is directed to a composite anode for a hydrocarbon solid oxide fuel cell, the anode comprising a layered perovskite ceramic and a bi-metallic alloy.

Abstract: In accordance with the present disclosure, a method for fabricating a solid oxide fuel cell is described. The method includes forming an asymmetric porous ceramic tube by using a phase inversion process. The method further includes forming an asymmetric porous ceramic layer on a surface of the asymmetric porous ceramic tube by using a phase inversion process. The tube is co-sintered to form a structure having a first porous layer, a second porous layer, and a dense layer positioned therebetween.