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- Title
Pushing Lithium–Sulfur Batteries towards Practical Working Conditions through a Cathode–Electrolyte Synergy.
- Authors
Zhao, Chen; Daali, Amine; Hwang, Inhui; Li, Tianyi; Huang, Xingkang; Robertson, David; Yang, Zhenzhen; Trask, Steve; Xu, Wenqian; Sun, Cheng‐Jun; Xu, Gui‐Liang; Amine, Khalil
- 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).
- Subjects
LITHIUM sulfur batteries; SECONDARY ion mass spectrometry
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 27, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202203466