Fuel Cell

Eliminate traditional power generation methods Eliminate traditional power generation methods – Cheersonic In-depth analysis: With the advent of fuel cells, will traditional power generation methods be eliminated? The basic working principle of  fuel cells  may not be difficult to explain. However, manufacturing cheap, efficient, and reliable fuel cells is a very complicated matter. In order to improve efficiency, scientists have designed many different types and sizes of fuel cells, each of which has different technical details. Many of the choices faced by fuel cell developers are limited by the choice of electrolyte. For example, the design of the electrode and the material used to make the electrode depend on the electrolyte. Today, the main electrolyte types are alkali, molten carbonate, phosphoric acid, proton exchange membrane (PEM) and solid oxide. The first three are liquid electrolytes; the last two are solids. The type of fuel also depends on the electrolyte. Some b...

  Ultrasonic Spray For Electrode Coating Ultrasonic Spray For Electrode Coating. Maximizing the use of Electrode in the Fuel Cell by ultrasonic spray As a promising substitution to conventional power sources rely on combustion of fossil fuels, proton exchange membrane fuel cells (PEMFC) have attracted plenty of interest for various applications such as power sources for portable electronics, stationary power generation, and onto mobiles. At the present time, PEMFCs are still facing the challenges of cost as well as performance issues before they can be largely commercialized. As an important part of the proton exchange membrane fuel cell, the electrode is to study how to reduce the Pt loading of the cathode without reducing the performance of the  fuel cell , so that the large-scale commercialization of PEMFC can achieve further development.In order to reduce the Pt loading as well as improve the catalyst performance, carbon nanofibers (CNFs) directly grown on carbon paper is ...

  Improving Fuel Cell Performance With AI Fuel cells  use clean hydrogen fuel, which can be generated by wind and solar energy, to produce heat and electricity, and lithium-ion batteries, like those found in smartphones, laptops, and electric cars, are a popular type of energy storage. The performance of both is closely related to their micro-structure: how the pores (holes) inside their electrodes are shaped and arranged can affect how much power fuel cells can generate, and how quickly batteries charge and discharge. However, because the micrometer-scale pores are so small, their specific shapes and sizes can be difficult to study at a high enough resolution to relate them to overall cell performance. Now, Imperial researchers have applied machine learning techniques to help them explore these pores virtually and run 3D simulations to predict cell performance based on their micro-structure. The researchers used a novel machine learning technique called “deep convolutional ge...

Does hydrogen energy really work? Japan and South Korea have been insisting on the development of hydrogen fuel cell passenger vehicles. From the product point of view, Toyota, Honda, and Hyundai have all launched hydrogen fuel cell passenger vehicles that can be mass-produced. The persistence of the above is very strong. European car companies are two-faceted, both pure electric passenger cars and hydrogen fuel cell passenger cars are studying. However, this argument has gradually become clear. Recently, foreign media reported that Mercedes-Benz, a subsidiary of Daimler, recently announced that it would cancel its plan to develop hydrogen fuel cell passenger vehicles. Prior to this, Volkswagen had given up the development of hydrogen fuel cell vehicles and firmly stood on the pure electric line. Now Daimler has also given up the development of hydrogen fuel cell passenger cars. The only major European car company is BMW. The development of hydrogen fuel cell passenger vehicles also me...

Will hydrogen energy vehicles eventually replace lithium batteries? Let me start with the conclusion that for a long period of time, liquid lithium batteries are still the main choice for vehicle power batteries. Solid-state batteries, hydrogen energy and related alternative energy sources (methanol, etc.) are still in the stage of industrial demonstration. There is no possibility of large-scale industrialization. In fact, as an energy source, hydrogen has already mentioned many problems in the preparation and transportation of hydrogen. Another point is that from the perspective of vehicle use, the current problems faced by electric stacks include service life and reliability. The problem, of course, large-scale industrialization also has the problem of volume and cost, but even without the cost theory, the hydrogen stack still cannot work stably for a long time, and this involves many technical bottlenecks that have not been resolved. In the long run , A long way to go. At present, o...

  Research on non-precious metal catalysts Research on non-precious metal catalysts.   Research progress of non-precious metal catalysts for proton exchange membrane fuel cells Proton exchange membrane fuel cells  (PEMFCs), with their high-tech advantages such as high efficiency, low noise, low temperature quick start, and zero pollution, are very suitable as the power source of new energy and environmentally friendly vehicles. At present, noble metal Pt-based catalysts are still the most commonly used catalysts for PEMFCs. Although PEMFCs technology has made major breakthroughs in recent years, its high price and shortcomings of easy poisoning are important reasons why PEMFCs are difficult to commercialize on a large scale. Studies have shown that under the premise of large-scale production, 46% of the cost of PEMFCs comes from the Pt-based catalysts used. In order to reduce the cost of PEMFCs, researchers have improved the catalyst structure to reduce Pt loading, increa...

