Your essays are usually handled by custom-made generating expert services trained professionals – our authors, researchers in specifically your sphere of survey with years of ordeal custom essays
Your essays are going to be handled by custom made coming up with customer service individuals – our writers, medical experts in just your line of business of research study with decades of valuable experience writers help
Thinking about the reliability regarding your university essays? Our top notch authors are prepared to provide the most reliable plagiarism checker treatments for composing plagiarism at no cost essays and papers write my paper .
Obtain tailor-made essay from the pro penning provider at the most the best prices and also the highest quality. Discussion the tightest work deadlines is secured by consistent authors essay writers service .
Wanting a good homepage to buy stellar essays? Paying up our stunning authors to have your essays well-written will be the terrific solution buying research paper .
Fed up with your pencil? Have totally no beliefs on the topic? Need to mix your career with analyzing? Or only your neighbor has a celebration of the year yet you buy essay service .
Hydrogen + Oxygen (from the air) → Electricity + Water Vapor
A fuel cell is a device that converts chemical energy into electrical energy.
A PEM (Proton Exchange Membrane) cell uses hydrogen gas and oxygen (from the air) as fuel. The product of the reaction in the cell is water releasing electricity, and heat.
This is a much cleaner way to produce energy than burning coal or internal combustion engines which produce poisonous bi-products.
Since oxygen is readily available in the atmosphere we only need to supply the fuel cell with hydrogen which can be made by electrolysis
The main parts of a PEM Fuel Cell:
At the anode the platinum catalyst cause the hydrogen atom to lose its electron and turn into a hydrogen ion (H+). The channels in the anode spread the hydrogen gas equally over the surface..
At the cathode electrons combine with the hydrogen ions to form hydrogen which join with oxygen atoms to form water.
The key to the cell is the Polymer Electrolyte Membane (PEM) which allows the hydrogen ions to pass though it but blocks the electrons.
The electrons have to move along an external wire (as in a normal battery cell) to get from the anode to the cathode.
The catalyst is a special material that speeds up the reaction between oxygen and hydrogen. It is usually made of tiny platinum particles very thinly coated onto carbon paper or cloth. The catalyst is rough and porous so that the maximum surface area of the platinum can be exposed to the hydrogen or oxygen. The platinum-coated side of the catalyst faces the PEM.
Due to the high energetic content of hydrogen and high efficiency of fuel cells (55%), this great technology can be used in many applications like transport (cars, buses, forklifts, etc) and backup power to produce electricity during a failure of the electricity grid.
Advantages fuel cells over internal combustion engines:
term paperessay writingOur paper writing services are provided by experienced writing professionals who understand the process behind creating academic papers. Experts inside our professional writing team have years of experience behind them and offer customers across the world original content at affordable rates. We strive to satisfy academic criteria on every course imaginable, and work tirelessly to meet all deadlines with best essay writing service. We guarantee that our papers are plagiarism-free. Each order is handcrafted thoroughly in accordance to your personal preferences and unique requirements.