Abstract: Nanomaterials and methods of preparation and use thereof, are disclosed. The nanomaterials include a non-noble metal substrate and noble metal atoms on a surface of the non-noble metal substrate. The noble metal atoms simultaneously coordinate with a halogen and oxygen. The substrate has a large specific surface area and a large electrochemical active area, and the surface coordination environment of the noble metal affects the electronic structure and catalytic activity of a resulting catalyst. The noble metal surface coordination structure may be regulated and controlled by a synthesis temperature, an alkalinity, a reaction time, and an electrodeposition voltage range. A hydroxide ion and the halogen coordinate with the noble metal, exhibiting an unsaturated pentacoordinate state. Doping the substrate with reducing metal ions may increase the loading capacity, anchor the noble metal atoms, and improve anodic oxygen evolution and cathodic hydrogen evolution in seawater electrolysis.

Abstract: A method of forming a cathode for hydrogen evolution reaction includes: (1) providing a substrate; (2) forming a precursor layer covering the substrate; and (3) annealing the precursor layer to form an electrocatalyst layer covering the substrate.

Abstract: A hybrid inductive device includes a magnetic core and a plurality of coil windings. The magnetic core has a plurality of winding areas. The plurality of coil windings are respectively wound in the plurality of winding areas. A gap is between the coil windings in two adjacent winding areas. A winding direction of the coil winding in each of the plurality of winding areas on the magnetic core is different from winding directions of the coil windings in the adjacent winding areas on the magnetic core. The coil winding in each of the plurality of winding areas is symmetrical to the coil windings in the adjacent winding areas.

Abstract: The present disclosure provides a brushhead for an power toothbrush detachably attached to a handle of the power toothbrush, the handle including a vibrating drive shaft, the brushhead comprising: a main body defining a receiving cavity which is configured to receive at least a portion of the vibrating driving shaft, the main body including a cavity wall substantially surrounding the receiving cavity and an end connected to the handle, with an opening which is defined in the end of the main body in air communication with the receiving cavity, so that the vibrating driving shaft is capable of being inserted into the receiving cavity through the opening; and an engaging assembly mounted in a side wall of the main body, the engaging assembly comprising an elastic member, which is made by metal material; wherein, a recess is defined in the outer surface of the side wall, the elastic member is deformably received in the recess, the elastic member is elastically deformed by force provided from the vibrating drive s

Abstract: The present disclosure provides a brushhead for a power toothbrush detachably, and the power toothbrush. The brushhead configured for a power toothbrush, the brushhead being detachably installed on a handle of the power toothbrush, the brushhead comprising: a brushhead element and an engaging assembly arranged in the brushhead element, wherein the engaging assembly receives a driving shaft therein within and is configured to be driven by the driving shaft to vibrate, and wherein the engaging assembly comprises a main body and an elastic member, the elastic member is a stand-alone element arranged on the main body, and the elastic member abuts against the driving shaft.

Abstract: The present disclosure provides a brushhead for a power toothbrush, and the power toothbrush. The brushhead configured for an electric toothbrush, the brushhead being detachably installed on a handle of the electric toothbrush, the brushhead comprising: a brushhead element; and an engaging assembly arranged in the brushhead element and connecting the brushhead element with a driving shaft, wherein the engaging assembly comprises a main body, an accommodating cavity is defined in a first end of the main body along a first direction, the accommodating cavity is configured to accommodate the driving shaft, a material of the brushhead element is different from a material of the main body, and the first direction is a direction from an end of the brushhead element connected with the handle toward an end of the brushhead element away from the handle.

Abstract: The present disclosure provides a brushhead for an power toothbrush detachably attached to a handle of the power toothbrush, the handle including a vibrating drive shaft, the brushhead comprising: a main body defining a receiving cavity which is configured to receive at least a portion of the vibrating driving shaft, the main body including a cavity wall substantially surrounding the receiving cavity and an end connected to the handle, with an opening which is defined in the end of the main body in air communication with the receiving cavity, so that the vibrating driving shaft is capable of being inserted into the receiving cavity through the opening; and an engaging assembly mounted in a side wall of the main body, the engaging assembly comprising an elastic member, which is made by metal material; wherein, a recess is defined in the outer surface of the side wall, the elastic member is deformably received in the recess, the elastic member is elastically deformed by force provided from the vibrating drive s

Abstract: A hybrid inductive device includes a magnetic core and a plurality of coil windings. The magnetic core has a plurality of winding areas. The plurality of coil windings are respectively wound in the plurality of winding areas. A gap is between the coil windings in two adjacent winding areas. A winding direction of the coil winding in each of the plurality of winding areas on the magnetic core is different from winding directions of the coil windings in the adjacent winding areas on the magnetic core. The coil winding in each of the plurality of winding areas is symmetrical to the coil windings in the adjacent winding areas.

Abstract: A corrosion resistant anode is provided for oxygen evolution reaction in water including chloride ions. The anode includes: (1) a substrate; (2) a passivation layer coating the substrate; and (3) an electrocatalyst layer coating the passivation layer. Polyanion adjusted alkaline seawater electrolyte for hydrogen generation by electrolysis is also provided.

Abstract: The present disclosure provides a brushhead for a power toothbrush, and the power toothbrush. The brushhead configured for an electric toothbrush, the brushhead being detachably installed on a handle of the electric toothbrush, the brushhead comprising: a brushhead element; and an engaging assembly arranged in the brushhead element and connecting the brushhead element with a driving shaft, wherein the engaging assembly comprises a main body, an accommodating cavity is defined in a first end of the main body along a first direction, the accommodating cavity is configured to accommodate the driving shaft, a material of the brushhead element is different from a material of the main body, and the first direction is a direction from an end of the brushhead element connected with the handle toward an end of the brushhead element away from the handle.

