Modeling, design, materials and fabrication of bipolar plates for proton exchange membrane fuel cell: A review

High-pressure PEM water electrolyser: A review on challenges and mitigation strategies towards green and low-cost hydrogen production

Electrochemical aspects of interconnect materials in PEMFCs

Process and challenges of stainless steel based bipolar plates for proton exchange membrane fuel cells

Development and characterization of NiMoP alloy coating for electrocatalytic hydrogen evolution reaction in alkaline media

Development and evaluation of nitride coated titanium bipolar plates for PEM fuel cells

The invention provides a special-shaped current collector, a PEM water electrolysis hydrogen production device and a water electrolysis hydrogen production method. The special-shaped current collectorcomprises a first channel composed of a porous substrate, and a second channel arranged along a flow channel formed in the top surface of the porous substrate or perpendicular to a straight through hole formed in the top surface of the porous substrate. The first channel and the second channel jointly form a gas-liquid transmission channel. The special-shaped current collector is a special-shapedcurrent collector device with the functions of a flow field plate and a gas-liquid diffusion layer of a fuel cell and a water electrolysis cell, so that the purposes of reducing the cost and optimizing the structures of the fuel cell and the water electrolysis cell can be achieved.

Special-shaped current collector, PEM water electrolysis hydrogen production device and water electrolysis hydrogen production method

The invention provides a preparation method of a nitride coating on the surface of a titanium alloy bipolar plate. According to the preparation method, a continuous and compact metal nitride coating is prepared on the surface of titanium alloy. The compact oxide film on the surface of the modified substrate is replaced by the nitride coating with good conductivity, so the interface contact resistance (ICR) between a titanium alloy bipolar plate and a gas diffusion layer is reduced to 6m ohm cm from 55m ohm cm before modification under the pressing force of 150N cm . In a simulated PEMFC working environment, the corrosion current density of the modified titanium alloy bipolar plate is reduced to 0.01 [mu]Acm , and the corrosion resistance is improved compared with that before modification. Compared with magnetron sputtering, multi-arc ion plating and other metal nitride coating deposition methods, the method has the advantages of simple process, low cost, good coating binding force and the like, and is beneficial to promoting commercial production of bipolar plate materials.

Liu Xiaoxiang

Papers

Development and evaluation of nitride coated titanium bipolar plates for PEM fuel cells

Special-shaped current collector, PEM water electrolysis hydrogen production device and water electrolysis hydrogen production method

Preparation method and application of nitride coating on surface of titanium alloy bipolar plate