Pulickel Ajayan Archives | The American Ceramic Society

Pulickel Ajayan

Squishy when cold—Graphene foam retains elasticity at cryogenic temperatures

By Lisa McDonald / April 30, 2019

Researchers from Nankai and Rice universities found their 3D cross-linked graphene foam could retain its reversible and robust compressive elasticity at temperatures near absolute zero, a property not observed previously for any other bulk material.

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How do ceramics compare? Comprehensive review stacks up recent lithium-ion battery research

By April Gocha / July 28, 2017

A lithium-ion battery research review by Rice University scientists stacks up cathode, anode, and electrolyte materials against one another, focusing on how batteries perform across a wide temperature range.

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Hexagonal boron nitride provides high-temp corrosion protection

By Jim Destefani / October 7, 2013

Researchers from Rice University, Houston, Tex., say they have discovered a new protective coating for high-temperature corrosion applications—hexagonal boron nitride.

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Clay-based composite key to high-temperature supercapacitors

By Jim Destefani / September 13, 2013

A clay-based composite electrolyte enables supercapacitors to operate at temperature of 200°C or more, according to Rice University researchers.

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Graphene on vanadium oxide ‘ribbons’ shows promise for lithium-ion battery cathodes

By Eileen De Guire / March 26, 2013

Graphene-coated ribbons of vanadium oxide, seen in a scanning electron microscope image, show promise as electrode for lithium-ion batteries, according to researchers at Rice University. (Credit: Ajayan Group/Rice University) Last week I told you about some fascinating work coming out of the University of Stuttgart on extremely flexible vanadium pentoxide paper like material. Researchers are…

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Two studies highlight battery advances—paintable Li-ion batteries and fast-charging Ni-Fe batteries

By Eileen De Guire / July 2, 2012

Rice University researchers have demonstrated a paint-on lithium ion battery. Credit: Rice University; You Tube. “The more things change, the more they stay the same,” according to a 19th century French proverb. It could not possibly have been a reference to batteries, which were invented also in the 19th century, but it does seem apropos…

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Video of the week: Rice University demos technique to ‘write’ supercapacitors on sheets of graphite oxide

By / August 9, 2011

A team led by Rice University professor Pulickel Ajayan has been experimenting with the property of graphite oxide to act as an ionic conductor when hydrated. One of the “tricks” they discovered is that they could use this property to make a sheet of GO into a working supercapacitor by writing patterns into it with a…

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