Abstract: A platinum-palladium alloy catalyst, and a phosphoric acid or a phosphonated ionomer contacting the platinum-palladium alloy catalyst in a fuel cell. Phosphoric acid fuel cells (PAFCs, with phosphoric-acid-saturated silicon carbide matrix) employing the platinum-palladium alloy catalyst, and, a phosphoric acid or a phosphonated ionomer contacting the platinum-palladium alloy catalyst are disclosed. High-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs, with phosphoric-acid-contained polymer matrix) employing the platinum-palladium alloy catalyst, and a phosphoric acid or a phosphonated ionomer contacting the platinum-palladium alloy catalyst are also disclosed.

Abstract: An oxygen evolution reduction electrocatalyst includes a pyrochlore compound with the chemical formula Sm2Ru2xM2-2xO7, where M is selected from the group consisting of Ir, Sc, Fe, Cu, Pd, Cr, and Rh, and x is less than 1.0 and greater than or equal to 0.5. Also, a water electrolysis cell includes an anode, a cathode, an electrolyte, and the oxygen evolution reduction electrocatalyst.

Abstract: A system for determining a future state-of-health (SOH) of a battery includes a memory communicably coupled to a processor and storing instructions that, when executed by the processor, cause the processor to acquire battery data of a battery for which a future SOH is to be predicted. The instructions also cause the processor to identify a selected model from an ensemble of models according to at least a time to the future SOH and a time length of the battery data. The instructions further cause the processor to predict the future SOH using the battery data as an input to the selected model.

Abstract: A cathode catalyst for a nanoparticle catalyst and method of making the same may include creating a nanoparticle. The nanoparticle catalyst may include a shell, wherein the shell may include platinum (Pt). The nanoparticle catalyst may include a core within the shell, wherein the core may include a platinum alloy (Pt-M), where M is a transition metal.

Abstract: An electrocatalyst for the production of hydrogen from water includes a pyrochlore compound with a composition or chemical formula of RE2(Ru)2xM2-2xO7, RE2(Ir)2xM2-2xO7or RE2(Ir,Ru)2xM2-2xO7, where RE is a rare earth element, M is an alkali metal, alkaline carth metal, transition metal, post-transition metal, Ge, or Sb, and x is less than 1.0 and greater than 0.0.

Abstract: Certain embodiments of the invention provide cell penetrating peptides. Certain embodiments of the invention provide methods and compositions for intracellular delivery. Certain embodiments of the invention provide methods and compositions for targeted delivery.

Abstract: A cleaning brush includes a brush handle, a brush head connected to the brush handle, and a plurality of bristles attached to the surface of the brush head, the cross section of the bristles in at least some areas on the surface of the brush head is polygonal; a cleaning brush kit includes the cleaning brush and a storage box corresponding to the cleaning brush; a side wall of the storage box is provided with an adsorption member, and the adsorption member enables the storage box to be attached to a smooth and hard surface.

Abstract: A brush head mounting structure of a liquid spraying brush, includes a connecting base provided at the end of a handle and a mounting base provided on a brush head; the other side of the connecting base with respect to the handle is provided with a slider, one side of the mounting base adjacent to the connecting base is provided with a sliding groove in sliding fit with the slider, a limiting structure is provided between the connecting base and the mounting base, the limiting structure is capable of limiting the connecting base and the mounting base along the sliding direction perpendicular to the slider, both sides of the mounting base corresponding to the sliding groove are provided with elastic arms, the position of the mounting base corresponding to the elastic arm is provided with an avoidance space for the elastic arm to expand outwards.

Abstract: A box cover for a portable airtight box, comprising an upper cover, a lower cover, a sliding plate, a reset spring, a pinching member, a lower cover plate, and a sealing ring, wherein the upper cover is fixedly connected to the lower cover, an accommodating space is formed between the upper cover and the lower cover, and the sliding plate is movably arranged within the accommodating space, wherein the reset spring is disposed between the sliding plate and the lower cover, wherein the sliding plate is capable of moving upward relative to the lower cover, wherein the pinching member is movably arranged on the upper cover, and the pinching member abuts against the sliding plate, wherein the lower cover plate is movably arranged at outer bottom of the lower cover, and the lower cover plate is fixedly connected with the sliding plate.

Abstract: A box cover for a portable airtight box, comprising an upper cover, a lower cover, a sliding plate, a reset spring, a pinching member, a lower cover plate, and a sealing ring, wherein the upper cover is fixedly connected to the lower cover, an accommodating space is formed between the upper cover and the lower cover, and the sliding plate is movably arranged within the accommodating space, wherein the reset spring is disposed between the sliding plate and the lower cover, wherein the sliding plate is capable of moving upward relative to the lower cover, wherein the pinching member is movably arranged on the upper cover, and the pinching member abuts against the sliding plate, wherein the lower cover plate is movably arranged at outer bottom of the lower cover, and the lower cover plate is fixedly connected with the sliding plate.