196results about "Fuel cells disposal/recycling" patented technology

A disassembly procedure of a fuel cell 10 first provides a cracking tool 12 having a sloped edge and places the sloped edge of the cracking tool 12 on a bottom of a recess 11. The disassembly procedure subsequently sets the bottom of the recess 11 where the sloped edge of the cracking tool 12 is placed, as a point of application, an opening edge of the recess 11 where a flat side of the cracking tool 12 is placed, as a point of support, and a base end of the cracking tool 12 where a force is applied, as a point of power, and applies an external force to the point of application by the principle of leverage. A crack starts from the point of application in a separator 6. The crack goes from the point of application toward a position outside electrodes 4 and 5 of an MEA (membrane electrode assembly) 2 but inside sealing members 8. The procedure then removes the broken separator 6 to expose the MEA 2 outside and cuts off an electrolyte membrane 3 along a cut line CL outside the electrodes 4 and 5 but inside the sealing members 8.

[Object] To provide an electrochemical reactor that is small in size but high in throughput capacity, does not generate NOx or carbon dioxide, can be operated at a low running cost, is easy to handle during assembling, and has a simple structure and high durability, a method for manufacturing the reactor, a gas decomposing element, an ammonia decomposing element, and a power generator.[Solution] An electrochemical reactor 10 includes a porous anode 2, a porous cathode 5 that is paired with the anode, and an ion conductive material 1 having an ion conductivity and being interposed between the anode and the cathode. The anode 2 includes surface-oxidized metal particle chains 21.

The invention provides a method for recycling failed vanadium electrolyte. The method includes steps of confirming vanadium ion concentration C1, averaged valence state M1 of vanadium ion and sulfate radical concentration Cs1 in the failed vanadium electrolyte; according to the volume ratio of the failed vanadium electrolyte, determining the quantity n1 of the vanadyl sulfate or vanadium sulphate as required; according to the vanadium ion concentration C2 and sulfate radical concentration Cs2 required by the regenerated vanadium electrolyte, confirming the volume V2 of the regenerated vanadium electrolyte and the quantity n2 of the vitriolic material as required; and then adding water and adjusting the volume of the obtained solution to V2, and thereby obtaining the regenerated vanadium electrolyte. Through recycling the recycled vanadium electrolyte, the electrolyte is regenerated; the recycle rate is up to 10%; moreover, the method is simple in process and easy to operate.

The present invention is directed to a fuel cell system with various features for optimal operations of an electronic device. The fuel cell system includes a fuel cartridge with a fuel reservoir containing fuel and a membrane electrode assembly (MEA) or a stack. The fuel cartridge is selectively operatively associated with the electronic device to power the device. In one embodiment, the fuel cartridge may be received within a chamber in the electronic device. In another embodiment, the fuel cartridge may be operatively associated with the electronic device while external thereto.

The invention discloses an exhaust gas recycling device of a fuel cell, and belongs to the field of fuel cells. The exhaust gas recycling device comprises a hydrogen storage tank, a galvanic pile, a heat exchanger, a heat conversion device, a gas-water separator, a drying tower and a compressor, wherein hydrogen in the hydrogen storage tank is introduced into the galvanic pile for electrochemical reaction to generate electric energy, and the remaining hydrogen exhaust gas enters the heat exchanger for heat recovery, sequentially passes through the gas-water separator, the drying tower and the compressor and finally enters the hydrogen storage tank; air is introduced into the galvanic pile for electrochemical reaction to generate electric energy, and the remaining air exhaust gas enters the heat conversion device and provides the heat conversion device with heat; and a high-temperature medium generated by the heat conversion device enters the drying tower to provide heat for absorbent regeneration and returns to the heat conversion device again after heat supply. By the exhaust gas recycling device of the fuel cell disclosed by the invention, the residual fuel and heat in the exhaust gas of the fuel cell are fully recycled, so that improvement of the fuel utilization rate of the fuel cell is facilitated; energy is saved; the power generation efficiency is improved; and the cost is reduced.

