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Title: Pushing Lithium–Sulfur Batteries towards Practical Working Conditions through a Cathode–Electrolyte Synergy

Journal Article · · Angewandte Chemie
 [1];  [1];  [2];  [2];  [1];  [1];  [1];  [1];  [2];  [2]; ORCiD logo [1];  [3]
  1. Chemical Sciences and Engineering Division Argonne National Laboratory 9700 S Cass Ave Lemont IL 60439 USA
  2. X-ray Sciences Division, Argonne National Laboratory 9700 S Cass Ave Lemont IL 60439 USA
  3. Chemical Sciences and Engineering Division Argonne National Laboratory 9700 S Cass Ave Lemont IL 60439 USA, Materials Science and Engineering Stanford University Stanford CA 94305 USA, Institute for Research&, Medical Consultations Imam Abdulrahman Bin Faisal University (IAU) Dammam Saudi Arabia

Abstract The commercialization of lithium–sulfur (Li−S) batteries is still hindered by the unsatisfactory cell performance under practical working conditions, which is mainly caused by the sluggish cathode redox kinetics, severe polysulfide shuttling, and poor Li stripping/plating reversibility. Herein, we report an effective strategy by combining Se‐doped S hosted in an ordered macroporous framework with a highly fluorinated ether (HFE)‐based electrolyte to simultaneously address the aforementioned issues in both cathode and anode. A reversible and stable high areal capacity of >5.4 mAh cm −2 with high Coulombic efficiency >99.2 % can be achieved under high areal Se/S loading (5.8 mg cm −2 ), while the underlying mechanism was further revealed through synchrotron X‐ray probes and Time‐of‐Flight Secondary Ion Mass Spectrometry (ToF‐SIMS). The practical application potential was further evaluated at low (0 °C) and high (55 °C) temperatures under high areal Se/S loading (>5.0 mg cm −2 ) and thin Li metal (40 μm).

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1866651
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 27 Vol. 134; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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