Prof. H.M.J.C.Pitawala

Prof. H.M.J.C.Pitawala

Professor

PhD in Materials Science (Chalmers University of Technology, Sweden)
Lic.Phil in Materials Science (Chalmers University of Technology, Sweden)
M.Sc. (Peradeniya)
BSc(Special Degree) (Peradeniya)

Email :jagath@uwu.ac.lk
Phone : +94 55 222 6676

  • Energy storage is a major requirement today than at any time in our history. New batteries, super capacitors, and fuel cells have been identified as key devices for small, medium, and large scale energy storage systems. Thus, my main research interest is studies of advanced materials, in particular those intended for energy storage and energy conversion devices.
  • In addition, I do my research on seeking value addition potentials for local minerals available in Sri Lanka. The objective of this research is to utilization of our raw materials in proper way and add value to them rather than selling them as raw form at very low prices
  • In both these areas of research, I would like to investigate how fundamental physico-chemical properties of these materials relate to their structure, architecture and interactions


Papers published in peer review journals



The Comparison of Ion Interactions in Sodium and Magnesium based Ionic Liquid Electrolytes with Al2O3 Nano-particles, M.D.M. Nayanakanthi, H.M.J.C. Pitawala, J.L. Ratnasekera, Sri Lankan Journal of Applied Sciences, Volume 1 (2022), pp. 31.


Biopolymers: Structure, properties, extraction methods and applications, M.A.S.R. Senevirathna, N.A.B. Attanayake, M.T.M.S. Chandrasiri, A.U. Asela, H.M.J.C. Pitawala, Sri Lankan Journal of Applied Sciences, Volume 1 (2022), pp. 18.


Synthesis, electrochemical and optical studies of poly(ethylene oxide) based gel-polymer electrolytes for sodium-ion secondary batteries, M. Menisha, S.L.N. Senavirathna, K. Vignarooban, N. Iqbal, H.M.J.C. Pitawala, A.M. Kannan, Solid State Ionics, Volume 371 (2021), pp. 115755.


Development of Bone Ash from Eppawala Apatite-Sri Lanka as a Raw Material for Bone China Production, I.A. Balasooriya, H.M.J.C Pitawala, Journal of the Geological Society of Sri Lanka, Volume 22 (2021), pp 51.


Chemical, mechanical, thermal analysis of a nano ceramic embedded novel composite material for automotive and industrial applications, H.K.G.K.D.K Hapuhinna, R.D. Gunaratne, H.M.J.C Pitawala, International Journal of Scientific and Research Publications, Volume 10 (2020), pp. 909.


Plastics in surface water of southern coastal belt of Sri Lanka (Northern Indian Ocean): Distribution and characterization by FTIR, A.M.A.I.K. Athapaththu, G.G.N. Thushari, P.C.B. Dias, A.P. Abeygunawardena, K.P.U.T. Egodauyana, N.P.P. Liyanage, H.M.J.C. Pitawala, J.D.M. Senevirathna, Marine Pollution Bulletin,Volume 161 Part A (2020), pp 111750.


A ceramic composite derived from high-grade rock phosphate as a substitution for human bone, Kalinga Hapuhinna, Rajitha Deshapriya Gunaratne, Jagath Pitawala, Materials Technology, Volume 34 (2019), pp 743.


Synthesis of Hydroxyapatite 2-Hydroxyethyl Methacrylate Blended Material for Dentistry, H. M. J. C. Pitawala, H. K. G. K. D. K. Hapuhinna, R. D. Gunaratne, Advances in Complementary & Alternative medicine, Volume 4, (2019), pp 599.


Comparison between differently synthesized hydroxyapatite composites for dentistry applications, H. M. J. C. Pitawala, H. K. G. K. D. K. Hapuhinna, R. D. Gunaratne, International Journal of Scientific and Research Publications, Volume 7, (2019), pp 260.


