High-Temperature PEMs

Song, Y, Xu, H., Wei, Y, Kunz, H. R., Bonville, L. J., and Fenton, J. M. Dependence of high-temperature PEM fuel cell performance on Nafion content. Journal of Power Sources 2006 154 138-144. 

Dr. Hui has worked on various projects, including chemical sensors, solid oxide fuel cells, magnetic materials, gas separation membranes, nanostruc-tured materials, thin film fabrication, and protective coatings for metals. He has more than 80 research publications, one worldwide patent, and one U.S. patent (pending). He is currently leading and involved in several projects for the development of metal-supported solid oxide fuel cells (SOFCs), ceramic nanomaterials as catalyst supports for high-temperature PEM fuel cells, protective ceramic coatings on metallic substrates, ceramic electrode materials for batteries, and ceramic proton conductors. Dr. Hui is also an active member of the Electrochemical Society and the American Ceramic Society. 

There is increasing interest in preparing Ti02 nanomembranes both for advanced photocatalytic processes in the field of air and water purification, purification of drinking water, novel membrane for high temperature PEM fuel cells,Li-ion batteries,advanced nanoelectrode arrays (NEA) and nanofiltration and pervaporation. ... 

Zhang J, Xie Z, Zhang J, Tang Y, Song C, Navessin T, Shi Z, Song D, Wang H, Wilkinson D, Liu Z, Holdcroft S, (2006). High temperature PEM fuel cells Review. Journal of Power Sources 160 872-891... 

Figure 3.14. Percentage of cell individual voltage drop caused by charger transfer, membrane, and mass transfer resistances at different current densities and 80°C [21]. (Reproduced by permission of ECS—The Electrochemical Society, from Tang Y, Zhang J, Song C, Liu H, Zhang J, Wang H, Mackinnon S, Peckham T, Li J, McDermid S, Kozak P. Temperature dependent performance and in situ AC impedance of high-temperature PEM fuel cells using the Nafion-112 membrane.)...

Peng J, Shin JY, Song TW (2008) Transient response of high temperature PEM fuel cell. J Power Sources 179 220-231... 

The use of an alkaline fuel cell also involves an ammonia cracker, but since the electrolyte of the AEC is not sensitive to ammonia traces, the system is slightly simpler because of the elimination of the purification step. In addition, alkaline cells can run at slightly elevated temperatures (like the high-temperature PEM or higher), and they do not contain expensive platinum. AFCs could be operated with the same choice of metal ammine complex as the PEM. 

D.D. Macdonald et al., Materials for high temperature PEM Euel Cells, Workshop at Energy Institute, Pennsylvania State University, 2003... 

Numerous works have reported the decrease of hydrated Nafion conductivity at high temperature. Thus, Rikukawa and Sanui [325] observed a maximum in the conductivity of Nafion 115 around 80 °C, and a sudden drop at temperatures above 100 °C. Aric6 et al. [315] also observed a maximum conductivity around 120 °C, as shown in Fig. 6.20, for recast Nafion membranes. This behavior is the consequence of membrane dehydration at temperatures above 100 °C, which limits the use of Nafion in high temperature PEM fuel cells. 

Asensio JA, Smchez EM, G6mez-Romero P (2010) Proton-conducting membranes based on benzimidazole polymers for high-temperature PEM fuel cells. A chemical quest. Chem Soc Rev 39 3210-3239... 

Krishnan P, Park JS, Kim CS (2006) Performance of a poly(2,5-baizimidazole) membrane based high temperature PEM fuel cell in the presence of carbon mmoxide. J Power Sources... 

Gulledge AL, Gu B, Benicewicz BC (2012) A new secpience isemer of AB-polybenzimidazole for high temperature PEM fuel cells. J Polym Sci Pol Chem 50 306-313... 

Coordination polymers containing rotaxane linkers 12CSR5896. Design and synthesis of cross-Hnked poly(benzoxazine)- and polybenzimidazole-based copolymer membranes and their application to an electrolyte membrane for a high-temperature PEM fuel cell 13P77. 

Materials, Proton Conductivity and Electrocatalysis in High-Temperature PEM Fuel Cells... 

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