A high-resilience and conductive composite binder for lithium-sulfur batteries
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F20%3A63526225" target="_blank" >RIV/70883521:28610/20:63526225 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1385894720303958" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1385894720303958</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cej.2020.124404" target="_blank" >10.1016/j.cej.2020.124404</a>
Alternative languages
Result language
angličtina
Original language name
A high-resilience and conductive composite binder for lithium-sulfur batteries
Original language description
Binder is very important for the cycle stability of lithium-sulfur batteries under high sulfur loading. In this paper, we designed and prepared a waterborne polyurethane/polyacrylic acid/graphene (WPU/PAA/GN) multi-functional composite binder. The polyoxyethylene segments in WPU are used to promote the migration of lithium ions and provide high elongation. The introduction of polyacrylic acid (PAA) and graphene forms a double hydrogen bond network through simple in situ blending, which gives the binder higher strength and electronic conductivity. More importantly, the physical crosslinking of PAA and WPU can achieve high resilience and ensure the integrity of the cathode structure during charging and discharging. In addition, abundant polar functional groups provide strong chemical adsorption for lithium polysulfide. The synergistic effect of various components makes the binder possess the functions of high resilience, good electrical conductivity, and strong adsorption, which provides a simple and effective solution for the practical application of lithium-sulfur batteries. As a result, the assembled lithium-sulfur battery displayed a high initial discharge capacity of 1243 mAh g−1, good cycle stability (81% capacity retention after 500 cycles at 0.5 C) and superior rate performance.
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
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Engineering Journal
ISSN
1385-8947
e-ISSN
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Volume of the periodical
389
Issue of the periodical within the volume
Neuveden
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
9
Pages from-to
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UT code for WoS article
000519528800007
EID of the result in the Scopus database
2-s2.0-85079417922