Enhanced performance of Si-based Li-ion batteries through elastic cushioning with hollow graphene shells
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F22%3A10251031" target="_blank" >RIV/61989100:27710/22:10251031 - isvavai.cz</a>
Result on the web
<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:000798084500001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:000798084500001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s40843-021-2031-8" target="_blank" >10.1007/s40843-021-2031-8</a>
Alternative languages
Result language
angličtina
Original language name
Enhanced performance of Si-based Li-ion batteries through elastic cushioning with hollow graphene shells
Original language description
Silicon (Si) is a promising anode material for next-generation Li-ion batteries. The nanometer-sized Si could alleviate the pulverization caused by large volume changes during deep cycling. However, compression between agglomerated Si particles causes Si cracking and electrode failure. Considering this, we engineered a mechanical cushioning space between Si particles via elastic hollow graphene shells (GSs) to flexibly buffer volume changes and maintain the stability of the electrode structure. The stress generated from the Si volume expansion during lithiation was mechanically buffered and gently released by compression of the hollow space of the GS. In this Si/GS composite electrode, GS also reduced the local agglomeration of Si particles and effectively improved the overall conductivity. Considering these advantages, the designed Si/GS electrode showed an enhanced cycling performance with more than 1200 mA h g(-1) at 0.8 A g(-1) and an excellent rate capability of 1025 mA h g(-1) at 4 A g(-1) after 200 cycles.
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
20400 - Chemical engineering
Result continuities
Project
<a href="/en/project/EF16_019%2F0000853" target="_blank" >EF16_019/0000853: Institute of Environmental Technology - Excellent Research</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Science China-Materials
ISSN
2095-8226
e-ISSN
2199-4501
Volume of the periodical
Neuveden
Issue of the periodical within the volume
September 2022
Country of publishing house
CN - CHINA
Number of pages
11
Pages from-to
nestrankovano
UT code for WoS article
000798084500001
EID of the result in the Scopus database
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