Dr. Akhila Kumar Sahu

Scientist, Central Electrochemical Research Institute (CECRI) and Assistant Professor at Academy of Scientific and Innovative Research

Photo_AKSahu

Area of expertise: Materials Science, electrochemistry, proton conducting membranes, nano-porous materials, functionally superior electrocatalysts, polymer electrolyte fuel cells (single cells and stacks), Direct methanol fuel cells.

  • Synthesis of nano-porous carbonaceous materials for fuel cell electrodes for better reactant permeability and water management.
  • Non-precious metal catalyst for efficient oxygen reduction reaction.
  • Nafion based composite membranes by sol-gel / co-assembly route for polymer electrolyte fuel cell operation at elevated temperature and low relative humidity.
  • Non-Nafion based polymer blend/composite membranes for PEFC and methanol barrier DMFC applications.
  • Synthesis and characterization of ceramic powders, bulk materials and coatings for various applications.

 

PROFILE:

  • Scientist at CSIR-CECRI Madras Unit, Chennai (28-03-2011 – till date)
  • Post Doctoral Researcher, DGIST, Daegu, South Korea (01-06-2012 – 31-05-2013)
  • Junior Scientist at CSIR-CECRI Madras Unit, Chennai (28-03-2008 – 27-03-2011)
  • Research Associate at CSIR-CECRI-Madras Unit (16-10-2006 to 27-03-2008)
  • Doctor of Philosophy (Chemistry): University of Madras, 2009
  • Master of Technology (Surface Science and Engineering): National Institute of Technology (NIT), Jamshedpur, 2002.
  • Master of Science (Chemistry):  Berhampur University, Berhampur, 1999.

LIST OF PUBLICATIONS:

  1. A. K. Sahu, G. Selvarani, S. Pitchumani, P. Sridhar and A. K. Shukla, A Sol-Gel Modified Alternative Nafion-Silica Composite Membrane For Polymer Electrolyte Fuel Cells,  J. Electrochem. Soc., 154 (2007) 123-132.
  1. A. K. Sahu, G. Selvarani, S. Pitchumani, P. Sridhar and A. K. Shukla, Ameliorating Effect of Silica Addition in the Anode-Catalyst Layer of the Membrane Electrode Assemblies for Polymer Electrolyte Fuel Cells, J. App. Electrochem., 37 (2007) 913-919.
  1. A. K. Sahu, G. Selvarani, S. Pitchumani, P. Sridhar, A. K. Shukla, N. Narayanan, A. Banerjee and N. Chandrakumar, PVA-PSSA Membrane with Interpenetrating Networks and its Methanol Crossover Mitigating Effect in DMFCs, J. Electrochem. Soc., 155 (2008) 686-695.                                            
  2. A. K. Sahu, G. Selvarani, S. D. Bhat, S. Pitchumani, P. Sridhar, A. K. Shukla, N. Narayanan, A. Banerjee and N. Chandrakumar, Effect of varying poly(styrene sulfonic acid) content in poly(vinyl alcohol)-poly(styrene sulfonic acid) blend membrane and its ramification in hydrogen-oxygen polymer electrolyte fuel cells, J. Membr. Sci., 319 (2008) 298-305.
  1. A. K. Sahu, K. G. Nishanth, G. Selvarani, P. Sridhar, S. Pitchumani and A. K. Shukla, Polymer electrolyte fuel cells employing electrodes with gas-diffusion layers of the mesoporous carbon derived from a sol-gel route, Carbon, 47 (2009) 102-108.
  1. A. K. Sahu, S. Pitchumani, P. Sridhar and A. K. Shukla, Co-assembly of a Nafion/Mesoporous Zirconium Phosphate Composite Membrane for PEM Fuel Cells, Fuel Cells, 9 (2009) 139-147.
  1. A. K. Sahu, S. Pitchumani, P. Sridhar, and A. K. Shukla, Nafion and modified-Nafion membranes for polymer electrolyte fuel cells: An overview, Bull. Mater. Sci. 32 (2009) 1-10.
  1. G. Selvarani, A. K. Sahu, N. A. Choudhury, P. Sridhar, S. Pitchumani and A. K. Shukla, A phenyl-sulfonic acid anchored carbon-supported platinum catalyst for polymer electrolyte fuel cell electrodes, Electrochim. Acta, 52 (2007) 4871-4877.
  1. G. Selvarani, A. K. Sahu, P. Sridhar, S. Pitchumani and A. K. Shukla, Effect of   diffusion-layer porosity on the performance of polymer electrolyte fuel cells, J. Appl. Electrochem., 38 (2008) 357-362.
  1. G. Selvarani, S. K. Prashant, A. K. Sahu, P. Sridhar, S. Pitchumani and A. K. Shukla, A direct borohydride fuel cell employing Prussian Blue as mediated electron-transfer hydrogen peroxide reduction catalyst, J. Power Sources, 178 (2008) 86-91.
  1. G. Selvarani, A. K. Sahu, G. V. M. Kiruthika, P. Sridhar, S. Pitchumani and A. K. Shukla, PEFC Electrode with Enhanced Three-Phase Contact and Built-In Supercapacitive Behavior, J. Electrochem. Soc., 156 (2009) 118-125.
  1. S. D. Bhat, A. Manokaran, A. K. Sahu, S. Pitchumani, P. Sridhar and A. K. Shukla, Novel Self-Supported Natural and Synthetic Polymer Membranes for Air Humidification, J. Appl. Polym. Sci., 113 (2009) 2605-2612.
  1. S. D. Bhat, A. K. Sahu, C. George, S. Pitchumani, P. Sridhar, N. Chandrakumar, K. K. Singh, N. Krishna and A.K. Shukla, Composite membranes with mordenite-incorporated PVA-PSSA for DMFCs, J. Membr. Sci., 340 (2009) 73-83.
  1. S. Mohanapriya, S. D. Bhat, A. K. Sahu, S. Pitchumani, P. Sridhar and A. K. Shukla, A new mixed matrix membrane for DMFCs, Energy Environ. Sci., 2 (2009) 1210-1216.
  1. A. K. Sahu, S. D. Bhat, S. Pitchumani, P. Sridhar, V. Vimalan, C. George, N. Chandrakumar and A. K. Shukla, Novel organic-inorganic-composite polymer-electrolyte-membranes for DMFCs, J. Membr. Sci. 345 (2009) 305-314.
  1. A. K. Sahu, P. Sridhar and S. Pitchumani, Mesoporous carbon for polymer electrolyte fuel cell electrodes, J. Indian Institute of Science, 89:4 (2009) 437-445.
  1. S. D. Bhat, A. K. Sahu, A. Jalajakshi, S. Pitchumani, P. Sridhar, C. George, A. Banerjee, N. Chandrakumar, and A. K. Shukla, PVA-SSA-HPA Mixed-Matrix-Membrane Electrolytes for DMFCs, J. Electrochem. Soc., 157 (2010) B1403-B1412.
  1. S. Mohanapriya, S. D. Bhat, A. K. Sahu, A. Manokaran, S. Pitchumani, P. Sridhar, and A. K. Shukla, Modified-Bio-Polymeric-Mixed-Matrix-Membrane Electrolytes for Direct Methanol Fuel Cells, J. Bionanoscience, 3 (2009) 1-8.
  1. S. Mohanapriya, S. D. Bhat, A. K. Sahu, A. Manokaran, R. Vijayakumar, S. Pitchumani, P. Sridhar and A. K. Shukla, Sodium-alginate-based proton-exchange membranes as electrolytes for DMFCs, Energy Environ. Sci., 3 (2010) 1746-1756.
  1. K. K. Tintula, A. K. Sahu, A. Shahid, S. Pitchumani, P. Sridhar and A. K. Shukla, Mesoporous Carbon and Poly (3, 4-ethylenedioxythiophene) Composite as Catalyst Support for Polymer Electrolyte Fuel Cells, J. Electrochem. Soc., 157 (2010) B1679-B1685.
  1. A. Manokaran, A. Jalajakshi, A. K. Sahu, P. Sridhar, S. Pitchumani and A. K. Shukla, Design and development of a self-supported PEFC system with anodic-dead-end operation, J. Power and Energy, 225 (2011) 175-182.
  1. K. K. Tintula, A. K. Sahu, A. Shahid, S. Pitchumani, P. Sridhar, and A. K. Shukla, Directed Synthesis of MC-PEDOT Composite Catalyst-Supports for Durable PEFCs, J. Electrochem. Soc., 158 (2011) B622-B631.                                                                                                                                               
  2. S. Alwin, S. D. Bhat, A. K. Sahu, A. Jalajakshi, P. Sridhar, S. Pitchumani, and A. K. Shukla, Modified-       Pore-Filled-PVDF-Membrane Electrolytes for Direct Methanol Fuel Cells, J. Electrochem. Soc., 158 (2011) B91-B98.                                                                                                                          
  3. S. Mohanapriya, A. K. Sahu, S. D. Bhat, S. Pitchumani, P. Sridhar, C. George, N. Chandrakumar and A. K. Shukla, Bio-Composite Membrane Electrolytes for Direct Methanol Fuel Cells, J. Electrochem. Soc., 158 (2011) B1319-B1328.
  1. K. K. Tintula, A. K. Sahu*, S.D.Bhat, S. Pitchumani, P. Sridhar, Catalytic activity of dendrimer encapsulated Pt nanoparticles anchored onto carbon towards oxygen reduction reaction in polymer electrolyte fuel cells, Appl. Catal. B: Environmental, 110 (2011) 178-185.                                                        
  2. S. Meenakshi, S. D. Bhat, A. K. Sahu, P. Sridhar, S. Pitchumani, A. K. Shukla, Chitosan-Polyvinyl Alcohol-   Sulfonated Polyethersulfone Mixed-Matrix Membranes as Methanol-Barrier Electrolytes for DMFCs, J. Appl.  Polym. Sci., 124 (2012) E73-E82.  
  1. A. K. Sahu, A. Jalajakshi, S. Pitchumani, P. Sridhar and A. K. Shukla,Endurance of Nafion-composite membranes in PEFCs operating at elevated temperature under low relative-humidity, J. Chemical Science, 124 (2012) 529-536.
  1. S. Meenakshi, S. D. Bhat, A. K. Sahu, S. Alwin, P. Sridhar and S. Pitchumani, Natural and synthetic solid polymer hybrid dual network membranes as electrolytes for direct methanol fuel cells, J. Solid State Electrochem., 16 (2012) 1709-1721.
  1. A. K. Sahu, S. Meenakshi, S. D. Bhat, A. Shahid, P. Sridhar, S. Pitchumani and A. K. Shukla, Meso-structured silica-Nafion hybrid membranes for direct methanol fuel cells, J. Electrochem. Soc., 159 (2012) F702-F710.
  1. S. Meenakshi, A.K. Sahu, S.D. Bhat, P. Sridhar, S. Pitchumani, A.K. Shukla, Mesostructured-aluminosilicate-Nafion hybrid membranes for direct methanol fuel cells, Electrochim. Acta, 89 (2013) 3544.
  1. K. K. Tintula, A. Jalajakshi, A. K. Sahu, S. Pitchumani, P. Sridhar, A. K. Shukla, Durability of Pt/C and Pt/MC-PEDOT Catalysts under Simulated Start-Stop Cycles in Polymer Electrolyte Fuel Cells, Fuel Cells, 13 (2013) 158-166.                                                                                                                                   
  2. S. Gouse Peera, K.K. Tintula, A.K. Sahu*, S. Shanmugam, P. Sridhar, S. Pitchumani, Catalytic activity of Pt anchored onto graphite nanofiber-poly (3, 4-ethylenedioxythiophene) composite towards oxygen reduction reaction in polymer electrolyte fuel cells, Electrochim. Acta, 108 (2013) 95-103.
  1. Modified sulfonated poly (ether ether ketone) based mixed matrix membranes for direct methanol fuel cells, S. Meenakshi, S.D. Bhat, A.K. Sahu, P. Sridhar, S. Pitchumani,  Fuel Cells, 13 (2013) 851-861.            
  2. O. Kwon, S. C. Lee, D. H. Lee, A.K. Sahu, S. Shanmugam, M. H. Kim, S. Park, Anhydrous proton conductivity hybrid proton exchange membrane by phase mode atomic force microscopy, ECS Transactions, 58 (2013) 1005-1011.
  3. S. Gouse Peera, A. K. Sahu*, S. D. Bhat and S.C. Lee, Nitrogen functionalized graphite nanofibers/Ir nanoparticles for enhanced oxygen reduction reaction in polymer electrolyte fuel cells (PEFCs), RSC Adv., 4 (2014) 11080-11088.
  4. Sobi Thomas, Sang C. Lee, A. K. Sahu, Sam Park, Online health monitoring of a fuel cell using total harmonic distortion analysis, Int. J. Hydrogen Energy, 39 (2014) 4558-4565.
  5. S. Sasikala, S. Meenakshi, S.D. Bhat, A. K. Sahu, Functionalized Bentonite clay-sPEEK based composite membranes for direct methanol fuel cells, Electrochim. Acta, 135 (2014) 232-241.
  6. S. Meenakshi, A. Manokaran, S. D. Bhat, A. K. Sahu, P. Sridhar, S. Pitchumani, Impact of Mesoporous and Microporous Materials on Performance of Nafion and SPEEK Polymer Electrolytes: A Comparative Study in DEFCs, Fuel Cells, 14 (2014) 842-852.
  7. A. Arunchander, K. G. Nishanth, K. K. Tintula, S. Gouse Peera, A. K. Sahu*, Insights into the effect of structure directing agents on structural properties of mesoporous carbon for polymer electrolyte fuel cells, Bull. Mater. Sci. 38 (2015) 1-9.
  8. S. Gouse Peera, A. K. Sahu*, A. Arunchander, S.D. Bhat, J. Karthikeyan, P. Murugan, Nitrogen and Fluorine co-doped graphite nanofibers as high durable oxygen reduction catalyst in acidic media for polymer electrolyte fuel cells, Carbon, 93 (2015) 130-142.
  9. S. Gouse Peera, A. K. Sahu*, A. Arunchander, Krishna Nath, S.D. Bhat, Deoxyribonucleic acid directed metallization of Platinum nanoparticles on graphite nanofibers as a durable oxygen reduction catalyst for polymer electrolyte fuel cells, J. Power Sources, 297 (2015) 379-387.
  10. A. Arunchander, S. Gouse Peera, V. Parthiban, Srinu Akula, Tintula Kottakkat, Santoshkumar D. Bhat and Akhila Kumar Sahu*, Dendrimer Confined Pt Nanoparticles: Electro-Catalytic Activity towards Oxygen Reduction Reaction and its Application in Polymer Electrolyte Membrane Fuel Cells, RSC Adv.5 (2015) 75218-75228.
  11. S. Sasikala, S. Vinod Selvaganesh, A. K. Sahu*, A. Carbone, E. Passalacqua, Block co-polymer templated mesoporous carbon-Nafion hybrid membranes for polymer electrolyte fuel cells under reduced relative humidity, J. Membr. Sci., 499 (2016) 503-514.
  12. Sobi Thomas, Alex Bates, Sam Park, A. K. Sahu, Sang C. Lee, Byung Rak Son, Joo Gon Kim, and Dong-Ha Lee, An Experimental and Simulation Study of Novel Channel Designs for Open- Cathode High-Temperature Polymer Electrolyte Membrane Fuel Cells, Applied Energy, 165 (2016) 765–776.
  13. V. Parthiban, Srinu Akula, S. Gouse Peera, Nazrul Islam, A. K. Sahu*, Proton Conducting Nafion-Sulfonated Graphene Hybrid Membranes for Direct Methanol Fuel Cells with Reduced Methanol Crossover, Energy & Fuels, 30 (2016) 725–734.

LIST OF PATENTS:

 1.    A. K. Sahu, G. Selvarani, S. Pitchumani, P. Sridhar and A. K. Shukla, Process for the preparation of sol-gel modified alternative Nafion-Silica composite membrane useful for polymer electrolyte fuel cell, US Patent Pub. No: US 2012/0141915A1, June 7, 2012.

2.       A. K. Shukla, S. Pitchumani, P. Sridhar, A. K. Sahu, G. Selvarani and S.K.     Prashant, Proton conducting polymer electrolyte membrane useful in polymer electrolyte fuel cells, International publication number: WO2009027993 (2009), International Application no: PCT/IN2008/000512, Euporean patent: EP 2201636B1 (2013).

3.   A. K. Shukla, S. Pitchumani, P. Sridhar, S. D. Bhat, A. Manokaran and A. K. Sahu, A    polymeric hybrid membrane, PCT Patent, WO2009110001 (2009).

 

 

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