Dr PALANI Balaya
Associate Professor

Faculty of Engineering, Block E3A, #04-23
National University of Singapore
7 Engineering Drive 1
SINGAPORE 117574

Contact: +65-6516-7644

Homepage: http://serve.me.nus.edu.sg/thermo/AESL/AESL.htm
Just after graduating (1987-1993) from the University of Hyderabad, India, in the area of Solid State Ionics, I joined at the Indian Institute of Science, Bangalore as a Research Associate (1994-1996) and worked on the thermal properties of insulating materials at low temperature. I later joined at the Inter University Consortium (Bhabha Atomic Research Centre campus) Mumbai, as a Scientist (1996-2001) and worked with neutron diffractometer to investigate the structure of amorphous materials. I was also a Visiting Fellow (2001) at the Madras University, Chennai, and involved in the investigation of transport properties of nanocrystalline materials. I then moved to the Max Planck Institute for Solid State Research, Stuttgart, Germany as a Guest Scientist (2001-2006) and worked with Prof. Joachim Maier and contributed in the areas of anomalous transport phenomenon at nano-size (mesoscopic phenomenon), energetics of nano-crystals and interfacial lithium storage. I joined as an Assistant Professor in the Faculty of Engineering, NUS in January 2007. My current research area is nano-ionics for energy systems specifically in the context of solar energy conversion as well as lithium batteries for energy storage.

Qualification
M.Phil., Ph.D.

Research Interests
o Excitonic solar cells
o Energy storage – Lithium batteries and supercapcitors
o Solid oxide fuel cells
o Electrical conduction in nanostructured materials
o Thermodynamic stability of nanomaterials
Link: in progress

Selected Publications
Selected publications

1) “6Li MAS NMR Investigation of Electrochemical Lithiation of RuO2: Evidence for an Interfacial Storage Mechanism”,
E. Bekaert, P. Balaya, S. Murugavel, J. Maier and M. Ménétrier”, Chemistry of
Materials, (in press, 2009 DOI: 10.1021/cm8028005).

2) “Storage Performance of LiFePO4 Nanoplates”,
K. Saravanan, M. V. Reddy, P. Balaya, H. Gong, B. V. R. Chowdari and J. J.
Vittal, Journal of Materials Chemistry, 19 (2009) 605.

3) “Size Effects and Nanomaterials for Energy Applications”,
P. Balaya, Perspective Review, Energy and Environmen. Sci., 1 (2008) 645.

4) “Ionic and electronic transport in single crystalline LiFePO4 grown by optical floating zone technique”
R. Amin, J. Maier, P. Balaya, D. P. Chen, and C. T. Lin, Solid State Ionics, 179
(2008) 1683.

5) “Enhanced interfacial lithium storage in nanocomposites of transition metals with LiF and Li2O: comparison of DFT calculations and experimental studies”,
Yu. F. Zhukovskii, E. A. Kotomin, P. Balaya, and J. Maier, Solid State Sciences, 10 (2008) 491.

6) “Enhanced potential of amorphous electrode materials: case study of RuO2” O. Delmer, P. Balaya, L. Kienzle, and J. Maier, Adv. Mater., 20 (2008) 501.

7) “Enhanced lithium storage in transition metal/lithium fluoride nanocomposites: Experiment and theory”
Yu. F. Zhukovskii, P. Balaya, M. Dollé, E. A. Kotomin, and J. Maier Phys. Rev. B, 76 (2007) 235414.

8) “Nanostructured Materials for Reversible Lithium Batteries”,
P. Balaya and J. Maier, Innovation, 7 (2007) 32 (cover story).

9) “Mesoscopic hole conduction in nanocrystalline SrTiO3: a detailed analysis by impedance spectroscopy”
P. Balaya, J. Jamnik, J. Fleig and J. Maier, J. Electrochem. Soc. 154 (2007) P69.

10) “Ionic and electronic transport in single crystalline LiFePO4: electrochemical AC and DC studies”
R. Amin, P. Balaya and J. Maier, Electrochem. Solid State Lett.. 10 (2007) A13.

11) “Synthesis of nanoporous crystallites with superior catalytic and capacitive activity via electrochemical lithiation”,
Y.-S. Hu, Y.-G. Guo, W. Sigle, S. Hore, P. Balaya and J. Maier, Nature Mater. 5
(2006) 713

12) “Synthesis and characterization of nanocrystalline SrTiO3”,
P. Balaya, M. Ahrens, L. Kienle, J. Maier, B. Rahmati, S.B. Lee, W. Sigle, A. Pashkin, C. Kuntscher and M. Dressel, J. Amer. Ceram. Soc. 89 (2006) 2804.

13) "Nano-ionics in the context of lithium batteries"
P. Balaya, A.J. Bhattacharyya, J. Jamnik, Yu. Zhukovskii, E. Kotomin and J.
Maier, J. Power Sources 159 (2006) 171.

14) "Mesoscopic electrical conduction in nanocrystalline SrTiO3",
P. Balaya, J. Jamnik J. Fleig and J. Maier, Appl. Phys. Lett. 88 (2006) 062109.

15) "Evidence for interfacial storage anomaly in nanocomposites for lithium batteries by first principles simulation",
Yu. Zhukovskii, P. Balaya, E. Kotomin, J. Maier, Phys. Rev. Lett. 95 (2006) 058302 (1-4) (Selected for publication in the February 20, 2006 issue of the Virtual Journal of Nanoscale Science & Technology, a weekly multi-journal compilation of the latest research on nanoscale systems).

16) "Non-Debye conductivity relaxation in a mixed glassformer system"
P. Balaya and P.S. Goyal, J. Non-Crys. Solids 351 (2005) 1573

17) "Li-storage via heterogeneous reaction in selected binary metal fluorides and oxides“,
H. Li, P. Balaya and J. Maier, J. Electrochem. Soc., 151 (2004) A1878

18) "Dielectric and conductivity studies on lead silicate glasses having mixed alkali and alkaline earth metal oxides",
P. Balaya, V.K. Shrikhande, G.P. Kothiyal, and P.S. Goyal, Current Science 86 (2004) 553

19) "Fully reversible homogeneous and heterogeneous Li-storage in RuO2 with high capacity"
P. Balaya, H. Li, L. Kienle and J. Maier, Adv. Funct. Mater. 13 (2003) 621.

20) "Grain size effect on the universality of AC conductivity in SnO2"
A.C. Bose, P. Balaya, P. Thangadurai and S. Ramansamy, J. Phys. Chem. Solids 64 (2003)659

21) “Effect of Cu-substitution on the conductivity of Ag-rich AgI-CuI solid solutions”,
P.S. Kumar, P. Balaya, P.S. Goyal and C.S. Sunandana, J. Phys. Chem. Solids 64 (2003) 961

22) “Electrical conductivity and dielectric behaviour of nanocrystalline NiFe2O4 spinel”.
N. Ponpandian, P. Balaya and A. Narayanasamy, J. Phys-Condens. Mat. 14 (2002) 3221

23) “Dielectric properties of 1 MeV electron-irradiated polyimide”,
P.S. Alegaonkar, V.N. Bhoraskar, P. Balaya and P.S. Goyal, Appl. Phys. Lett. 80 (2002)640