Dielectric properties of Polymer Electrolyte - ethesis

At some stage you need to develop an hypothesis. Perhaps there is an optimum amount of flocculant that can be used (too much or too little doesn't work at well). You'd also need some theory to support your hypothesis. Where to get the flocculants? The cationic PolyDADMACis available Focus Brand or many other proprietary names. (PAM) is also available from pool shops with brand names like Aquatic Element's , Premium Quality's Bioguard's , or . Note: don't get mislead by the internet: polyacrylamide is also available from the gardening section of a hardware shop as "water retaining crystals" - brand names like ; and surprisingly also available from shops that sell disposable nappies (eg , ) which have the polyacrylamide as the water absorbent (rip one open).

Despite great interest muchremains unknown about the conductivity of polymer electrolytes.

With the rapid development of wearable electronics and sensor networks, batteries cannot meet the sustainable energy requirements due to their limited lifetime, size and degradation. Ambient energies such as wind have been considered as an attractive energy source due to its copiousness, ubiquity, and feasible nature. With miniaturization leading to high-power and robustness, triboelectric nanogenerators (TENG) have been conceived as a promising technology by harvesting mechanical energy for powering small electronic systems. In this work, a state of the art TENG based on a wind venturi system is demonstrated for use in any complex environment. With the introduction of wind into the air channel of the TENG system, a thin flexible based film repeatedly contacts with and separates from the electrodes. Compound stacking not only amplifies the output power but also enables powering multiple sensor networks in remote area utilization. The system converts ambient mechanical energy to electricity with a 1.2kV peak amplitude by rapid super capacitor charging for powering an environmental sensor network. Different thin polymer materials are investigated by comparing the output power and mechanical stability performance. An autonomous sensor network system has been setup to monitor various environmental parameters and send real time signals for periodic analysis. The study also includes the influence of humidity and wind force under different environmental conditions. By considering these merits of simple fabrication, robust characteristics and outstanding performance, the TENG system could provide an autonomous detection system allowing clean and uninterrupted energy production.

Polymer Electrolyte Thesis - Triepels

A numberof topics concerned with polymer electrolyte conductivity are discussedin this work.

(2009)Synthesis and characterization of polyimides: membrane material for gas permeation and polymer electrolyte for fuel cell. PhD thesis, CSIR-National Chemical Laboratory, Pune, India.

High Temperature Polymer Electrolyte Membranes ..

Plasma is a straw-coloured aqueous solution of electrolytes, non-electrolytes and macromolecules (including clotting factors); serum is plasma without the clotting factors (Que Hee, 1993).

the Polymer Electrolyte Fuel Cell," Doctoral thesis ..

For example, one can assess the levels of cell wall components such as ß-1,3-glucan (Rylander et al., 1992), or ergosterol, a membrane steroid (Horner et al., 1994), or extracellular polysaccharides (EPS) (Kamphuis et al., 1991).

led to the development of polymer electrolyte ..

Dispersion of carbon nitride (C3N4) nanosheets into a nickel phosphorous (NiP) matrix was successfully achieved by ultrasonication during the electroless plating of NiP from an acidic bath. The morphology and thickness, elemental analysis, phases, roughness and wettability for as-plated and heat-treated nanocomposite were determined by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, atomic force microscopy and contact angle measurements, respectively. C3N4 showed a homogeneous distribution morphology in the nanocomposite that changed from amorphous in case of the NiP to a mixed crystalline-amorphous structure in the NiP-C3N4 nanocomposite. The microhardness and corrosion resistance of the nanocomposite as plated and heat treated nanocomposite coating were significantly enhanced compared to the Ni-P. The nanocomposite showed a superior corrosion protection efficiency ~ 95%, as observed from the electrochemical impedance spectroscopy (EIS) measurements. On the other hand, the microhardness of the nanocomposite was significantly increased from 500 to reach 1175 HV200 for NiP and NiP-C3N4 respectively.