A Composite Developed from a Methyl Methacrylate and Embedded Eppawala Hydroxyapatite for Orthopedics, H. M. J. C. Pitawala, H. K. G. K. D. K. Hapuhinna, R. D. Gunaratne, Journal of Materials and Metallurgical Engineering, Volume 13, (2019), pp 270.


Comparison between Differently Synthesized Hydroxyapatite Composites for Orthopedic Applications Kalinga Hapuhinna, Rajitha Gunaratne, Jagath Pitawala, Journal of Materials Science and Chemical Engineering Volume 7 (2019).


Synthesis of bone cement from a natural mineral for biomedical industry, H. K. G. K. D. K. Hapuhinna, R. D. Gunaratne, H.M.J.C.Pitawala, International Journal of Scientific and Research Publications Volume 9, (2019), pp. 8872.


A novel approach of synthesizing 2-hydroxyethyl methacrylate embedded hydroxyapatite composites for dentistry applications, H. M.J.C. Pitawala, H. K. G. K. D. K. Hapuhinna, R. D. Gunaratne International Journal of Engineering Research and Applications Volume 9 (2019), pp. 51.


Ionic conductivity and interactions in Sodium ion conducting solid polymer electrolytes based on poly(ethylene oxide), V.A. Senevirathne, H.M.J.C. Pitawala, W.A.A.E.B. Wanithunga, J.L. Rathnasekara, Journal of Technology and Value Addition Volume 1 (2019), pp.1.


Fabrication and evaluation of an electrochemical double-layer capacitor with natural graphite electrodes and magnesium trifluoromethanesulfonate–based gel polymer electrolyte, Karunarathne, K.A.J.K., Perera, K.S., Vidanapathirana, K.P., Jagath C. Pitawala, J Solid State Electrochem 23 (7) (2019), pp. 2165-2171.


Plasmonic effects of quantum size metal nanoparticles on dye-sensitized solar cell, A. K. Arof S Shah, I. M. Noor, J. Pitawala, I. Albinson, T. M. W. J. Bandara, and B-E Mellander, Optical Materials Express, vol. 7 (6) (2017), pp. 2069-2083.


Polyethylene oxide and ionic liquid-based solid polymer electrolyte for rechargeable magnesium batteries, H. N. M. Sarangika, M. A. K. L. Dissanayake, G. K. R. Senadeera, R. R. D. V. Rathnayake, and H. M. J. C. Pitawala, Ionics, vol. 23 (10) (2016), pp. 2829-2835.


Effect of Water on the Local Structure and Phase Behavior of Imidazolium-Based Protic Ionic Liquids, Negin Yaghini, Jagath Pitawala, Aleksandar Matic, and Anna Martinelli, The Journal of Physical Chemistry B, vol. 119 (4) (2015), pp. 1611-1622.


Coordination and interactions in a Li-salt doped ionic liquids, Jagath Pitawala, Anna Martinelli, Patrik Johansson, Per Jacobsson, and Aleksandar Matic, Journal of Non-Crystalline Solids, vol. 407 (2015), pp. 318-323.


Structure and properties of Li-ion conducting polymer gel electrolytes based on ionic liquids of the pyrrolidinium cation and bis(trifluoromethanesulfonyl)imide anion, Jagath Pitawala, Maria Assunta Navarra, Bruno Scrosati, Per Jacobsson, and Aleksandar Matic, The Journal of Power Sources, vol. 245 (2014), pp. 830-835.


Physical properties, ion-ion interactions, and conformational states of ionic liquids with alkyl- phosphonate anions, Jagath Pitawala, Johan Scheers, Per Jacobsson, and Aleksandar Matic, The Journal of Physical Chemistry B, vol. 117 (27) (2013), pp. 8172-8179.


A new class of ionic liquids: anion amphiprotic ionic liquids, Marcel Treskow, Jagath Pitawala, Sven Arenz, Aleksandar Matic, and Patrik Johansson, The Journal of Physical Chemistry Letters, vol. 3 (16) (2012), pp. 2114-2119.


