Chinese Academy of Sciences

Samsung Sdi Co., Inc.

Headwaters Technology Innovation, LLC

Gm Global Technolgoy Operations, Inc.

Dalian Institute

Gongquan Sun

Qin Xin

Suli Wang

Luhua Jiang

Bing Zhou

Hyuk Jae Chang

Changkun Liu

Shiguo Sun

Shuihua Tang

Erdong Wang

Zhangxun Xia

Mei Cai

Chan-ho Pak

Seung-jae Lee

Ji-rae Kim

Min Liu

Zhao Yan

Seol Ah Lee

Qiwen Tang

Shengnan Ma

Xudong Fu

Bing Qin

Dae-jung Yoo

Xinsheng Zhao

Lizhi Yuan

Juan Tian

Jicai Huang

Hai Sun

Shaohua Yang

Xi Chen

An electrode material of a fibrous structure has a platinum-based electrocatalytic material, an electrospinning polymer material, and an oxide material and/or one or more organophosphorus acid material with ion conduction. In the micromorphology has the structure of nanofibers, but also has porous morphological characteristics, the electrode material of this structure is prepared by electrostatic spinning technology, can be used as a high-temperature polymer electrolyte membrane fuel cell porous electrode.

Fibrous electrode material, preparation and application thereof

A method for flattening the proton exchange membrane for the fuel cell and an apparatus therefor are used in flattening the proton exchange membrane which is soaked with phosphoric acid. The control precision of this method can be higher than the traditional adsorption method. The mechanical transfer of proton exchange membrane can be realized so that the processing efficiency of proton exchange membrane in the process of fuel cell membrane electrode assembly is greatly improved.

Method for flattening proton exchange membrane for fuel cell and apparatus therefor

A multi-fuel fuel cell system is based on the distributed hydrogen production and fuel cell technologies is presented. The system includes fuel supply unit, fuel processor, fuel cell, heat exchange and oxidizer supply units. The fuel processor is a plasma-catalytic reformer. The heat exchange unit is a multiflow heat exchanger which is of a cascading structure from bottom top or a concentric cylinder structure from inside to outside. The multiflow heat exchanger has the function of balancing the heat of fuel processor and fuel cell. The fuel storage is connected to the fuel processor by the pipeline and provides fuel for the fuel processor. The outlet of fuel processor is connected via the multiflow heat exchanger to the fuel cell anode, and provides reactant for the fuel cell.

Multi-fuel fuel cell system and operation method thereof

A metal seawater fuel cell includes a single cell or a battery pack which is composed of more than two single cells connected in series or in parallel or in series and parallel through circuits. The single cell has a metal anode arranged oppositely in a sealed single cell housing, a cathode carrying a hydrogen evolution catalyst, and a diaphragm arranged between the metal anode and the cathode, the bottom and the top of the single cell housing are respectively provided with fluid flow channels, and both ends of the fluid flow channels are respectively provided with openings communicated with the interior and exterior of the housing. The metal anode and/or single cell housing is placed in a closed transitional housing. The transitional housing is a degradable material or can be mechanically damaged by a driving device driven and started by a control device.

Metal seawater fuel cell

A direct liquid fuel cell power generation device comprises a direct liquid fuel cell system and a low-temperature auxiliary starting component. A heat exchanger is arranged at a stack cathode inlet. The heat of a fuel solution at a stack anode outlet is used to heat the air. The heat generated by an electronic load for starting is used to heat a condenser. The heat of a methanol solution at a liquid outlet of a gas-liquid separator is used to preheat high-concentration fuel flowing into a refueling pump. Starting and operation in a low-temperature environment can be realized through auxiliary heating of external power supplies such as the low-temperature auxiliary starting component or an in-vehicle cigarette lighter. Organic micromolecule substances such as methanol and ethanol are used as fuel and are subjected to catalytic combustion in a catalytic combustor.

Direct liquid fuel cell power generation device

An ionic conductance measuring instrument comprising a voltage/current test device and a test electrode, in which the test electrode comprises a bulk substrate with four linearly arranged through holes, four Pt wires inserted in the through holes respectively with their upper ends exposed outside of the bulk and their downside ends hidden inside of the bulk; the four axis of the Pt wire is in the same plane and parallel with each other; the gap distance between the mentioned Pt wire and the bulk substrate is 0.1-2 mm, and is filled with ionic conductive polymer.

Device for detection of ionic conductivity and its applied measurement

A hierarchical porous material contains primary pore aggregates. The primary pore aggregates combine to form the secondary pore aggregates. The secondary pore aggregates connect to each other formed the hierarchical porous material. There are primary pores on the primary pore aggregates wherein the diameter of primary pore is 5-500 nm. There are secondary pores on the secondary pore aggregates wherein the diameter of secondary pore is 1-5 &#x3bc;m. The hierarchical porous material is used as oxygen reduction reaction (ORR) catalysts or photocatalysts having a significantly improved catalytic activity.

