Origin of enhanced stability of SiO anode via using carbon nanotubes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F23%3A10252884" target="_blank" >RIV/61989100:27710/23:10252884 - isvavai.cz</a>
Result on the web
<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:001043357100001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:001043357100001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s40843-023-2490-0" target="_blank" >10.1007/s40843-023-2490-0</a>

Result language
angličtina
Original language name
Origin of enhanced stability of SiO anode via using carbon nanotubes
Original language description
High-capacity SiO (SO)-based alloys are among the most promising anodes for next-generation lithium-ion batteries (LIBs). Challenges of SO-based anodes, including sluggish kinetics and poor stability, have been effectively mitigated by using carbon nanotubes (CNTs) as conductive additives. However, the underlying mechanism, apart from kinetics, remains elusive. Herein, we find that CNTs can help to maintain complete conductive networks of electrodes after cycling, ensuring uniform lithiation reaction. The alleviated local extra-huge volume expansion of SO will further suppress continuous solid-state interphase growth, active material delamination from the current collector, and even lithium plating. Accordingly, pure SO anode with CNTs (SO-CNTs) can cycle stably with the capacity retention of 96.2% over 200 cycles at 0.5 C (1 C = 1600 mA g(-1)). The function of CNTs is further proved in practical SO/graphite (SO650-CNTs, 1 C = 650 mA g(-1)) anode with a high capacity retention of 80.6% over 400 cycles at 1 C. This work provides a new perspective on the functional mechanism of conductive additives, and will accelerate the commercialization of alloy anodes in the battery industry.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10400 - Chemical sciences

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)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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