  Ultrasonic Spraying Fuel Cell GDL Ultrasonic Spraying Fuel Cell GDL – Coating Gas Diffusion Layer Maximizing the use of GDL in the  Fuel Cell  by ultrasonic spray application The Gas Diffusion Layer (GDL) plays several critical roles in a typical fuel cell application and is often integrated as part of the Membrane Electrode Assembly (MEA). Typical applications that use GDLs consist of Polymer Electrolyte Fuel Cells (PEMFC) and Direct Methanol Fuel Cells (DMFC). When a GDL is coated with a catalyst it is than referred to as a Gas Diffusion Electrode (GDE), which are sometimes sold or installed separately from the Membrane or MEA. Acting as an electrode is the easy part of the GDL/GDE, though. The GDL is a porous structure made by weaving carbon fibers into a carbon cloth (e.g. GDL-CT and ELAT) or by pressing carbon fibers together into a carbon paper (e.g. Sigracet, Freudenberg, and Toray).Many of the standard GDLs that are produced today come with a Micro Porous layer ...

  Proton Exchange Membrane Fuel Cell Research on Bipolar Plate of Proton Exchange Membrane Fuel Cell With the world’s increasing energy demand and environmental pollution concerns, fuel cells have attracted widespread attention. They are a power generation system that directly and continuously convert chemical energy into electrical energy. It is the fourth type of power generation after hydropower, thermal power and nuclear power. Device. Theoretically, the fuel cell electric heating conversion efficiency can reach 85%~90%. According to different electrolytes, fuel cells can be divided into alkaline fuel cells (AFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC) and proton exchange membrane fuel cells (PEMFC) Five categories. Among them, the proton exchange membrane fuel cell is a low-temperature fuel cell (as shown in Figure 1). It has the characteristics of high conversion efficiency, low operating temperature and low pollut...

Design and selection of fuel cell gas diffusion layer As an important component of the membrane electrode, the design and selection of the gas diffusion layer should be adapted to local conditions according to factors such as the water management characteristics of the stack, the size of the electrode plate, and the target thickness of the monomer. The gas diffusion layer (GDL) is a type of hydrophobic porous medium material, located between the flow field plate and the catalytic layer, acting as a carrier for water and gas transport, heat transfer, and electron conduction, and provides structural support during assembly and operation. GDL is usually composed of a macroporous substrate (MPS) and a microporous layer (MPL). Among them, the base layer is usually composed of an anisotropic stack of carbon fibers and directly contacts the flow field plate; the microporous layer is formed by mixing carbon-based powder and a water-repellent agent and directly contacts the catalytic layer. Key...

The attenuation mechanism of proton exchange membrane fuel cell stack under vehicle start-up and shutdown conditions Open/idle speed, variable load, start and stop are the three key vehicle operating conditions that accelerate the aging of fuel cell stack materials and components. Among them, the main reason that affects the durability of the fuel cell under startup and shutdown conditions is the high interface potential difference caused by the hydrogen/air interface. This article shares the attenuation mechanism of fuel cell life under startup and shutdown conditions. Start-up and shutdown is a special condition that triggers abnormal fuel cell reactions. The main reason for accelerating fuel cell degradation is the high cathode interface potential difference (up to 1.5V) caused by the anode hydrogen/air interface. Under startup and shutdown conditions, the carbon support that constitutes the main framework of the catalytic layer will be severely corroded, which will affect the Pt ca...

The importance of fuel cell system simulation platform At present, an electric-electric hybrid solution using fuel cells and power batteries as energy sources has become a main power architecture of FCV. The fuel cell electric hybrid solution must not only ensure the high stability and reliable output of the fuel cell stack, but also efficiently distribute the output power of the fuel cell and the power battery. At the initial stage of development, the establishment of a fuel cell system simulation platform in the laboratory plays an important role in the rapid research and verification of power system reliability, energy distribution strategies and algorithms. Compared with power batteries, fuel cells have obvious advantages in terms of lightweight, long endurance and low temperature characteristics, and can solve the problem of slow charging (hydrogenation). At present, the electric-electric hybrid propulsion scheme with fuel cell-lithium battery as the power source has gradually at...