Abstract
Current sulfide solid-state electrolyte (SE) membranes utilized in all-solid-state lithium batteries (ASLBs) have a high thickness (0.5–1.0 mm) and low ion conductance (<25 mS), which limit the cell-level energy and power densities. Based on ethyl cellulose's unique amphipathic molecular structure, superior thermal stability, and excellent binding capability, this work fabricates a freestanding SE membrane with an ultralow thickness of 47 µm. With ethyl cellulose as an effective disperser and a binder, the Li6PS5Cl is uniformly dispersed in toluene and possesses superior film formability. In addition, an ultralow areal resistance of 4.32 Ω cm−2 and a remarkable ion conductance of 291 mS (one order higher than the state-of-the-art sulfide SE membrane) are achieved. The ASLBs assembled with this SE membrane deliver cell-level high gravimetric and volumetric energy densities of 175 Wh kg−1 and 675 Wh L−1, individually.
| Original language | English |
|---|---|
| Article number | 2105505 |
| Journal | Advanced Materials |
| Volume | 33 |
| Issue number | 52 |
| DOIs | |
| State | Published - Dec 29 2021 |
Funding
H.Z. acknowledges the financial support from National Science Foundation under Award Number CBET-ES-1924534 and Rogers Corporation. S.O. and X.Z. acknowledge the support from the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office. The authors would like to acknowledge Dr. Yaning Li and Dr. Tiantian Li in the Department of Mechanical and Industry Engineering at Northeastern University for the help with compression measurement and the Northeastern University Center for Renewable Energy Technology for the use of SEM facilities. This paper was authored in part by UT-Battelle LLC under contract DE-AC05-00OR22725 with DOE. The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). H.Z. acknowledges the financial support from National Science Foundation under Award Number CBET‐ES‐1924534 and Rogers Corporation. S.O. and X.Z. acknowledge the support from the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office. The authors would like to acknowledge Dr. Yaning Li and Dr. Tiantian Li in the Department of Mechanical and Industry Engineering at Northeastern University for the help with compression measurement and the Northeastern University Center for Renewable Energy Technology for the use of SEM facilities. This paper was authored in part by UT‐Battelle LLC under contract DE‐AC05‐00OR22725 with DOE. The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid‐up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).
| Funders | Funder number |
|---|---|
| DOE Public Access Plan | |
| Department of Mechanical and Industry Engineering at Northeastern University | |
| Rogers Corporation | |
| National Science Foundation | CBET‐ES‐1924534 |
| U.S. Department of Energy | |
| Advanced Manufacturing Office | |
| Office of Energy Efficiency and Renewable Energy | |
| Northeastern University | |
| UT-Battelle | DE‐AC05‐00OR22725 |
