Abstract: A method for recycling anode and/or cathode catalyst from the catalyst coated membranes comprising proton exchange membrane, a continuous nonporous cross-linked polyelectrolyte multilayer coating comprising alternating layers of a polycation polymer and a polyanion polymer, an anode coating layer comprising anode catalyst particles, a cathode coating layer comprising cathode catalyst particles, and optionally a second continuous nonporous cross-linked polyelectrolyte multilayer coating between the second surface of the proton exchange membrane and the cathode coating layer. The cross-linked polyelectrolyte multilayer coating between the proton exchange membrane and the anode and/or cathode catalyst coating layer is dissolved in an aqueous solution with a pH of greater than 7. The catalyst coated membrane is delaminated, and the anode and/or cathode catalyst is recovered.

Abstract: Composite proton exchange membranes are described. The composite proton-exchange membranes comprise three layers including a proton exchange membrane layer, a continuous nonporous organic-inorganic composite coating layer, and a continuous nonporous cross-linked polyelectrolyte multilayer coating. Catalyst coated membranes incorporating the composite proton exchange membranes and methods of making the composite proton exchange membranes are also described.

Abstract: Proton exchange membranes are described. The proton exchange membranes comprise a reinforced membrane, a continuous nonporous hydrogen recombination catalyst coating layer comprising a mixture of hydrogen recombination catalyst and a proton conducting ionomer, and a continuous nonporous cross-linked polyelectrolyte multilayer coating comprising alternating layers of a polycation polymer and a polyanion polymer. Catalyst coated membranes incorporating the proton exchange membranes and methods of making the proton exchange membranes are also described.

Abstract: A new multilayer ion-exchange membrane comprising an ion-exchange membrane layer, a catalyst layer coated on a first surface of the ion exchange membrane, a first polyelectrolyte multilayer coated on the catalyst layer, and optionally a second polyelectrolyte multilayer coated on a second surface of the ion-exchange membrane for electrolysis applications has been developed.

Abstract: This application discloses a network communication method applied to a network communication system including a first network device in a first private network, a second network device in a second private network and a gateway device coupling the first private network to the second private network. The first network device receives a first data packet transmitted from a terminal to a target blockchain node, and acquires an actual network address of the target blockchain node; and generates a second data packet according to the first data packet and the actual network address, and transmits the second data packet to a virtual network address of the second network device in the second private network, so that the operation overheads generated when the gateway device generates virtual network addresses for blockchain nodes can be reduced, thereby saving a storage space of the gateway device.

Abstract: The present disclosure discloses a credit messaging system, a credit data storage method, a device, and a medium, and belongs to the field of network technologies. A server generates a unified user identifier based on user information of a user, generates, based on behavioral data of the user, credit data of the user through calculation by using a unified algorithm, and then, stores the credit data of the user and a corresponding user identifier into a block chain by using a target policy. In a block chain system, a unified user identifier is obtained for a same user, so that organizations in the block chain system may query credit data of the user according to the unified user identifier, thereby implementing high-quality data circulation and transactions while improving accuracy and comprehensiveness of queries for the credit data.

Abstract: This application discloses a network communication method applied to a network communication system including a first network device in a first private network, a second network device in a second private network and a gateway device coupling the first private network to the second private network. The first network device receives a first data packet transmitted from a terminal to a target blockchain node, and acquires an actual network address of the target blockchain node; and generates a second data packet according to the first data packet and the actual network address, and transmits the second data packet to a virtual network address of the second network device in the second private network, so that the operation overheads generated when the gateway device generates virtual network addresses for blockchain nodes can be reduced, thereby saving a storage space of the gateway device.

Abstract: The present disclosure discloses a credit messaging system, a credit data storage method, a device, and a medium, and belongs to the field of network technologies. A server generates a unified user identifier based on user information of a user, generates, based on behavioral data of the user, credit data of the user through calculation by using a unified algorithm, and then, stores the credit data of the user and a corresponding user identifier into a block chain by using a target policy. In a block chain system, a unified user identifier is obtained for a same user, so that organizations in the block chain system may query credit data of the user according to the unified user identifier, thereby implementing high-quality data circulation and transactions while improving accuracy and comprehensiveness of queries for the credit data.

Abstract: A method for supporting media data of various coding formats includes converting the received media files of different coding formats into media files of a particular file format where the media files of a particular file format include media data information and index information, determining the corresponding media file according to an operational command from a client, and sending the media data information in the corresponding media file to the client according to the index information in the corresponding media file. The present disclosure may solve a problem in the conventional art that media files of different coding formats have to be stored on different streaming servers which increases the cost of the system and the integration difficulty of the system and cannot realize load balance among the different streaming servers.