Abstract: The present disclosure provides a brushhead for an power toothbrush detachably attached to a handle of the power toothbrush, the handle including a vibrating drive shaft, the brushhead comprising: a main body defining a receiving cavity which is configured to receive at least a portion of the vibrating driving shaft, the main body including a cavity wall substantially surrounding the receiving cavity and an end connected to the handle, with an opening which is defined in the end of the main body in air communication with the receiving cavity, so that the vibrating driving shaft is capable of being inserted into the receiving cavity through the opening; and an engaging assembly mounted in a side wall of the main body, the engaging assembly comprising an elastic member, which is made by metal material; wherein, a recess is defined in the outer surface of the side wall, the elastic member is deformably received in the recess, the elastic member is elastically deformed by force provided from the vibrating drive s

Abstract: The present disclosure provides a brushhead for a power toothbrush detachably, and the power toothbrush. The brushhead configured for a power toothbrush, the brushhead being detachably installed on a handle of the power toothbrush, the brushhead comprising: a brushhead element and an engaging assembly arranged in the brushhead element, wherein the engaging assembly receives a driving shaft therein within and is configured to be driven by the driving shaft to vibrate, and wherein the engaging assembly comprises a main body and an elastic member, the elastic member is a stand-alone element arranged on the main body, and the elastic member abuts against the driving shaft.

Abstract: The present disclosure provides a brushhead for an power toothbrush detachably attached to a handle of the power toothbrush, the handle including a vibrating drive shaft, the brushhead comprising: a main body defining a receiving cavity which is configured to receive at least a portion of the vibrating driving shaft, the main body including a cavity wall substantially surrounding the receiving cavity and an end connected to the handle, with an opening which is defined in the end of the main body in air communication with the receiving cavity, so that the vibrating driving shaft is capable of being inserted into the receiving cavity through the opening; and an engaging assembly mounted in a side wall of the main body, the engaging assembly comprising an elastic member, which is made by metal material; wherein, a recess is defined in the outer surface of the side wall, the elastic member is deformably received in the recess, the elastic member is elastically deformed by force provided from the vibrating drive s

Abstract: The present disclosure provides a brush head of an electric toothbrush, which is detachably attached to a handle of the electric toothbrush, and the handle includes a drive shaft. The brush head includes a brush head main body, and the brush head main body has a receiving cavity along a first direction. The receiving cavity accommodates at least a part of the drive shaft. The brush head main body includes a cavity wall forming the receiving cavity and an abutment wall. The cavity wall and the abutment wall are integrally formed. When the electric toothbrush brush head is in an assembled state, the abutment wall abuts against the drive shaft under an external force. The brush head includes an elastic member. The elastic member is arranged at a position corresponding to the abutment wall.

Abstract: A corrosion resistant anode is provided for oxygen evolution reaction in water including chloride ions. The anode includes: (1) a substrate; (2) a passivation layer coating the substrate; and (3) an electrocatalyst layer coating the passivation layer. Polyanion adjusted alkaline seawater electrolyte for hydrogen generation by electrolysis is also provided.

Abstract: A method of forming a cathode for hydrogen evolution reaction includes: (1) providing a substrate; (2) forming a precursor layer covering the substrate; and (3) annealing the precursor layer to form an electrocatalyst layer covering the substrate.

Abstract: A buried inductive element structure includes a base having a chamber, two stands and two terminals, wherein the chamber having a holding space is formed on the base, each stand is arranged on a corner of the base, the two terminals are respectively mounted inside the two stands, a bending part is formed on a top of each of the two terminals and is exposed to the base and each stand, a hook part is formed on the bottom of each of the two terminals, a part of the hook part is arranged inside the base, another part of the hook part is exposed to the base and is defined as a connecting part. The coil has two ends connected electrically and respectively to the bending part of the terminals. The electronic component is connected electrically to the connecting parts of the two terminals.

Abstract: A buried inductive element structure includes a base having a chamber, two stands and two terminals, wherein the chamber having a holding space is formed on the base, each stand is arranged on a corner of the base, the two terminals are respectively mounted inside the two stands, a bending part is formed on a top of each of the two terminals and is exposed to the base and each stand, a hook part is formed on the bottom of each of the two terminals, a part of the hook part is arranged inside the base, another part of the hook part is exposed to the base and is defined as a connecting part. The coil has two ends connected electrically and respectively to the bending part of the terminals. The electronic component is connected electrically to the connecting parts of the two terminals.

Abstract: An adjusting device for adjusting orientation of an energy conversion board comprises a first frame member, a second frame member, a third frame member and a base. The first frame member contains the energy conversion board. The second frame member holds the first frame member. The third frame member holds the second frame member. The base supports the third frame including the other frames and the energy conversion board. The first frame member is rotatable relative to the second frame member, the second frame member is rotatable relative to the third frame, and the third frame member is rotatable relative to the base. The first rotating axis is perpendicular to the second rotating axis, and the third rotating axis is coaxial with the first rotating axis.

Abstract: A buried inductive element structure includes a base substrate having a flat upper surface defining a reception space, a coil disposed securely with the space, and an electronic component disposed in the reception space at one side of the coil. The substrate further includes two terminals having two lower barbed sections consisting of buried parts buried within the upper surface and connecting parts exposed from the upper surface and two upper curved sections exposed to an exterior of the substrate. The coil has two ends connected electrically and respectively to the upper curved sections of the terminals. The electronic component is connected electrically to the connecting parts of the two terminals. The substrate further includes a pair of pedestals upon which the two terminals are mounted respectively such that the pedestals are disposed on the upper surface of the substrate at two opposite sides of the coil.