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High Density Active-Site MnO2 Nanofibers for Energy Storage and Conversion Applications

Published online by Cambridge University Press:  10 February 2011

T. D. Xiao ,
D. E. Reisner  and
P. R. Strutt
T. D. Xiao
Affiliation:
US Nanocorp, Inc., 20 Washington Avenue, North Haven, CT 06473
D. E. Reisner
Affiliation:
US Nanocorp, Inc., 20 Washington Avenue, North Haven, CT 06473
P. R. Strutt
Affiliation:
US Nanocorp, Inc., 20 Washington Avenue, North Haven, CT 06473
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Abstract

This investigation involves the synthesis of MnO2 nanofibrous materials, via an aqueous chemical synthesis route. A critical step in the synthesis is the extended period of the refluxing of the reactive constituents, which enables the gradual transformation of the initial amorphous nanoparticles into a random-weave nanofibrous structure, in the form of a bird's nest superstructure. The bird's nest has a diameter of approximately 10 μm, which is an assemblage of many individual nanofibers with a diameter of about 15 nm, and a length up to 1 μm. Partial transformation of the nanostructured MnO2 realizes a novel bimodal morphology, which combines a high density of chemically active sites with an enhanced percolation rate. Characterization of these nanofibers include SEM, TEM, surface area, and chemical analysis. High resolution TEM observations reveals that the as-synthesized MnO2 nanofibers contain lattice defects, including molecular pores, meso- and micro-pores.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 496: Symposium Y – Materials For Electrochemical Energy Storage & Conversion II… , 1997 , 409
Copyright
Copyright © Materials Research Society 1998

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References

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