Phase behaviour, transport properties, and interactions in Li-salt doped ionic liquids, Jagath Pitawala, Jea-Kwang Kim, Per Jacobsson, Victor Koch, Fausto Croce, and Aleksandar Matic, Faraday Discussions, vol. 154 (2012), pp. 71-80.


Ionic liquids and oligomer electrolytes based on the B(CN)4- anion; ion association, physical and electrochemical properties, Johan Scheers, Jagath Pitawala, Frederic Thebault, Jae-Kwang Kim, Jou-Hyeon Ahn, Aleksandar Matic, Patrik Johansson, and Per Jacobsson, Physical Chemistry Chemical Physics, vol. 13 (2011), pp. 14953-14959.


Properties of N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl) imide based electrolytes as a function of lithium bis(trifluoromethanesulfonyl)imide doping, Jae-Kwang Kim, Du-Hyun Lim, Johan Scheers, Jagath Pitawala, Susanne Wilken, Patrik Johansson, Jou-Hyeon Ahn, Aleksandar Matic, and Per Jacobsson, Journal of the Korean Electrochemical Society, vol. 14 (2) (2011), pp. 92-97.


Thermal properties and ionic conductivity of imidazolium bis(trifluoromethanesulfonyl)imide dicationic ionic liquids, Jagath Pitawala, Aleksandar Matic, Anna Martinelli, Per Jacobsson, Victor Koch, and Faustro Croce, The Journal of Physical Chemistry B, 113, 10607 (2009). vol. 113 (31) (2009), pp. 10607-10610.


Thermal and dielectric properties of PEO/EC/Pr4N+I- polymer electrolytes for possible applications in photo-electro chemical solar cells, T. M. W. J. Bandara, B. -E. Mellander, I. Albinson, M. A. K. L. Dissanayake, and H. M. J. C. Pitawala, Journal of Solid State Electrochemistry, vol. 13 (8) (2009), pp. 1227-1232.


Effect of plasticizers (EC or PC) on the ionic conductivity and thermal properties of the (PEO)9LiTf :Al2O3 nanocomposite polymer electrolyte system, H.M.J.C. Pitawala, M.A.K.L. Dissanayake, V.A. Seneviratne, B.-E. Mellander, and I. Albinson, Journal of Solid State Electrochemistry, vol. 12 (7) (2008), pp. 783-789.


Combined effect of Al2O3 nano-fillers and EC plasticizer on ionic conductivity enhancement in the solid polymer electrolyte (PEO)9LiTf, H.M.J.C. Pitawala, M.A.K.L. Dissanayake, and V.A. Seneviratne, Solid State Ionics, vol. 178 (13-14) (2007), pp. 885-888.



Conference /Symposium papers (full paper published)



Conductivity and thermal studies on plasticized nano-composite solid polymer electrolyte, PEO: EC: LiTf: Al2O3.
H. M. J. C. Pitawala, M. A. K. L. Dissanayake, and V. A. Seneviratne.
Proceedings of the 10th Asian Conference on Solid State Ionics, World Scientific., Singapore, 585-592
(2006).



Effect of nano-porous alumina filler on thermal and electrical transport properties of solid polymer electrolyte (PEO)12LiBF4.
H.M.J.C. Pitawala, M.A.K.L. Dissanayake, V.A. Seneviratne, B.-E. Mellander, and I. Albinson.
Proceedings of the 12th Asian Conference on Solid State Ionics, World Scientific., Singapore, 635-643.
(2008).


Citation overview (from Scopus)



From the papers published in peer review journals, there is a citation overview for a set of 25 documents.
Total citations (until to date) = 875 h index = 13 h i-index = 16



Published thesis



Physical Properties and Interactions of Ionic Liquids and Ionic Liquid Li-salt Mixtures.
Jagath Pitawala, Department of Applied Physics, Chalmers University of Technology,
SE-412 96, Gothenburg, Sweden. Thesis for the degree of Doctor of Philosophy (Ph.D).
ISBN 978-91-7385-768-0, (2012).