Hierarchical porous material and the preparation method thereof

A seawater battery of dissolved oxygen type includes a battery frame (), n pieces of metal anode plates (), n pieces of inert cathode plates (), current collectors and wires (). The battery frame () is consisted of an upper base () and a lower base (), wherein the upper base and the lower base are respectively consisted of an outer ring and a central fixing component. The fixing component is connected with and fixed to the outer ring by a connector, and n pieces of metal anode plates are inserted on the connector so as to construct a cylindrical or frustum-shaped structure. The inert cathode plates are inserted between the metal anode plates along radial direction of the outer ring, and are connected with and fixed to the outer ring and the fixing component of the upper base and the lower base. The metal anode plates are welded in series by wires constituting the anode of the battery and the inert cathode plates are welded in series by wires constituting the cathode of the battery.

Seawater battery of dissolved oxygen type

An Ag/MnO/C catalyst is disclosed, wherein MnOis one of MnOand MnO, or the mixture of MnOand MnO, or the mixture of MnOand MnOwith the mass content of MnOin the mixture of MnOand MnObeing 0.01-99.9%. The catalyst is obtained by pyrolyzing AgMnOat a high temperature. The preparation method comprises two steps: (1) preparing AgMnOcrystal as the precursor; (2) preparing the Ag/MnO/C catalyst. The catalyst has advantages such as high oxygen reduction reaction (ORR) catalytic activity in an alkaline environment, good stability, abundant availability and low cost of raw materials, safety, non-toxicity and pollution-free, environmental friendliness, and adaptive capacity for massive production. The catalyst can be used as oxygen reduction catalyst in metal air fuel cell, alkali anion exchange membrane fuel cell and other alkaline environments.

Ag/MnyOx/C catalyst, preparation and application thereof

The fuel cells include electrode membrane assemblies having a nanoparticle catalyst supported on carbon nanorings. The carbon nanorings are formed from one or more carbon layers that form a wall that defines a generally annular nanostructure having a hole. The length of the nanoring is less than or about equal to the outer diameter thereof. The nanorings exhibit high surface area, high porosity, high graphitization, and/or facilitate mass transfer and electron transfer in fuel cell reactions.

Fuel cells and fuel cell catalysts incorporating a nanoring support

A method of preparing a supported catalyst includes dissolving a cation exchange polymer in alcohol to prepare a solution containing cation exchange polymer; mixing the cation exchange polymer containing solution with a catalytic metal precursor or a solution containing catalytic metal precursor; heating the mixture after adjusting its pH to a predetermined range; adding a reducing agent to the resultant and stirring the solution to reduce the catalytic metal precursor; mixing the resultant with a catalyst support; adding a precipitating agent to the resultant to form precipitates; and filtering and drying the precipitates. The method of preparing a supported catalyst can provide a highly dispersed supported catalyst containing catalytic metal particles with a reduced average size regardless of the type of catalyst support, which provides better catalytic activity than conventional catalysts at the same loading amount of catalytic metal.

Supported catalyst and method of preparing the same

A method of estimating a lifespan of a fuel cell including a cathode and an anode which contain catalysts and an electrolyte membrane interposed between the anode and the cathode. A cyclic potential with a voltage ranging from a low voltage to a voltage greater than oxidation voltages of the catalysts is applied between the anode and the cathode and fuel cell performance is measured initially and after a predetermined number of cycles. The lifespan of the fuel cell may estimated based on degradation of cell performance after the predetermined number of cycles, based on CV curves obtained during the cycling of the potential and/or a change in particle size of the catalysts after the predetermined number of cycles.

Accelerated testing method of rapidly evaluating lifespan of fuel cell

Methods for manufacturing carbon nanostructures include 1) forming intermediate carbon nanostructures by polymerizing a carbon precursor in the presence of templating nanoparticles, 2) carbonizing the intermediate carbon nanostructures to form an intermediate composite nanostructure, and 3) removing the templating nanoparticles from the intermediate composite nanostructure to form carbon nanorings. The carbon nanorings manufactured using the foregoing steps have one or more carbon layers forming a wall that defines a generally annular nanostructure having a hole. The length of the nanoring is less than or about equal to the outer diameter thereof. The carbon nanostructures are well-suited for use as a fuel cell catalyst support. The carbon nanostructures exhibit high surface area, high porosity, high graphitization, and facilitate mass transfer and electron transfer in fuel cell reactions. Carbon nanorings manufactured according to the present invention can be used as a substitute for more expensive and likely more fragile carbon nanotubes.

Carbon nanorings manufactured from templating nanoparticles

An electrocatalyst including an active catalyst component and an additive including a transitional metal, transitional metal oxide or complex precursor thereof, products including such an electrocatalyst and methods of making and using the same.

Growing community of inventors

Dalian, China

Gongquan Sun