Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Nikhil H. Jalani"'
Autor:
Ravindra Datta, Greg Pacifico, Nikhil H. Jalani, Steve Buelte, Manikandan Ramani, Richard Pollard, Kristina Ohlsson, Rhonda Staudt
Publikováno v:
Journal of Power Sources. 160:1096-1103
Polarization curves, i.e., dc performance, and impedance spectral signatures of polybenzimidazole (PBI)–phosphoric acid (H3PO4) membrane fuel cells are obtained in the temperature range of 160–180 ◦ C, in an effort to investigate the effect of
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 44:2183-2200
A phenomenological theory is provided for water sorption and proton transport in polymer electrolyte membranes (PEMs) as well as in polymer-inorganic nanocomposite membranes (NCPEMs) that not only serves to rationalize the sorption and conductivity b
Autor:
Nikhil H. Jalani, Ravindra Datta
Publikováno v:
Journal of Membrane Science. 264:167-175
A novel experimental technique, namely tapered element oscillating microbalance (TEOM) is utilized to study the effect of equivalent weights (960–1200), temperature (30–90 °C), various cationic forms (H + , Li + , Na + , K + and Cs + ), sorbates
Publikováno v:
Electrochimica Acta. 51:553-560
Nafion ® -MO 2 (M = Zr, Si, Ti) nanocomposite membranes were synthesized with the goal of increasing the proton conductivity and water retention at higher temperatures and lower relative humidities (120 °C, 40% RHs) as well as to improve the thermo
Publikováno v:
Journal of Membrane Science. 254:31-38
A new technique, namely, the tapered element oscillating microbalance (TEOM) is successfully utilized to investigate the equilibrium water and methanol vapor phase sorption and desorption in Nafion ® membrane at different relative humidity (RH) and
Publikováno v:
Solid State Ionics. 175:815-817
A thermodynamic model is developed to describe methanol sorption phenomena in proton exchange membranes (PEMs). The methanol sorption in the model is determined by the swelling pressure caused within the membrane as a result of stretching of the poly
Publikováno v:
Journal of The Electrochemical Society. 152:A1548
A proton transport model is proposed to describe proton diffusion in Nafion/(ZrO 2 /SO 2 - 4 ) nanocomposite membranes. The model considers the water content which could be determined by thermodynamics, dissociation of protons near the acid surface,
Publikováno v:
Journal of The Electrochemical Society. 152:A316
The design of higher temperature composite proton-exchange membranes ~PEMs! with adequate performance under low relative humidity ~RH! is discussed here based on experimental and theoretical considerations. The approach is based on enhancing the acid