Unpublished thesis



Structure-Property Relationship of Ionic Liquids and Their Lithium Salt Mixtures. Jagath Pitawala, Department of Applied Physics, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden. Thesis for the Degree of Licentiate of Philosophy (Lic.Phil), (2010).


Synthesis and Characterization of some PEO-based, nano composite polymer electrolytes. H.M.J.C. Pitawala, Department of Physics and Postgraduate Institute of Science, University of Peradeniya, Sri Lanka. Thesis for the Degree of Master of Philosophy (M.Phil), (2008).


Thermal and Transport Properties of Mg-ion Conducting Solid Polymer Electrolytes. H.M.J.C. Pitawala, Department of Physics, University of Peradeniya, Sri Lanka. Thesis for the Degree of Bachelor of Science (B.Sc), (2002).



Abstracts for International Conferences



Structure and properties of Li-ion conducting polymer gel electrolytes based on ionic liquids of the pyrrolidinium cation and bis(trifluoromethanesulfonyl)imide anion.
Jagath Pitawala, Maria Assunta Navarra, Bruno Scrosati, Per Jacobsson, and Aleksandar Matic.XIII International Symposium on Polymer Electrolytes, ISPE-13, Selfoss, Iceland, 26-31 August 2012.


Influence of Li-salt doping on the properties of ionic liquid based gel electrolytes.Aleksandar Matic, Jagath Pitawala, Luis Aguilera, Jonas Nordström, and Per Jacobsson. Ionic Liquids for Electrochemical Devices-ILED 3, Rome, Italy, May 30-June 1, 2012.


Characterization of gel polymer electrolytes for safer Li-batteries.
Luis Aguilera, Jagath Pitawala, Maria Assunta Navarra, Lucia Lombardo, Stefania Panero, Ida Meschini, Fausto Croce, Per Jacobsson, and Aleksandar Matic. 16th International Meeting on Lithium Batteries, Jeju, Korea, 17-22 June 2012.


Physicochemical properties and interactions of alkyl-phosphonate ionic liquids.Jagath Pitawala, Aleksandar Matic, and Per Jacobsson. Faraday Discussion 154:Ionic Liquids, Belfast, UK, 22-24 August 2011.


B(CN)4– as a component of ionic liquids, alkali salts, and lithium battery electrolytes. Johan Scheers, Jagath Pitawala, Frederic Thebault, Jae-Kwang Kim, Patrik Johansson Aleksandar Matic, and Per Jacobsson. 18th International Conference Solid State Ionics, Warsaw, Poland, 3-8 July 2011.


New ampholytic ionic liquids as proton conductors in fuel cells.
Marcel Treskow, Jagath Pitawala, Aleksander Matic, and Patrik Johansson. 4th Congress on Ionic Liquids, Washington DC, USA, June 15-18 2011.


Influence of Li-ion transporting species on ionic conductivity in LiTFSI doped N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide ionic liquid.Jagath Pitawala, Aleksandar Matic, Patrik Johansson, and Per Jacobsson. 4th Congress on Ionic Liquids, Washington DC, USA, June 15-18 2011.


Transport properties of LiTFSI doped dicationic ionic liquids. H.M.J.C. Pitawala, P. Jacobsson, V.R. Koch, F. Croce, and A. Matic. Ionic Liquids for Electrochemical Devices-ILED 2, Rome, Italy, June 9-11, 2010.


Phase behaviour, transport properties and coordination in Li-salt doped ionic liquids. Matic, H.M.J.C. Pitawala, J.K.Kim, P. Jacobsson, and P. Johansson. Ionic Liquids for Electrochemical Devices-ILED 2, Rome, Italy, June 9-11, 2010.


