Stable Li Metal Anode by a Hybrid Lithium Polysulfidophosphate/Polymer Crosslinking Film
Journal Article
·
· ACS Energy Letters
- Pennsylvania State Univ., University Park, PA (United States); PENNSYLVANIA STATE UNIVERSITY
- Pennsylvania State Univ., University Park, PA (United States)
The practical application of rechargeable lithium (Li) metal batteries has long been hindered by the unstable Li metal anode with problems like Li dendrite growth, low Coulombic efficiency (CE), and short cycle life. Here, we demonstrate a multifunctional sulfur-containing hybrid Li polysulfidophosphate and poly(2-chloroethyl acrylate) cross-linking film that can provide effective protection for Li metal anode. This film can facilitate Li metal anode generating a stable organic/inorganic hybrid solid electrolyte interphase (SEI) layer containing multiple components such as polymer-tethered organo(poly)sulfide, inorganic Li polysulfidophosphate, Li sulfides, and Li salts. Thanks to this hybrid robust SEI layer, dendrite-free Li deposition and stable cycling of Li metal anode can be achieved (e.g. CE >98.7% over 950 cycles). We demonstrated this Li protection technique enables both the protected Li metal anode and Li-metal-free anode cycling with significantly improved CEs and stability in full cells using LiFePO4 (~2.4 mAh/cm2) cathode.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
- Grant/Contract Number:
- EE0007795
- OSTI ID:
- 1657237
- Alternate ID(s):
- OSTI ID: 1614071
- Journal Information:
- ACS Energy Letters, Journal Name: ACS Energy Letters Journal Issue: 6 Vol. 4; ISSN 2380-8195
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Porosity‐ and Graphitization‐Controlled Fabrication of Nanoporous Silicon@Carbon for Lithium Storage and Its Conjugation with MXene for Lithium‐Metal Anode
|
journal | December 2019 |
Stable lithium metal anodes enabled by inorganic/organic double-layered alloy and polymer coating
|
journal | January 2019 |
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