PEM Fuel Cell
Proton exchange membrane fuel cell (proton exchange membrane fuel cell, PEM fuel cell or PEMFC for short)
The PEM fuel cell contains a membrane electrode assembly (membrane electrode assembly, MEA for short), which is composed of a gas diffusion layer, electrodes and polymer electrolyte membranes. An electrochemical reaction takes place in the MEA to generate electricity.
Membrane electrode is the place of multiphase material transport and electrochemical reaction, which determines the performance, life and cost of proton exchange membrane fuel cell. The membrane electrode and the bipolar plates on both sides form the basic unit of the fuel cell-a single fuel cell. In practical applications, multiple single cells can be combined into a fuel cell stack to meet the needs of different sizes of power output according to the needs of the design.
MEA structure design and optimization, material selection and optimization of preparation process have always been the key technology of PEMFC research. In the development process of PEMFC, membrane electrode technology has undergone several generations of innovations, which can be roughly divided into three types: hot pressing method, CCM method and ordered membrane electrode.
PEM Fuel Cell Coating
PEM fuel cell coating refers to functional thin‑film layers applied on core components of proton‑exchange‑membrane fuel cells, covering catalyst layers, gas‑diffusion‑layer modification and bipolar‑plate protective coatings, which directly determine cell power output, service life and manufacturing cost.
The catalyst layer is the electrochemical reaction core. Catalyst ink containing platinum‑based particles, ionomer and solvent is deposited onto membranes or substrates. Uniform coating guarantees sufficient three‑phase boundaries for hydrogen‑oxidation and oxygen‑reduction reactions, improves catalyst utilization and lowers precious‑metal consumption. For gas diffusion layers, hydrophobic coatings maintain pore structure, facilitate water drainage and prevent flooding under high‑current operation.
For metallic bipolar plates, conductive anti‑corrosion coatings solve the critical problem of metal substrate corrosion in acidic, humid working environments. Such coatings reduce interfacial contact resistance, block metal‑ion leakage that poisons membranes and catalysts, and support high‑density compact stack design. Main coating materials include amorphous carbon, metal nitride and composite conductive layers.
Common fabrication technologies include ultrasonic spray coating, physical vapor deposition and slot‑die coating. Ultrasonic spray delivers soft atomized droplets to achieve conformal, pinhole‑free thin films with controllable thickness, suitable for high‑precision membrane‑electrode‑assembly production.
Major industrial challenges include consistent large‑batch deposition, stable adhesion under thermal‑humidity cycling, and balancing performance with material cost. Advanced coating technologies are key enablers for commercial PEM fuel cells applied in transportation and stationary power generation.
Cheersonic’s unique ultrasonic spray technology delivers efficient, stable and precision coating, which improves the catalyst utilization and improves the three-dimensionality. Designed for sprayingPEM, GDL, Electrode and electrolyte materials, as well as carbon black ink suspension, PTFE binder, ceramic slurry, platinum, platinum and other expensive metal catalysts. The standing model can meet the needs of R&D.
Video of Ultrasonic Fuel Cell Coating
About Cheersonic
Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.
Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.
Chinese Website: Cheersonic Provides Professional Coating Solutions
