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Professor J R P Jayakody (BSc Peradeniya), MA, MPhil, PhD (CUNY), CPhys, FIP (SL)

	Designation	:	Head of the Department and Professor
	Spcialized Field	:	Solid State Physics
	Mailing Address	:	Department of Physics, University of Kelaniya, Kelaniya 11600, Sri Lanka
	Telephone	:	(+94) (0)11 2903346 (Office) (+94) (0)33 2272309 (Residence)
	Email	:	jrpj@kln.ac.lk

Research Interests

• Our research concerns the evaluation of materials being developed for fuel cells and lithium batteries. In polymer electrolytes for both fuel cell and lithium batteries, we investigate the dynamics of ion transport and structural properties in these disordered media by solid state NMR methods

Publications

1. SN Suarez, JRP Jayakody, TA Zawodzinski, and JJ Fontanella, A Fundamental Study of the Transport Properties of Aqueous Superacid Solutions”J. Physical Chemistry B (in press) (2008)
2. H Ye, J Huang, JJ Xu, NAC Kodiweera, JRP Jayakody, and SG Greenbaum, New membranes based on Ionic Liquid for PEM fuel cells at elevated temperatures, J. Power Sources 178, pp. 651-660 (2008)
3. JRP Jayakody, SH Chung, L Durantino, H Zhang, L Xiao, BC Benicewicz, and SG Greenbaum, NMR studies of mass transport in high-acid-content fuel cell membranes based on phosphoric acid and polybenzimidazole, J. Electrochem. Soc. 154(2) (2007)


4. Matt Petrowsky, Roger Frech, Sophia N Suarez, J Jayakody, and SG Greenbaum, Investigation of fundamental transport properties and thermodynamics in Diglym-salt solutions, J. Physical Chemistry B110, pp. 23012-23021 (2006)
5. Silvia Licoccia, M Luisa Di Vona, Alessandra D Epifonia, Debora Marani, Michele Vittadello, JRP Jayakody, and SG Greenbaum, Ormosil/SPEEK based hybrid composite proton conducting membranes, J. Electrochem. Soc. 153, pp. A1226-A1231 (2006)


6. JRP Jayakody, A Khalfan, ES Mananga, TD Dang, R Mantz, and SG Greenbaum, NMR investigation of water and methanol transport in sulfonated polyareylenethioethersulfones for fuel cell applications, J. Power Sources 156, pp. 195-199 (2006)


7. JRP Jayakody, FJ Owens, and SG Greenbaum, Characterization of Single Walled Carbon Nanotube – Polyvinylene Difluoride Composites, Composites Science and Technology 66, pp. 1280-1284 (2006)


8. JRP Jayakody, A Khalfan, ES Mananga, SH Chung, R Lopato, SG Greenbaum, Multinuclear NMR studies of mass transport of phosphoric acid in water, Proc. 10^th Asian Conference on Solid State Ionics, pp. 19-28 (2006)


9. S Suarez, J Jayakody, S Abbrent, JH Shin, S Passerini, A Multinuclear NMR study of ion transport in P(EO)_nLiBETI complexes, Solid State Ionics 176, pp. 1113 (2005)


10. JRP Jayakody, A Khalfan, ES Mananga, SG Greenbaum, TD Dang and R Mantz, NMR investigation of water and methanol transport in sulfonated polyareylenethioethersulfones for fuel cell applications, J. Power Sources 156, pp. 195-199 (2005)


11. Vito Di Noto, M Vittadello, JRP Jayakody, AN Khalfan, SG Greenbaum, Two new siloxanic proton conducting membranes part II. Proton Conducting mechanism and NMR study,Electrochimica Acta 50, pp. 4007-4014 (2005)


12. JRP Jayakody, Eugene S Mananga, and Song-Ho Chung, NMR Studies of Mass Transport in Lithium Conducting Polymer Electrolytes, San Antonio ECS Proc., Vol. 13 (2004)


13. JRP Jayakody, Ameesh Khalfan, Thuy D Dang, Zongwu Bai, and Robert A Mantz, Investigation of highly sulfonated polyarylenethioethersulfones for fuel cell Applications, Electrochem. Soc. Proc. on Polymer Electrolyte Membranes X2 (2004)


