Title :
Nanostructured materials for energy storage and energy conversion devices
Author :
Reisner, David E. ; Xiao, T. Danny ; Strutt, Peter R. ; Salkind, Alvin J.
Author_Institution :
US Nanocorp, Inc., North Haven, CT, USA
fDate :
27 Jul-1 Aug 1997
Abstract :
US Nanocorp, Inc. (USN) has developed an aqueous solution reaction (ASR) technique scalable for high volume production of nanostructured materials (n-materials) for a wide range of applications. By definition, nanophase materials have at least one physical dimension less than 10 nanometers (nm) in length, an attribute which imparts exceptional properties to them because the particle dimensions are close to atomic dimensions and there are a very high fraction of atoms residing at nanocrystalline grain boundaries. The high surface area of these materials has significant implications with respect to energy storage devices with electrochemical active sites (batteries, ultracapacitors) and energy conversion devices depending on catalytic sites or defect structure (e.g., fuel cells and thermoelectric devices). Potential application areas in both energy conversion and energy storage are discussed. Morphological studies of manganese dioxide have revealed the existence of both nanoporosity and mesoporosity within unusual superstructures comprised of nanorod building blocks. Nanophase nickel hydroxide has also been synthesized. Preliminary electrochemical studies are reported
Keywords :
capacitor storage; crystal morphology; electrochemistry; fuel cells; manganese compounds; nanostructured materials; nickel compounds; secondary cells; thermoelectric devices; MnO2; Ni(OH)2; US Nanocorp; aqueous solution reaction; atomic dimensions; batteries; catalytic sites; defect structure; electrochemical active sites; electrochemical studies; energy conversion devices; energy storage devices; fuel cells; high surface area; manganese dioxide; mesoporosity; nanocrystalline grain boundaries; nanophase materials; nanoporosity; nanorod building blocks; nanostructured materials; particle dimensions; thermoelectric devices; ultracapacitors; Automatic speech recognition; Batteries; Energy conversion; Energy storage; Fuel cells; Grain boundaries; Nanostructured materials; Production; Supercapacitors; Surface morphology;
Conference_Titel :
Energy Conversion Engineering Conference, 1997. IECEC-97., Proceedings of the 32nd Intersociety
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-4515-0
DOI :
10.1109/IECEC.1997.661958