A functional carbon layer-coated separator for high performance lithium sulfur batteries

A functional carbon layer-coated separator for high performance lithium sulfur batteries A composite separator consisting of a functional layer of conductive carbon on the cathode-side of a Celgard separator has been investigated to improve the electrochemical performance of lithium sulfur batteries. The cell with functional carbon layer-coated separator can reach a high initial capacity of 1070mAhg−1 at the rate of 0.5C, and maintain a high capacity retention ratio with the capacity of 778mAhg−1 after 100th charge/discharge cycle. Besides, the coulombic efficiency of the cell with functional carbon layer-coated separator rises from 80% to nearly 90% without the addition of LiNO3 additive, which indicates the reduction of shuttle effect. The improved cell performance is attributed to the functional carbon-coating layer, which serves as an upper current collector to facilitate electron transport for high active-material utilization and a conductive network for trapping and depositing dissolved sulfur-containing active materials, as confirmed by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Solid State Ionics Elsevier

A functional carbon layer-coated separator for high performance lithium sulfur batteries

Loading next page...
 
/lp/elsevier/a-functional-carbon-layer-coated-separator-for-high-performance-qZA0Akp6pB
Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier B.V.
ISSN
0167-2738
eISSN
1872-7689
D.O.I.
10.1016/j.ssi.2015.06.018
Publisher site
See Article on Publisher Site

Abstract

A composite separator consisting of a functional layer of conductive carbon on the cathode-side of a Celgard separator has been investigated to improve the electrochemical performance of lithium sulfur batteries. The cell with functional carbon layer-coated separator can reach a high initial capacity of 1070mAhg−1 at the rate of 0.5C, and maintain a high capacity retention ratio with the capacity of 778mAhg−1 after 100th charge/discharge cycle. Besides, the coulombic efficiency of the cell with functional carbon layer-coated separator rises from 80% to nearly 90% without the addition of LiNO3 additive, which indicates the reduction of shuttle effect. The improved cell performance is attributed to the functional carbon-coating layer, which serves as an upper current collector to facilitate electron transport for high active-material utilization and a conductive network for trapping and depositing dissolved sulfur-containing active materials, as confirmed by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS).

Journal

Solid State IonicsElsevier

Published: Oct 1, 2015

References

  • Nano Res.
    Zhang, K.; Zhao, Q.; Tao, Z.L.; Chen, J.
  • Nat. Commun.
    She, Z.W.; Li, W.Y.; Cha, J.J.; Zheng, G.Y.; Yang, Y.; Mcdowell, M.T.; Hsu, P.C.; Cui, Y.
  • Nat. Commun.
    Su, Y.S.; Manthiram, A.
  • Chem. Commun.
    Tao, X.Y.; Chen, F.; Xia, Y.; Huang, H.; Gan, Y.P.; Chen, X.R.; Zhang, W.K.
  • Nano Lett.
    Zhou, W.D.; Xiao, X.C.; Cai, M.; Yang, L.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off