Abstract: The present disclosure provides a foldable wireless charging stand, including at least two wireless charging modules electrically connected to each other through a wire. An articulation assembly includes an articulation sleeve and an articulation shaft rotatably; a mounting notch is defined on a peripheral edge of one of two adjacent wireless charging modules, and a peripheral sidewall of the articulation sleeve is fixedly connected to the other wireless charging module. The articulation sleeve defines a first opening, a second opening, and a wire passage hole; the articulation shaft has a rotation portion and a mounting lug protruding from an outer surface of the rotation portion; the rotation portion is rotatably embedded in the articulation sleeve through the second opening; the mounting lug is exposed to the second opening and fixedly connected to the wireless charging module; the wire passes through the first opening and the wire passage hole.

Abstract: The present disclosure provides a foldable wireless charging stand, including at least two wireless charging modules electrically connected to each other through a wire. An articulation assembly includes an articulation sleeve and an articulation shaft rotatably; a mounting notch is defined on a peripheral edge of one of two adjacent wireless charging modules, and a peripheral sidewall of the articulation sleeve is fixedly connected to the other wireless charging module. The articulation sleeve defines a first opening, a second opening, and a wire passage hole; the articulation shaft has a rotation portion and a mounting lug protruding from an outer surface of the rotation portion; the rotation portion is rotatably embedded in the articulation sleeve through the second opening; the mounting lug is exposed to the second opening and fixedly connected to the wireless charging module; the wire passes through the first opening and the wire passage hole.

Abstract: A preparation method of a tetragonal NaV2O5.H2O nanosheet-like powder includes steps of: (Step 1) simultaneously adding NaVO3 and Na2S.9H2O into deionized water, and then magnetically stirring, and obtaining a black turbid solution; (Step 2) sealing after putting the black turbid solution into an inner lining of a reaction kettle, fixing the sealed inner lining in an outer lining of the reaction kettle, placing the reaction kettle into a homogeneous reactor, and then performing a hydrothermal reaction; and (Step 3) after completing the hydrothermal reaction, naturally cooling the reaction kettle to the room temperature, and then alternately cleaning through water and alcohol, and then collecting a product, drying the product, and finally obtaining the tetragonal NaV2O5.H2O nanosheet-like powder with a thickness in a range of 30-60 nm and a single crystal structure grown along a (002) crystal orientation.

Abstract: A preparation method of a tetragonal NaV2O5.H2O nanosheet-like powder includes steps of: (Step 1) simultaneously adding NaVO3 and Na2S.9H2O into deionized water, and then magnetically stirring, and obtaining a black turbid solution; (Step 2) sealing after putting the black turbid solution into an inner lining of a reaction kettle, fixing the sealed inner lining in an outer lining of the reaction kettle, placing the reaction kettle into a homogeneous reactor, and then performing a hydrothermal reaction; and (Step 3) after completing the hydrothermal reaction, naturally cooling the reaction kettle to the room temperature, and then alternately cleaning through water and alcohol, and then collecting a product, drying the product, and finally obtaining the tetragonal NaV2O5.H2O nanosheet-like powder with a thickness in a range of 30-60 nm and a single crystal structure grown along a (002) crystal orientation.

Abstract: A preparation method of a tetragonal NaV2O5.H2O nanosheet-like powder includes steps of: (S1) simultaneously adding NaVO3 and Na2S.9H2O into deionized water, and then magnetically stirring, and obtaining a black turbid solution; (S2) sealing after putting the black turbid solution into an inner lining of a reaction kettle, fixing the sealed inner lining in an outer lining of the reaction kettle, placing the reaction kettle into a homogeneous reactor, and then performing a hydrothermal reaction; and (S3) after completing the hydrothermal reaction, naturally cooling the reaction kettle to the room temperature, and then alternately cleaning through water and alcohol, and then collecting a product, drying the product, and finally obtaining the tetragonal NaV2O5.H2O nanosheet-like powder with a thickness in a range of 30-60 nm and a single crystal structure grown along a (002) crystal orientation.

Abstract: The invention provides a support, comprising a telescopic rod; a support front shell; a support back shell, forming an accommodating space with the support front shell; and a clamping mechanism arranged between the two shells, wherein the clamping mechanism comprises a telescopic rod, a left clamping arm and a right clamping arm arranged on both sides of the support, configured to clamp objects from left and right, the two clamping arms are hinged with the support front or back shell; a linkage mechanism for driving the two clamping arms to automatically clamp is formed when the telescopic rod moves downward; and at least one elastic resetting component, arranged in the accommodating space, configured to restore the fixing rod, the left and right clamping arms to initial states thereof. The invention clamps automatically by the gravity of weight, and adjusts the telescopic rod according to the size of equipment.

Abstract: A preparation method of a tetragonal NaV2O5.H2O nanosheet-like powder includes steps of: (S1) simultaneously adding NaVO3 and Na2S.9H2O into deionized water, and then magnetically stirring, and obtaining a black turbid solution; (S2) sealing after putting the black turbid solution into an inner lining of a reaction kettle, fixing the sealed inner lining in an outer lining of the reaction kettle, placing the reaction kettle into a homogeneous reactor, and then performing a hydrothermal reaction; and (S3) after completing the hydrothermal reaction, naturally cooling the reaction kettle to the room temperature, and then alternately cleaning through water and alcohol, and then collecting a product, drying the product, and finally obtaining the tetragonal NaV2O5.H2O nanosheet-like powder with a thickness in a range of 30-60 nm and a single crystal structure grown along a (002) crystal orientation.