AI Article Synopsis
- Li-conducting solid polymer electrolytes (SPEs) created from self-assembled trimethylated cyclodextrin (TMCD), poly(ethylene oxide) (PEO), and lithium salt are explored for use in lithium-metal and lithium-ion batteries.
- The structure of these electrolytes features nanochannels that allow for rapid lithium-ion movement, which is enhanced by modifying the cyclodextrin component.
- Research shows that these modifications improve ionic conductivity, enabling the SPEs to support fast charging and discharging rates in lithium-metal batteries for over 200 cycles with high efficiency.
Article Abstract
Li-conducting solid polymer electrolytes (SPEs) obtained from supramolecular self-assembly of trimethylated cyclodextrin (TMCD), poly(ethylene oxide) (PEO), and lithium salt are investigated for application in lithium-metal batteries (LMBs) and lithium-ion batteries (LIBs). The considered electrolytes comprise nanochannels for fast lithium-ion transport formed by CD threaded on PEO chains. It is demonstrated that tailored modification of CD beneficially influences the structure and transport properties of solid polymer electrolytes, thereby enabling their application in LMBs. Molecular dynamics (MD) simulation and experimental data reveal that modification of CDs shifts the steady state between lithium ions inside and outside the channels, in this way improving the achievable ionic conductivity. Notably, the designed SPEs facilitated galvanostatic cycling in LMBs at fast charging and discharging rates for more than 200 cycles and high Coulombic efficiency.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsmacrolett.8b00406 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!