摘要:
A method of manufacturing a proton conductive solid oxide fuel cell, the method including: forming a metallic mask layer having nanoholes on a first surface of a substrate; selectively etching the first surface of the substrate using the metallic mask layer; depositing a first membrane electrode assembly (MEA) member on the etched first surface of the substrate; etching an opposing second surface of the substrate; and forming second and third MEA members on the first MEA member.
摘要:
A proton conducting electrolyte membrane comprising a ceramic electrolyte layer including an inorganic proton conductor and a ceramic protective layer formed on at least one surface of the ceramic electrolyte layer and having proton conductivity; a membrane electrode assembly including the proton conducting electrolyte membrane; and a proton conducting ceramic fuel cell including the membrane electrode assembly. In the proton conducting electrolyte membrane, the ceramic protective layer may have an improved chemical bond with the ceramic electrolyte layer compared with a Pd metal protective layer, such that interlayer delamination may be lessened. Also, compared with a Pd metal protective layer, the ceramic protective layer is more appropriate for ceramic electrolytes such as BYZ and BYC that transmit protons or simultaneously transmit protons and oxygen ions used in a fuel cell operating at a temperature range of about 200 to about 500° C., for example, about 250 to about 500° C.
摘要:
Disclosed herein are method and system for providing mobile telephone call termination service over open sea. The system includes a ticketing system which applies to a mobile communication service provider of a customer's mobile telephone for a call termination service; a call termination service provision system which transmits a call termination signal when a call connection to the mobile telephone number is requested, according to the call termination service application, and establishes a call connection; and an internal switching system which is mounted in the airplane or the ship, receives the call termination signal from the call termination service provision server, searches for the customer corresponding to the telephone number, notifies the customer that the call termination signal is received, and transmits/receives voice data to/from the call termination service provision system according to a call connection request of the customer.