14. JRP Jayakody, PE Stallworth, E Mananga, J Zapata-Farrington, High Pressure NMR Study of Water Self-Diffusion in NAFION-117 Membrane, J. Physical Chemistry B108, pp. 4260 (2004)


15. MA Punyasena, CD Amarasekara, JRP Jayakody, PAA Perera, Construction and Commissionning of a Large-Area Salt-Gradient Solar Pond at Palatupana Salterns in Southern Sri Lanka, Proc. 19^th Tech. Sess. Inst. Phys., Sri Lanka (2003)


16. RP Wijesundera, PK Kapila Susantha, JRP Jayakody, W Siripala, Ti/Cu₂O Photoelectrodes in a Photoelectrolytic Solar Cell,Proc. 19^th Tech. Sess. Inst. Phys., Sri Lanka (2003)


17. MA Punyasena, CD Amarasekara, JRP Jayakody, PAA Perera, An Investigation of Rain and Wind Effects on Thermal Stability of Large-area Saltpan Solar Ponds, Solar Energy 74, 447 (2003)


18. JRP Jayakody, MA Punyasena, PAA Perera, CD Amarasekara, Construction and Filling of a Large-area Deep-tank Solar Pond for Harnessing Solar Energy,Proc. Annual Research Symp. 2002, University of Kelaniya (2002)


19. PAA Perera , CD Amarasekara, JRP Jayakody, MA Punyasena, Daytime Variation of Temperature and Salinity Profiles in Large-Area Saltpan Solar Ponds at Palavi, Sri Lanka, Proc. 18^th Tech. Sess. Inst. Phys., Sri Lanka (2002)


20. PAA Perera, CD Amarasekara, JRP Jayakody, MA Punyasena, A Study of Daytime Variation of Convective and Non-Convective Zones in Salt Pan Solar Ponds,Proc. Annual Research Symp. 2002, University of Kelaniya (2002)


21. MA Punyasena, PAA Perera, CD Amarasekara, JRP Jayakody, A study of wind effects on thermal stability of salt pan solar pond,Proc. Annual Research Symp. 2001, University of Kelaniya (2001)


22. PS Hewageeganage, CD Amarasekara, JRP Jayakody, MA Punyasena, Investigation of Temperature and Density Profiles of Brines in Evaporating Salt Pans at Palaviya in the North-Western Region of Sri Lanka,Proc. 16^th Tech. Sess. Inst. Phys., Sri Lanka (2001)


23. PS Hewageegana, CD Amarasekara, JRP Jayakody, MA Punyasena, A Study of Temperature and Salinity Variations with Depth in Salt Pans at Palavi in North-West Region of Sri Lanka, Proc. Annual Research Symp. 2000, University of Kelaniya (2000)


24. JRP Jayakody,Nuclear Quadrupole Resonance studies of the "SORC" sequence and Nuclear Magnetic Resonance studies of Polymers, PhD Thesis, City University of New York, USA (1993)


25. RS Chen, JRP Jayakody, SG Greenbaum, YS Pak, G Xu, MG Mclin and JJ Fontenella, Studies of water in Nafion membranes Using Deuteron and Oxygen-17 NMR, and dielectric Relaxation techniques, J. Electrochem. Soc., 140, 889 (1993)


26. MG Mclin, MC Wintersgill, JJ Fontanella, RS Chen, JRP Jayakody and SG Greenbaum, High pressure studies of hydrated Nafion membranes: Dielectric relaxation and deuteron NMR, Solid State Ionic 60, 137 (1993)


27. JRP Jayakody, RS Chen, and SG Greenbaum, Deuteron and Oxygen-17 NMR studies of molecular motion in methanol saturated Nafion membranes, Mat. Res. Soc. Vol. 293 (1993)


28. JRP Jayakody, S Bulusu and RA Marino, Correlation time for polymer chain motion near the glass transition in Nitrocellulose, Mat. Res. Soc. Vol. 296 (1993)


29. JRP Jayakody, SS Kim and RA Marino, Experimental investigations of the strong off resonant comb (SORC) pulse sequence in ¹⁴N NQR, Z. Naturforsch. 47a, pp. 415-420 (1992)


30. W Siripala and JRP Jayakody, Observation of n-type Photocunductivity in Electrodeposited Copper Oxide film Electrodes in a Photoelectrochemical cell, Solar Energy Materials 14, pp. 23 (1986)