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Kurungot Dr. S.

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Scientist : Physical And Materials Chemistry

+91-20-25902566 +91-20-25902636

k.sreekumar@ncl.res.in

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MY AREAS OF EXPERTISE

Materials Chemistry, Nanotechnology

MY RESEARCH INTERESTS

 

PEM fuel cell system development and performance evaluation

We are one of the active groups dealing with the largest PEM fuel cell programme in the nation, funded by CSIR. Our contribution towards this project includes membrane electrode assembly (MEA) fabrication, single cell analysis through electrochemical evaluation, accelarated durability testing and stack building. A key aspect of our activity is development of high temperature PEM fuel cell MEAs which meet the benchmark performance shown by commercial HT-PEM MEAs available in the market.

High temperature PEM MEA.JPG

New materials for supercapacitor applications

Our solid efforts to develop materials with improved charge storage resulted in fabricating 1-D architecture of PEDOT over CNF walls with unique features including high porosity and conductivity, which are the two essential requirements for developing high performance supercapacitors. Precise control on the growth of a thin layer of PEDOT over the inner and outer surfaces of the solid template leads to a significant enhancement in the conductivity of the material. The tubular morphology of CNF with its open tips provides facile routes for the electrolyte and hence the overall utilization of the active surface area for charge storage could be improved significantly.

Supercap Electrode.JPG

Core-shell structured nanomaterials for electrocatalytic applications

Pt-based core–shell nanoparticles of non-noble metals as electrocatalysts is an emerging research area as these classes of materials can offer great scope for cost reduction as well as promising electrochemical stability. Pt as a protective thin shell significantly helps the non-noble metal core to attain greater electrochemical stability in the operating electrochemical environment of PEMFCs due to favarouble changes in the elecronic structure of Pt. Our group has already developed carbon supported Cu–Pt core–shell catalyst, comprising a Cu core and a Pt shell (Cu@Pt/C) with controlled Pt shell thickness. We adopted an effective strategy for preparing well dispersed carbon supported core–shell nanoparticles of Pt possessing remarkable electrocatalytic activities.

Core-shell materials.jpg

Metal-free electrodes for polymer electrolyte membrane fuel cells

Heteroatom-doped carbon nanostructures are known to have encouraging catalytic activity towards ORR both as catalyst support and catalyst, although the activity is limited by the availability of the doped moieties.The enhanced catalytic activity is associated with the presence of electron donating nitrogen atoms and higher exposure of edge planes. Among non-noble catalyst systems, transition metal (Fe, Co) based chelates supported on carbon show appreciable catalytic activity towards ORR. Our group explores the possibility to construct composites based on iron nitride, a promising non-noble catalyst, with various carbon nanomorphologies such as graphene, carbon nanofibers, carbon nanohorns and carbon nanotubes etc. by making use of thier fascinating morpholigical featers.

N-doped perforamce.jpg

Nanostructured multifunctional materials for electrochemical power sources

New generation electrode materials with high level of catalyst activity and utilization, proper mass transfer rate and balanced electron and proton conductivity are needed to maximize the turn-over frequency of catalyst systems and thereby the total efficiency of fuel cells. A systematic approach considering all the key parts including catalyst support, catalyst particles and ionomer-catalyst-gas pore triple-phase boundary (TPB) is essential towards the realization of this goal. We investigate novel strategies of developing electrocatalyst materials possessing multifunctional characteristics required to simultaneously address the persisting issues in the area of utilization and performance improvement for various electrochemical applications.

Hybrid Material.jpg

ACADEMIC QUALIFICATION

 

Ph.D Chemistry,  (1999)

Cochin University Of Sc. And Tech.

M. Sc. Chemistry,  (1994)

University Of Calicut

B.Sc. Chemistry,  (1992)

University Of Calicut

PROFESSIONAL EXPERIENCE

 

Toyota Motor CorporationToyotashi

Scientist
2003-2007

The University of Tokyo, Department of Chemical System Engineering,Tokyo

Post Doctoral Researcher
2001-2003

Korea Institute of Science & Technology (KIST), Center for Facilitated Transport MembranesSeoul

Post Doctoral Researcher
2000-2001

PUBLICATIONS

 

Fe(III) phytate metallogel as a prototype anhydrous, intermediate temperature proton conductor

Chemical Science  (2015)
Dr. Sreekumar Kurungot, Dr. Rahul Banerjee, Aiyappa, HB, Saha, S, Wadge, P

Carbon Nanohorn-Derived Graphene Nanotubes as a Platinum-Free Fuel Cell Cathode

ACS APPLIED MATERIALS & INTERFACES  (2015)
Dr. Sreekumar Kurungot, Unni, SM, Illathvalappil, R, Bhange, SN, Puthenpediakkal, H

AWARDS & HONORS

 

NCL-RF Scientist of the Year Award

2011

PATENTS

 

High aspect ratio nanoscale multifunctional materials

20120245018
Sreekumar Kurungot, Beena Kalasaparambil Balan, Ulhas Kanhaiyalal Kharul, Vijayamohanan Kunjuukrishna Pillai

Solid polymer fuel cell and method for producing MEA used for solid polymer fuel cell

8124297
Sreekumar Kurungot, Hirokazu Ishimaru

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Contact

CSIR- National Chemical Laboratory (NCL)
Dr. Homi Bhabha Road, Pune- 411008, India. Tel. :+91-20-2590 2000, 25893400;
Fax :+91-20-2590 2660.

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