Hierarchically Porous Multilayered Carbon Barriers for High‐Performance Li–S Batteries

Hierarchically Porous Multilayered Carbon Barriers for High‐Performance Li–S Batteries As one of the most promising energy storage devices, the practical application of lithium–sulfur batteries is limited by the low electrical conductivity of sulfur and the notable “shuttle effects” of sulfur‐based electrodes. In this work, we describe a hierarchically porous N‐doped zeolitic imidazolate framework‐8 (ZIF‐8)‐derived carbon nanosphere (N‐ZDC) with an outer shell and an inner honeycomb‐like interconnected nanosheet network as sulfur host material for high‐performance and long‐term lithium–sulfur batteries. The N‐ZDC serves as multilayered barrier against the dissolution of lithium polysulfides. The porously inner interconnected carbon network of the N‐ZDC facilitates the electron and ion transportation, ensures a high sulfur loading, and accommodates a volume expansion of the sulfur species. As a result, the optimized N‐ZDC4/S electrodes displayed high initial specific capacities of 1343, 1182, and 698 mAh g−1 at 0.5, 1, and 2 C, respectively, and an ultraslow capacity decay of only 0.048 % per cycle at 2 C over 800 cycles. Even with a high sulfur loading of 3.1 mg cm−2, N‐ZDC4/S still delivered a reversible capacity of 956 mAh g−1 and stabilizes at 544 mAh g−1 after 500 cycles at 0.5 C, revealing the great potential of the novel carbon nanospheres for energy storage application. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chemistry - A European Journal Wiley

Hierarchically Porous Multilayered Carbon Barriers for High‐Performance Li–S Batteries

Loading next page...
 
/lp/wiley/hierarchically-porous-multilayered-carbon-barriers-for-high-pniH1PBwed
Publisher
Wiley
Copyright
© 2018 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
0947-6539
eISSN
1521-3765
D.O.I.
10.1002/chem.201704757
Publisher site
See Article on Publisher Site

Abstract

As one of the most promising energy storage devices, the practical application of lithium–sulfur batteries is limited by the low electrical conductivity of sulfur and the notable “shuttle effects” of sulfur‐based electrodes. In this work, we describe a hierarchically porous N‐doped zeolitic imidazolate framework‐8 (ZIF‐8)‐derived carbon nanosphere (N‐ZDC) with an outer shell and an inner honeycomb‐like interconnected nanosheet network as sulfur host material for high‐performance and long‐term lithium–sulfur batteries. The N‐ZDC serves as multilayered barrier against the dissolution of lithium polysulfides. The porously inner interconnected carbon network of the N‐ZDC facilitates the electron and ion transportation, ensures a high sulfur loading, and accommodates a volume expansion of the sulfur species. As a result, the optimized N‐ZDC4/S electrodes displayed high initial specific capacities of 1343, 1182, and 698 mAh g−1 at 0.5, 1, and 2 C, respectively, and an ultraslow capacity decay of only 0.048 % per cycle at 2 C over 800 cycles. Even with a high sulfur loading of 3.1 mg cm−2, N‐ZDC4/S still delivered a reversible capacity of 956 mAh g−1 and stabilizes at 544 mAh g−1 after 500 cycles at 0.5 C, revealing the great potential of the novel carbon nanospheres for energy storage application.

Journal

Chemistry - A European JournalWiley

Published: Jan 12, 2018

Keywords: ; ; ; ;

References

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