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Synergy of polypyrrole and carbon x-aerogel in lithium-oxygen batteries.

Publication ,  Journal Article
Kim, CHJ; Varanasi, CV; Liu, J
Published in: Nanoscale
February 2018

A crucial step in the development of lithium-oxygen (Li-O2) batteries is to design an oxygen cathode with high catalytic activity and stable porous structure. Achieving such design requires an integrated strategy in which porosity, conductivity, catalytic activity, and mechanical durability are all considered in a battery system. Here, we develop polypyrrole-coated carbon x-aerogels with macroscopic 3D architecture, and demonstrate their potential as oxygen cathodes for Li-O2 batteries. This material, a novel and mechanically strong composite aerogel with polymer-cross-linked structure, not only provides effective pores that allow to store the discharge products and open channels for better oxygen diffusion, but also forms a robust 3D catalytic network that promotes both oxygen reduction and evolution reactions with improved mechanical and electrochemical stability. This work highlights the synergy between the 3D porous, conductive carbon aerogel framework and the polypyrrole catalytic layer, which maintains stable catalytic activity without deactivation and provides a more effective gas-liquid-solid interface for rapid oxygen absorption and diffusion, thereby leading to significant improvements in the capacity, rate capability and cycle life of the cathode.

Duke Scholars

Published In

Nanoscale

DOI

EISSN

2040-3372

ISSN

2040-3364

Publication Date

February 2018

Volume

10

Issue

8

Start / End Page

3753 / 3758

Related Subject Headings

  • Nanoscience & Nanotechnology
  • 51 Physical sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 10 Technology
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

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ICMJE
MLA
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Kim, C. H. J., Varanasi, C. V., & Liu, J. (2018). Synergy of polypyrrole and carbon x-aerogel in lithium-oxygen batteries. Nanoscale, 10(8), 3753–3758. https://doi.org/10.1039/c7nr08494c
Kim, Christine H. J., Chakrapani V. Varanasi, and Jie Liu. “Synergy of polypyrrole and carbon x-aerogel in lithium-oxygen batteries.Nanoscale 10, no. 8 (February 2018): 3753–58. https://doi.org/10.1039/c7nr08494c.
Kim CHJ, Varanasi CV, Liu J. Synergy of polypyrrole and carbon x-aerogel in lithium-oxygen batteries. Nanoscale. 2018 Feb;10(8):3753–8.
Kim, Christine H. J., et al. “Synergy of polypyrrole and carbon x-aerogel in lithium-oxygen batteries.Nanoscale, vol. 10, no. 8, Feb. 2018, pp. 3753–58. Epmc, doi:10.1039/c7nr08494c.
Kim CHJ, Varanasi CV, Liu J. Synergy of polypyrrole and carbon x-aerogel in lithium-oxygen batteries. Nanoscale. 2018 Feb;10(8):3753–3758.
Journal cover image

Published In

Nanoscale

DOI

EISSN

2040-3372

ISSN

2040-3364

Publication Date

February 2018

Volume

10

Issue

8

Start / End Page

3753 / 3758

Related Subject Headings

  • Nanoscience & Nanotechnology
  • 51 Physical sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 10 Technology
  • 03 Chemical Sciences
  • 02 Physical Sciences