Abstract: A water decomposition device may include a hydrogen-generating electrode including a first external electrode and at least one first internal electrode formed integrally with the first external electrode, and an oxygen-generating electrode including a second external electrode and at least one second internal electrode formed integrally with the second external electrode. The first external electrode and the second external electrode are disposed to face each other, and the first internal electrode and the second internal electrode are disposed alternately in a direction perpendicular to the longitudinal direction thereof. Therefore, the water decomposition device may secure both transparency and durability even when an opaque material is used therefor.

Abstract: A water decomposition device may include a hydrogen-generating electrode including a first external electrode and at least one first internal electrode formed integrally with the first external electrode, and an oxygen-generating electrode including a second external electrode and at least one second internal electrode formed integrally with the second external electrode. The first external electrode and the second external electrode are disposed to face each other, and the first internal electrode and the second internal electrode are disposed alternately in a direction perpendicular to the longitudinal direction thereof. Therefore, the water decomposition device may secure both transparency and durability even when an opaque material is used therefor.

Abstract: Disclosed is a method of manufacturing an electrocatalyst. The method may include forming a metal layer on a substrate, treating a substrate of the metal layer, and forming a catalyst layer on the metal layer by applying potential to an aqueous deposition solution including a nickel precursor, a copper precursor, a phosphorus precursor, and an additive, in which a molar ratio of the nickel precursor to the copper precursor may be greater than about 49:1. Accordingly, the present invention has an advantage in that the process of manufacturing the electrocatalyst may be simplified.

Abstract: A heating and cooling apparatus for a vehicle seat, may include a blower blowing air into a duct leading to the vehicle seat, and a thermoelectric element assembly connected to the duct and including a thermoelectric element that heats or cools air introduced toward the vehicle seat from the duct, the thermoelectric element having condensed water passages penetrating from one side to the other side thereof to allow condensed water to flow therethrough.

Abstract: A vehicle seat for cooling and heating may include a seat pad, a mesh sheet having a certain thickness, a first film, and a porous seat cover, which are arranged sequentially in the direction in which air is introduced to flow. The seat pad has a pad hole, which allows air to pass through, and includes one or both of a seat cushion pad, which supports the buttocks of a user, and a seatback pad, which supports the upper body of the user. The mesh sheet has a porous network structure, through which air easily passes. The first film has a first film hole, which allows air to pass through. Air passages are maintained stable to maximize blowing performance, seating comfort is improved, and a ventilation structure is simplified to reduce manufacturing costs while improving productivity.

Abstract: An air-conditioning ventilation seat module for vehicles, may include a blower unit having a housing, a thermoelectric module having a casing mounted in the housing, wherein a thermoelectric device may be mounted in the casing, and wherein an internal space of the casing may be divided into a cold air path and a hot air path, a separator connected to one side of the thermoelectric module between the cold air path and the hot air path and having a curved section in order to maximize an amount of absorbing a condensate that may be created by a temperature difference between the cold air path and the hot air path when the seat module operates in cooling mode.

Abstract: A vehicle seat for cooling and heating may include a seat pad, a mesh sheet having a certain thickness, a first film, and a porous seat cover, which are arranged sequentially in the direction in which air is introduced to flow. The seat pad has a pad hole, which allows air to pass through, and includes one or both of a seat cushion pad, which supports the buttocks of a user, and a seatback pad, which supports the upper body of the user. The mesh sheet has a porous network structure, through which air easily passes. The first film has a first film hole, which allows air to pass through. Air passages are maintained stable to maximize blowing performance, seating comfort is improved, and a ventilation structure is simplified to reduce manufacturing costs while improving productivity.

Abstract: A heating and cooling system for a vehicle seat, may include a heat exchanger cooling or heating air before the air is introduced into the seat, and a blower blowing air toward the heat exchanger, wherein the heat exchanger includes a positive temperature coefficient element assembly provided inside a housing of the heat exchanger to heat the air supplied from the blower, and wherein the positive temperature coefficient element assembly operates in a case of heating the seat but does not operate in a case of cooling the seat.

Abstract: A heating and cooling system for a vehicle seat, may include a housing having an air supply port through which air communicates with the vehicle seat and an air exhaust hole through which air communicates with the outside of the housing, a thermoelectric element located in the housing between the air supply port and the air exhaust hole to selectively heat or cool air, which is directed toward the air supply port or the air exhaust hole, and a first blower fan provided in the air supply port to communicate air between the vehicle seat and the thermoelectric element.

Abstract: A heating and cooling apparatus for a vehicle seat, may include a blower blowing air into a duct leading to the vehicle seat, and a thermoelectric element assembly connected to the duct and including a thermoelectric element that heats or cools air introduced toward the vehicle seat from the duct, the thermoelectric element having condensed water passages penetrating from one side to the other side thereof to allow condensed water to flow therethrough.

Abstract: A heat exchanger may include a housing including an intake port through which air is introduced into the housing from outside, a seat inlet supplying air to a vehicle seat, and an exhaust port through which a portion of the air introduced from outside is exhausted from the housing to outside, a blower unit mounted inside the housing and operated by a first motor to supply the air introduced into the housing through the intake port, out of the housing through the seat inlet, and a thermoelectric element disposed between the intake port and the seat inlet and heat-controlling the air introduced into the housing through the intake port.