Conductivity, ionic clusters, and interface reactions in ionic liquids for electrochemical applications.Martinelli, Y. Getman, Jagath Pitawala, N. Sergent, Cristina Iojoiu, N. Rosman, Thierry Pagnier, Jean-Yves Sanchez, and Aleksandar Matic. 6th International Discussion Meeting on Relaxations in Complex Systems-IDMRCS 6, Rome, Italy, 30 August-5th September 2009.


Thermal properties, ionic conductivity and conformation of imidazolium
bis(trifluoromethylsulfonyl)imide dicationic ionic liquids. Jagath Pitawala, Faustro Croce, Per Jacobsson, Victor Koch , Anna Martinelli, and Aleksandar Matic. 3rd Congress on Ionic Liquids, Cairns, Australia, May 31-June 4, 2009.


Lithium ion solvation in the N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (PyR14TFSI) ionic liquid. Jagath Pitawala, Anna Martinelli, Patrik Johanson, Per Jacobsson, and Aleksandar Matic. 3rd Congress on Ionic Liquids, Cairns, Australia, May 31-June 4, 2009.


Raman spectroscopy studies on TFSI– based Ionic Liquids. H. M. J. C. Pitawala, A. Martinelli, P. Jacobsson, and A. Maic. Ionic Liquids for Electrochemical Devices-ILED 1, Rome, Italy, June 9-11, 2008.


Effect of nano-porous alumina filler on thermal and electrical transport properties of solid polymer electrolyte (PEO)12LiBF4. H.M.J.C. Pitawala, M.A.K.L. Dissanayake, V.A. Seneviratne, B.E. Mellander, and I. Albinson. International Conference on Smart Materials and Nanotechnology and 2nd International Workshop on Functional Materials and Nanomaterials (SmartMat-08 & IWOFM-2), Chiang Mai, Thailand, 22-25 April 2008.


Effect of plasticizers (EC / PC) on the ionic conductivity and thermal properties of the (PEO)9LiTf: Al2O3 nanocomposite polymer electrolyte system. H. M. J. C. Pitawala, M. A. K. L. Dissanayake, V. A. Seneviratne, B. -E. Mellander, and I. Albinson. International Conference on Materials for Advanced Technologies (ICMAT), Singapore, July 1-6, 2007.


Role of different types of ceramic nano-fillers on plasticized and plasticizer–free, solid polymer electrolytes. H. M. J. C. Pitawala, K. Vignarooban, M. A. K. L. Dissanayake, and V. A. Seneviratne. ICTP-NCNST-ICTS Asian/Pacific Regional College on “Science at the Nanoscale”, Beijing, P.R.
China, 14-25 August 2006.



Abstracts for National Conferences



Ionic conductivity enhancement in the (PEO)9LiCF3SO3:EC polymer electrolyte due to addition of nano-size Al2O3. H. M. J. C. Pitawala, M. A. K. L. Dissanayake, and V. A. Seneviratne. Annual Research Sessions, University of Peradiniya, Peradeniya, Sri Lanka, 2005.


Plasticized and plasticizer-free, nano-composite polymer electrolytes for rechargeable Li-ion batteries. H. M. J. C. Pitawala, K. Vignarooban, and M. A. K. L. Dissanayake. Proceedings of the 62nd Annual Scientific Sessions, Section E1/523, Sri Lanka Association for the Advancement of Science (SLAAS), 2006.


Thermal, dielectric, and transport properties of plasticized and plasticizer-free, nano-composite polymer electrolytes. H. M. J. C. Pitawala, K. Vignarooban, and M. A. K. L. Dissanayake. Presented as a poster at the 10th Anniversary of Postgraduate Institute of Science, University of Peradiniya, Peradeniya, Sri Lanka.


