CaltechAUTHORS
Published December 14, 2018 | Version Accepted Version
Journal Article Open

Vertically-aligned graphene nanowalls grown via plasma-enhanced chemical vapor deposition as a binder-free cathode in Li-O_2 batteries

Creators

  • 1. ROR icon National Taiwan University
  • 2. ROR icon California Institute of Technology
  • 3. ROR icon National Taipei University of Technology

Abstract

In the present report, vertically-aligned graphene nanowalls are grown on Ni foam (VA-G/NF) using plasma-enhanced chemical vapor deposition method at room temperature. Optimization of the growth conditions provides graphene sheets with controlled defect sites. The unique architecture of the vertically-aligned graphene sheets allows sufficient space for the ionic movement within the sheets and hence enhancing the catalytic activity. Further modification with ruthenium nanoparticles (Ru NPs) drop-casted on VA-G/NF improves the charge overpotential for lithium–oxygen (Li–O_2) battery cycles. Such reduction we believe is due to the easier passage of ions between the perpendicularly standing graphene sheets thereby providing ionic channels.

Additional Information

© 2018 IOP Publishing Ltd. As the Version of Record of this article is going to be/has been published on a subscription basis, this Accepted Manuscript will be available for reuse under a CC BY-NC-ND 3.0 licence after a 12 month embargo period. Received 28 June 2018; Accepted 21 September 2018; Accepted Manuscript online 21 September 2018; Published 11 October 2018. We thank the financial support from the Ministry of Science and Technology (Contract Nos. MOST 106-2112-M-003-007-MY3 and MOST 107-2113-M-002-008-MY3).

Attached Files

Accepted Version - Han+et+al_2018_Nanotechnology_10.1088_1361-6528_aae362.pdf

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Han+et+al_2018_Nanotechnology_10.1088_1361-6528_aae362.pdf

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Additional details

Additional titles

Alternative title
Vertically-aligned graphene nanowalls grown via plasma-enhanced chemical vapor deposition as a binder-free cathode in Li-O2 batteries

Identifiers

Eprint ID
90200
Resolver ID
CaltechAUTHORS:20181009-133528785

Funding

Ministry of Science and Technology (Taipei)
106-2112-M-003-007-MY3
Ministry of Science and Technology (Taipei)
107-2113-M-002-008-MY3

Dates

Created
2018-10-10
Created from EPrint's datestamp field
Updated
2022-07-12
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Physics Department