@article { ISI:000306674200026,
	title = {Disordered brownmillerite Ba2InCeO5+delta with enhanced oxygen reduction activity},
	journal = {Chemistry of Materials},
	volume = {24},
	number = {14},
	year = {2012},
	month = {JUL},
	pages = {2823-2828},
	publisher = {AMER CHEMICAL SOC},
	address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
	abstract = {<p>A disordered brownmillerite, Ba2InCeO5+delta, with slight tetragonal distortion from ideal cubic perovskite is synthesized and its oxygen reduction reactivity tested. The material displayed oxygen reduction behavior in alkaline solution comparable to that of standard 40 wt \% Pt/C catalyst and attractive activity characteristics which renders it a potential system for low temperature fuel cell applications.</p>},
	keywords = {brownmillerite, fuel cell, oxygen reduction reaction, Rietveld refinement},
	issn = {0897-4756},
	doi = {10.1021/cm301863x},
	author = {Jijil, Chamundi P. and Unni, SreeKuttan M. and Sreekumar, Kurungot and Devi, R. Nandini}
}
@article { ISI:000364355500053,
	title = {Carbon nanohorn-derived graphene nanotubes as a platinum-free fuel cell cathode},
	journal = {ACS Applied Materials \& Interfaces},
	volume = {7},
	number = {43},
	year = {2015},
	month = {NOV},
	pages = {24256-24264},
	publisher = {AMER CHEMICAL SOC},
	address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
	abstract = {<p>Current low-temperature fuel cell research mainly focuses on the development of efficient nonprecious electrocatalysts for the reduction of dioxygen molecule due to the reasons like exorbitant cost and scarcity of the current state-of-the-art Pt-based catalysts. As a potential alternative to such costly electrocatalysts, we report here the preparation of an efficient graphene nanotube based oxygen reduction electrocatalyst which has been derived from single walled nanohorns, comprising a thin layer of graphene nanotubes and encapsulated iron oxide nanopartides (FeGNT). FeGNT shows a surface area of 750 m(2)/g, which is the highest ever reported among the metal encapsulated nanotubes. Moreover, the graphene protected iron oxide nanoparticles assist the system to attain efficient distribution of Fe-N-x and quaternary nitrogen based active reaction centers, which provides better activity and stability toward the oxygen reduction reaction (ORR) in acidic as well as alkaline conditions. Single cell performance of a proton exchange membrane fuel cell by using FeGNT as the cathode catalyst delivered a maximum power density of 200 mW cm(-2) with Nafion as the proton exchange membrane at 60 degrees C. The facile synthesis strategy with iron oxide encapsulated graphitic carbon morphology opens up a new horizon of hope toward developing Pt-free fuel cells and metal-air batteries along with its applicability in other energy conversion and storage devices.</p>},
	keywords = {carbon nanohorns, carbon nanotube, electrocatalyst, fuel cell, oxygen reduction reaction},
	issn = {1944-8244},
	doi = {10.1021/acsami.5b07802},
	author = {Unni, SreeKuttan M. and Illathvalappil, Rajith and Bhange, Siddheshwar N. and Puthenpediakkal, Hasna and Kurungot, Sreekumar}
}