The effect of Zirconia (ZrO2) nano fillers on the ionic conductivity of PEO:LiClO4 polymer electrolytes. B. G. H. Pushpawela, H. M. J. C. Pitawala, V. A. Seneviratne, and M. A. K. L. Dissanayake. Proceedings of the Annual Research Sessions, University of Peradiniya, Peradeniya, Sri Lanka, 2006.


Polyethylene Oxide (PEO) based, anion conducting solid polymer electrolyte for possible use PEC solar cells. M. A. K. L. Dissanayake, O. A. Ileperuma, T. M. W. J. Bandara, K. Varaprathan, H. M. J. C. Pitawala, and K. Vignarooban. Proceedings of the Annual Research Sessions, University of Peradiniya, Peradeniya, Sri Lanka, 2006.


Ionic liquids as advanced electrolyte materials for electrochemical devices. H. M. J. C. Pitawala, A. Martinelli, P. Jacobsson, and A. Matic Student workshop, Graduate School in Soft Matter Science, Chalmers University of Technology, Sweden, 2008.


Physicochemical properties and interactions of alkyl-phosphonate ionic liquids. Jagath Pitawala, Aleksandar Matic, and Per Jacobsson. 1st Avancell Conference, Materials for Tomorrow, Material Science Area of Advance, Chalmers University of Technology, Sweden, 2011.


B(CN)4- based ionic liquids, salts, and lithium battery electrolytes. J. Scheers, J. Pitawala, F. Thebault, J.-K. Kim, P. Johansson, A. Matic, J. -H. Ahn, and P. Jacobsson. 1st Avancell Conference, Materials for Tomorrow, Material Science Area of Advance, Chalmers University of Technology, Sweden, 2011.


Characterization of gel polymer electrolytes for safer Li-batteries. Luis Aguilera, Jagath Pitawala, Maria Assunta Navarra, Lucia Lombardo, Stefania Panero, Ida Meschini, Fausto Croce, Per Jacobsson, and Aleksandar Matic. Chalmers Annual Materials Science Initiative Seminar & The Division of Surface Chemistry and Materials Chemistry Annual Symposium, Material Science Area of Advance, Chalmers University of Technology, Sweden, 2012.


Coordination and interactions in LiTFSI doped N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PyR14TFSI) ionic liquid. Jagath Pitawala, Anna Martinelli, Patrik Johansson, Per Jacobsson, and Aleksandar Matic. Chalmers Annual Materials Science Initiative Seminar & The Division of Surface Chemistry and Materials Chemistry Annual Symposium, Material Science Area of Advance, Chalmers University of Technology, Sweden, 2012.



Patents



National Patent (19806) – A novel composition for a body mixture from waste Cathode Ray Tube glass for using in clay tile including roof tile, wall tile and the method for producing the same. (Received) /span>


National Patent (LK/P/20351) – Process of synthesizing Hydroxyapatite ceramic powder derived from Eppawala High Grade Rock Phosphate as a raw material with Sol gel Technique using Alcoholic route. (Received)/span>


Certificate of commendation from National Science Foundation (NSF) under NSF Research Awards 2010 in the field of Basic Sciences for my M.Phil research project.

UWU research awards 2014 – researcher having the highest citations in 2014.

NRC Merit Award for Scientific Publication-2015

UWU research awards 2015 – Scientific Publication in an indexed journal.

Business Solution Award 2015 (First place) from UBL unit, UWU-Supervised the research project.

UWU research awards 2016 – researcher having the highest citations in 2016.

UWU research awards 2016 – Scientific Publication in an indexed journal.

UWU research awards 2017 – researcher having the highest citations in 2017.

UWU research awards 2017 – Scientific Publication in an indexed journal.

Certificate of Recognition-Tier 4 Researcher (Applied Sciences) as per the UGC circular No. 05/2018

  • Properties of Matter-100 Level
  • Structural Properties of Materials-300 Level
  • Materials Physics-300 Level
  • Ceramic Science & Technology-300 Level
  • Glass Science & Technology- 300 Level
  • Materials Science & Technology Laboratory-400 Level