AI Article Synopsis
- The research explores the use of porous organic cages (POCs) as quasi-solid-state electrolytes (QSSEs) in lithium-metal batteries (LMBs), highlighting their potential for improving ion transport.
- The POC-based QSSE exhibits impressive properties, including a Li transference number of 0.67, ionic conductivity of 1.25 × 10 S cm, and low activation energy of 0.17 eV, enabling efficient lithium deposition and reversible plating/stripping for over 2000 hours.
- As a result, the LMB using this QSSE shows strong cycling performance, with 85% capacity retention after 1000 cycles, suggesting POCs could also benefit other energy-storage systems like sodium and potassium
Article Abstract
Porous organic cages (POCs) with permanent porosity and excellent host-guest property hold great potentials in regulating ion transport behavior, yet their feasibility as solid-state electrolytes has never been testified in a practical battery. Herein, we design and fabricate a quasi-solid-state electrolyte (QSSE) based on a POC to enable the stable operation of Li-metal batteries (LMBs). Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC, the resulting POC-based QSSE exhibits a high Li transference number of 0.67 and a high ionic conductivity of 1.25 × 10 S cm with a low activation energy of 0.17 eV. These allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 h. As a proof of concept, the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85% capacity retention after 1000 cycles. Therefore, our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems, such as Na and K batteries.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11480285 | PMC |
| http://dx.doi.org/10.1007/s40820-024-01499-x | DOI Listing |
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