Abstract: A refrigerator with a liner body and a beam, where the beam has an end portion, and the liner body has a liner wall. An insertion groove is on the liner wall, and the end portion is configured to be inserted into the insertion groove. A limit convex pin is on the end portion and a limit groove is on the liner wall and matched with a shape of the limit convex pin. The limit convex pin is configured to be inserted into the limit groove to limit rotation of the beam relative to the liner body. By matching the limit convex pin and the limit groove, the rotation of the beam relative to the liner wall is limited by the liner wall when the beam is under uneven forces, thereby reducing the flip probability of the beam of the refrigerator.

Abstract: A refrigerator with a liner body and a beam, where the beam has an end portion, and the liner body has a liner wall. An insertion groove is on the liner wall, and the end portion is configured to be inserted into the insertion groove. A limit convex pin is on the end portion and a limit groove is on the liner wall and matched with a shape of the limit convex pin. The limit convex pin is configured to be inserted into the limit groove to limit rotation of the beam relative to the liner body. By matching the limit convex pin and the limit groove, the rotation of the beam relative to the liner wall is limited by the liner wall when the beam is under uneven forces, thereby reducing the flip probability of the beam of the refrigerator.

Abstract: A hybrid photoelectrochemical and microbial fuel cell device is provided that includes a single-chamber photoelectrochemical device having an n-type TiO2 photoanode and a Pt counter electrode in an aqueous electrolyte solution, and a dual-chamber microbial fuel cell having an anode chamber and a cathode chamber separated by a cation exchange membrane, where the anode chamber includes a carbon anode and microorganisms and the cathode chamber includes Pt-loaded carbon cathode, the carbon anode is electrically connected to the Pt counter electrode, the carbon cathode is electrically connected to the TiO2 photoanode, a light source creates photoexcited electron-hole pairs at the photoanode, the holes oxidize water into oxygen, where dissolved oxygen in the cathode chamber is reduced, the microorganisms oxidize and produce bioelectrons, where the bioelectrons are transferred to the Pt electrode and reduce protons to form hydrogen gas.

Abstract: A method of electrode hydrogenation for photoelectrochemical (PEC) water oxidation is provided that includes annealing a PEC electrode in air, and annealing the PEC electrode in hydrogen to form a hydrogenated-PEC electrode, where PEC performance is improved by enhancing charge transfer and transport in the hydrogenated-PEC electrode.

Abstract: A hybrid photoelectrochemical and microbial fuel cell device is provided that includes a single-chamber photoelectrochemical device having an n-type TiO2 photoanode and a Pt counter electrode in an aqueous electrolyte solution, and a dual-chamber microbial fuel cell having an anode chamber and a cathode chamber separated by a cation exchange membrane, where the anode chamber includes a carbon anode and microorganisms and the cathode chamber includes Pt-loaded carbon cathode, the carbon anode is electrically connected to the Pt counter electrode, the carbon cathode is electrically connected to the TiO2 photoanode, a light source creates photoexcited electron-hole pairs at the photoanode, the holes oxidize water into oxygen, where dissolved oxygen in the cathode chamber is reduced, the microorganisms oxidize and produce bioelectrons, where the bioelectrons are trans ferred to the Pt electrode and reduce protons to form hydrogen gas.

Abstract: A method of electrode hydrogenation for photoelectrochemical (PEC) water oxidation is provided that includes annealing a PEC electrode in air, and annealing the PEC electrode in hydrogen to form a hydrogenated-PEC electrode, where PEC performance is improved by enhancing charge transfer and transport in the hydrogenated-PEC electrode.