Clemson University

Medical University of South Carolina

Jian He

Fanglin Chen

Kyle S Brinkman

Shumin Fang

Terry M Tritt

Siwei Wang

Yufei Liu

Bo Zhang

A hydrogen permeation membrane is provided that can include a carbon-based material (C) and a ceramic material (BZCYT) mixed together. The carbon-based material can include graphene, graphite, carbon nanotubes, or a combination thereof. The ceramic material can have the formula BaZrCeYTO, where 0&#x2264;x&#x2264;0.5, 0&#x2264;y&#x2264;0.5, 0&#x2264;z&#x2264;0.5, (x+y+z)&#x3e;0; 0&#x2264;&#x3b4;&#x2264;0.5, and T is Yb, Sc, Ti, Nb, Ta, Mo, Mn, Fe, Co, Ni, Cu, Zn, Ga, In, or a combination thereof. In addition, the BZYCT can be present in the C-BZCYT mixture in an amount ranging from about 40% by volume to about 80% by volume. Further, a method of forming such a membrane is also provided. A method is also provided for extracting hydrogen from a feed stream.

Graphene-ceramic composite membrane for hydrogen separation membranes

The invention is directed to CVD methods and systems that can be utilized to form nanostructures. Exceptionally high product yields can be attained. In addition, the products can be formed with predetermined particle sizes and morphologies and within a very narrow particle size distribution. The systems of the invention include a CVD reactor designed to support the establishment of a convective flow field within the reactor at the expected carrier gas flow rates. In particular, the convective flow field within the reactor can include one or more flow vortices. The disclosed invention can be particularly beneficial for forming improved thermoelectric materials with high values for the figure of merit (ZT).

Convective flow chemical vapor deposition growth of nanostructures

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Clemson, SC, United States of America

Jian He