Morphological transformations and electrochemical properties of hydrothermally synthesized MnO2 nanostructures

A. J. Shahani, J. Wu, L. Wu, Q. Wang, X. D. Zhou

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

MnO2 nanostructures with various morphologies were synthesized by the hydrothermal method with control over the reaction temperature and dwell time. One dimensional (1D) nanoneedle structure can self-assemble to form three dimensional (3D) microspheres of MnO2 nanoneedles at 95°C by extending the dwell time from 3 hours to 15 hours. Alternatively, the 3D microspheres of nanoneedles can transform into 1D nanobelts and nanorods by increasing the reaction temperature to 120°C and 165°C, respectively, while maintaining constant dwell time of 15 hours. The supercapacitance of these nanostructures shows strong morphology dependence, and nanobelts have the highest specific capacitance of 323.7 F g-1.

Original languageEnglish
Title of host publicationSolid State Ionic Devices 8 - NEMCA
PublisherElectrochemical Society Inc.
Pages185-193
Number of pages9
Edition40
ISBN (Electronic)9781566778985
ISBN (Print)9781607682509
DOIs
StatePublished - 2010
EventSolid State Ionic Devices 8 - NEMCA - 218th ECS Meeting - Las Vegas, NV, United States
Duration: 10 Oct 201015 Oct 2010

Publication series

NameECS Transactions
Number40
Volume33
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceSolid State Ionic Devices 8 - NEMCA - 218th ECS Meeting
Country/TerritoryUnited States
CityLas Vegas, NV
Period10/10/1015/10/10

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