Metal-Free Polymer-Based Current Collector for High Energy Density Lithium-Metal Batteries
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00598604" target="_blank" >RIV/61389005:_____/24:00598604 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/smll.202404437" target="_blank" >https://doi.org/10.1002/smll.202404437</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/smll.202404437" target="_blank" >10.1002/smll.202404437</a>
Alternative languages
Result language
angličtina
Original language name
Metal-Free Polymer-Based Current Collector for High Energy Density Lithium-Metal Batteries
Original language description
The energy density of lithium-metal batteries (LMBs) relies substantially on the thickness of the lithium-metal anode. However, a bare, thin lithium foil electrode is vulnerable to fragmentation due to the inhomogeneity of the lithium stripping/plating process, disrupting the electron conduction pathway along the electrode. Accordingly, the current collector is an integral part to prevent the resulting loss of electronic conductivity. However, the common use of a heavy and lithiophobic Cu current collector results in a great anode mass increase and unsatisfactory lithium plating behavior, limiting both the achievable specific energy and the cycle life of LMBs. Herein, a metal-free polymer-based current collector is reported that allows for a substantial mass reduction, while simultaneously extending the cycle life of the lithium-metal anode. The specific mass of the ultra-light, 10 mu m thick polymer-based current collector is only 1.03 mg cm(-2), which is approximate to 11% of a 10 mu m thick copper foil (8.96 mg cm(-2)). As a result, LMB cells employing this novel current collector provide a specific energy of 448 Wh kg(-1), which is almost 18% higher than that of LMBs using the copper current collector (378 Wh kg(-1)), and a greatly enhanced cycle life owing to a more homogeneous lithium deposition.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Small
ISSN
1613-6810
e-ISSN
1613-6829
Volume of the periodical
20
Issue of the periodical within the volume
48
Country of publishing house
DE - GERMANY
Number of pages
11
Pages from-to
2404437
UT code for WoS article
001311543500001
EID of the result in the Scopus database
2-s2.0-85203635496