A mathematical model of transport in a solid-polymer-electrolyte fuel cell is presented. A two-dimensional membrane-electrode assembly is considered. Water
READ MOREAbstract. The proper balance between water production and removal is particularly important for successfully operating solid‐polymer‐electrolyte fuel cells. Imbalance between production and evaporation rates can result in either flooding of the electrodes or membrane dehydration, both of which severely limit performance.
READ MORERecently, polymer electrolytes have been developed for high-performance and eco-friendly fuel cells. Among the candidates, eggshell membrane (ESM) has been promising because of its abundance to assemble various energy devices with low cost and its absorption ability of organic materials. In this work, we investigated fuel cells
READ MOREThe evolution of membranes for fuel cell applications started as early as 1959 by GE with the testing of phenolic membranes, prepared by polymerization of phenol–sulfonic acid with formaldehyde. These membranes had low mechanical strength and a short lifetime of 300–1000 h and showed a power density of 0.05–0.1 kW m −2 [33].
READ MORENew solid polymer electrolyte composite membranes have been prepared using chitosan as matrices and incorporating potassium hydroxide as the
READ MORERecently, polymer electrolytes have been developed for high-performance and eco-friendly fuel cells. Among the candidates, eggshell membrane
READ MORENature Communications - Polymer electrolyte fuel cells are promising but suffer from low performance. Here, the authors use a combination of electrochemical
READ MORESOLID POLYMER ELECTROLYTE FUEL CELLS (SPEFCs) 4. 1 Background Synthetic cation-exchange resins, in the form of polymerized organic sulfonic acids and as small beads, became available in 1945. ^ These, in combination with anion-exchange resins containing amine groups, allowed delonizatton of water and also various
READ MOREFive categories of fuel cells have received major efforts of research: (1) polymer electrolyte membrane (PEM) fuel cells or PEMFCs (also called PEFCs), (2) solid oxide fuel cells (SOFCs), (3) alkaline fuel cells (AFCs), (4) phosphoric acid fuel cells (PAFCs), and
READ MOREPublisher Summary. This chapter describes the development of the solid polymer electrolyte fuel cells (SPEFC). When research on the SPEFC system started at GE in the 1950s, the aim was to produce an electrolyte membrane with the following properties: (1) good hydrogen-ion conductivity with a transport number of unity for
READ MOREPolymer electrolyte membrane (PEM) fuel cells, which convert the chemical energy stored in hydrogen fuel directly and efficiently to electrical energy with
READ MOREWe present a mathematical model of the solid‐polymer‐electrolyte fuel cell and apply it to (i) investigate factors that limit cell performance and (ii) elucidate the
READ MOREPolymer electrolyte membrane fuel cell (PEMFC) is the most popular type of low temperature fuel cells and has significnat advantages of all solid components, high power density, fast startup and shutdown capability and fast resposes to
READ MOREA fuel cell consists of two electrodes—a negative electrode (or anode) and a positive electrode (or cathode)—sandwiched around an electrolyte. A fuel, such as hydrogen, is fed to the anode, and air is fed to the cathode. In a polymer electrolyte membrane fuel cell, a catalyst separates hydrogen atoms into protons and electrons, which take
READ MOREIn fuel cell: Solid polymer electrolyte fuel cells. A cell of this sort is built around an ion-conducting membrane such as Nafion (trademark for a perfluorosulfonic acid membrane). The electrodes are catalyzed carbon, and several construction alignments are feasible. Solid polymer electrolyte cells function well (as attested to. Read More.
READ MOREIn this work, we investigated fuel cells that included ESM-absorbing xanthene-, triphenylmethane-, and azo-type tar dye, which contained abundant hydrophilic groups, as polymer electrolytes. We found out two points: (1) that the fuel cells that included ESM-absorbing xanthene-type dye generated the highest I - V performance, and
READ MORE4 · Compared with C-SPAEKS (0.867 V and 166 mW cm –2), it can be seen that our work has a certain effect on the improvement of the single cell performance. The above
READ MORECompared with low-temperature fuel cell using liquid electrolytes, a solid polymer electrolyte membrane provides mechanical strength and flexibility and therefore
READ MOREAs a key component in fuel cells, polymer electrolyte membrane (PEM) provides channels for ion transport and prevents fuel crossover, which plays a critical role
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