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Title | Advanced nanostructured anode materials for lithium-ion batteries |
Authors |
Khomenko, V.G.
Senyk, I.V. Barsukov, V.Z. |
ORCID | |
Keywords |
nanocomposite lithium-ion battery negative electrode |
Type | Conference Papers |
Date of Issue | 2011 |
URI | http://essuir.sumdu.edu.ua/handle/123456789/20598 |
Publisher | Sumy State University |
License | |
Citation | Khomenko, V.G. Advanced nanostructured anode materials for lithium-ion batteries [Текст] / V.G. Khomenko, I.V. Senyk, V.Z. Barsukov // Nanomaterials: applications & properties. Proceedings : 1-st International conference, Alushta, Crimea, 27-30 Semptember 2011 / Edited by: A. Pogrebnjak, T. Lyutyy, S. Protsenko. — Sumy : Sumy State University, 2011. — V.2, P.І. — C. 78-81. |
Abstract |
The more popular active material for negative electrode is usually flake graphite
due to its excellent cycle life (up to 1000 cycles). The main disadvantage of graphite is a
relatively low specific capacity, because even the theoretical value is QCth = 372
mA.h/g.
Si, Sn, Al, hard carbons and some other materials are actively investigated as the
alternate materials for lithium-ion batteries. However, they have not received a practical
application, since their large theoretical capacity is accompanied by sharp drop of capacity
(during the few cycles), high irreversible capacity (up to 50 % and more), nonhorizontal
shape of charge–discharge curves. The main reason of sharp capacity degradation
is considerable (in 2-4 times) volume changes of these materials during intercalation-
deintercalation of lithium ions.
We have formulated some theoretical principles and developed the experimental
composite nanostructured anode materials for lithium-ion batteries with high level of
specific capacity (up to 600 mA.h/g), quite stable cyclization, minimal irreversible
capacity (ca 8 %), horizontal shape of charge–discharge curves.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/20598 |
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