The objective of the present invention is to selectively extract light rare earth metals, and by extension, europium, from an acidic solution containing a plurality of types of rare earth metal. This valuable metal extraction agent is represented by the general formula. In the formula: R1 and R2 each indicate the same or different alkyl group; R3 indicates a hydrogen atom or an alkyl group; and R4 indicates a hydrogen atom or any given group other than an amino group bonded to the α carbon as an amino acid. Preferably, the general formula has a glycine unit, a histidine unit, a lysine unit, an aspartic acid unit, or an N-methylglycine unit. Preferably, when extracting europium using the extraction agent, the pH is adjusted into the range of 2.0-3.0 inclusive, and when selectively extracting light rare earth metals, the pH is adjusted to 1.7-2.7 inclusive.

A method is provided for recovering a catalytic element from a fuel cell membrane electrode assembly. The method includes grinding the membrane electrode assembly into a powder, extracting the catalytic element by forming a slurry comprising the powder and an acid leachate adapted to dissolve the catalytic element into a soluble salt, and separating the slurry into a depleted powder and a supernatant containing the catalytic element salt. The depleted powder is washed to remove any catalytic element salt retained within pores in the depleted powder and the catalytic element is purified from the salt.

The invention relates to a method for recycling a membrane electrode of a proton exchange membrane fuel cell. The membrane electrode comprises a cathode catalysis layer, an anode catalysis layer and a proton exchange membrane. The method comprises the following steps: putting a to-be-recycled membrane electrode into alcohol-water mixed liquid, and carrying out ultrasonic treatment or wet-process ball milling until the cathode catalysis layer and the anode catalysis layer are completely separated from the proton exchange membrane; taking out the processed membrane electrode, and cleaning, so as to obtain a recycled to-be-used electrolyte membrane; and carrying out solid-liquid separation on black slurry, and carrying out high-temperature processing on solid matters, so as to obtain a catalyst containing precious metals. Compared with the prior art, the method has the advantage that the cost of the proton exchange membrane fuel cell is lowered. The method has the outstanding characteristics that the catalysis layers and the membrane in an MEA of the proton exchange membrane fuel cell are separated by virtue of a mild method and are respectively recycled; and the recycled catalyst can be repeatedly used or can be further purified, so as to obtain the precious metals, and the recycled electrolyte membrane can be repeatedly used or can be further dissolved, so as to obtain an electrolyte membrane emulsion or a re-cast membrane.

The invention relates to a fuel cell and a method for diassembling the same. The fuel cell (10) comprises: two end plates (18) arranged on either side of a cell stack (12) in the direction of lamination thereof; a fastening band (22) for fastening the cell stack (12) and the end plates (18) in the direction of lamination; a connecting portion (24) for connecting one end portion (22e) of the fastening band (22) with the other end portion (22f) thereof; and a displacement restricting portion (26) provided in at least one of the two end plates (18) for restricting the displacement of the fastening band (22) in the direction away from a surface (18c) of the end plates (18).

A method for recovering and recycling catalyst coated fuel cell membranes includes dissolving the used membranes in water and solvent, heating the dissolved membranes under pressure and separating the components. Active membranes are produced from the recycled materials.

The invention relates to a battery device and a packaging, dismounting and recovering method of same. The method comprises the following steps of: firstly, arranging an anode conducting assembly in a reaction tank frame, and protruding an anode conducting bump out of the reaction tank frame; subsequently, respectively covering a first opening and a second opening of the reaction tank frame by using two groups of cathode conducting assemblies to form a reaction area capable of accommodating electrolyte; subsequently, laying a metal fixing part on the surfaces of the cathode conducting assemblies and the reaction tank frame; and finally, fastening the metal fixing part by using a fastener. Thus, the battery device provided by the invention for a user has the characteristics of simple structure, rapid packaging, dismountability and recyclability through special structural design, and thus, the problems of difficult packaging and dismounting, difficult recovering and the like caused by complex structure of the traditional battery device are solved.