Functional Differentiation of Three Pores for Effective Sulfur Confinement in Li–S Battery

Functional Differentiation of Three Pores for Effective Sulfur Confinement in Li–S Battery Shuttle effect of the dissolved intermediates is regarded as the primary cause that leads to fast capacity degradation of Li–S battery. Herein, a microporous carbon‐coated sulfur composite with novel rambutan shape (R‐S@MPC) is synthesized from microporous carbon‐coated rambutan‐like zinc sulfide (R‐ZnS@MPC), via an in situ oxidation process. The R‐ZnS is employed as both template and sulfur precursor. The carbon frame of R‐S@MPC composite possesses three kinds of pores that are distinctly separated from each other in space and are endowed with the exclusive functions. The central macropore serves as buffer pool to accommodate the dissolved lithium polysulfides (LPSs) and volumetric variation during cycling. The marginal straight‐through mesoporous, connected with the central macropore, takes the responsibility of sulfur storage. The micropores, evenly distributed in the outer carbon shell of the as‐synthesized R‐S@MPC, enable the blockage of LPSs. These pores are expected to perform their respective single function, and collaborate synergistically to suppress the sulfur loss. Therefore, it delivers an outstanding cycling stability, decay rate of 0.013% cycle−1 after 500 cycles at 1 C, when the sulfur loading is kept at 4 mg cm−2. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Small Wiley

Functional Differentiation of Three Pores for Effective Sulfur Confinement in Li–S Battery

Loading next page...
 
/lp/wiley/functional-differentiation-of-three-pores-for-effective-sulfur-uM0p9mg9oA
Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
© 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
1613-6810
eISSN
1613-6829
D.O.I.
10.1002/smll.201703279
Publisher site
See Article on Publisher Site

Abstract

Shuttle effect of the dissolved intermediates is regarded as the primary cause that leads to fast capacity degradation of Li–S battery. Herein, a microporous carbon‐coated sulfur composite with novel rambutan shape (R‐S@MPC) is synthesized from microporous carbon‐coated rambutan‐like zinc sulfide (R‐ZnS@MPC), via an in situ oxidation process. The R‐ZnS is employed as both template and sulfur precursor. The carbon frame of R‐S@MPC composite possesses three kinds of pores that are distinctly separated from each other in space and are endowed with the exclusive functions. The central macropore serves as buffer pool to accommodate the dissolved lithium polysulfides (LPSs) and volumetric variation during cycling. The marginal straight‐through mesoporous, connected with the central macropore, takes the responsibility of sulfur storage. The micropores, evenly distributed in the outer carbon shell of the as‐synthesized R‐S@MPC, enable the blockage of LPSs. These pores are expected to perform their respective single function, and collaborate synergistically to suppress the sulfur loss. Therefore, it delivers an outstanding cycling stability, decay rate of 0.013% cycle−1 after 500 cycles at 1 C, when the sulfur loading is kept at 4 mg cm−2.

Journal

SmallWiley

Published: Jan 1, 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 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

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

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial