Surface Modification of Nanocrystalline LiMn2O4 Using Graphene Oxide Flakes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F21%3A10248018" target="_blank" >RIV/61989100:27360/21:10248018 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/1996-1944/14/15/4134" target="_blank" >https://www.mdpi.com/1996-1944/14/15/4134</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma14154134" target="_blank" >10.3390/ma14154134</a>

Result language
angličtina
Original language name
Surface Modification of Nanocrystalline LiMn2O4 Using Graphene Oxide Flakes
Original language description
In this work, a facile, wet chemical synthesis was utilized to achieve a series of lithium manganese oxide (LiMn2O4, (LMO) with 1-5%wt. graphene oxide (GO) composites. The average crystallite sizes estimated by the Rietveld method of LMO/GO nanocomposites were in the range of 18-27 nm. The electrochemical performance was studied using CR2013 coin-type cell batteries prepared from pristine LMO material and LMO modified with 5%wt. GO. Synthesized materials were tested as positive electrodes for Li-ion batteries in the voltage range between 3.0 and 4.3 V at room temperature. The specific discharge capacity after 100 cycles for LMO and LMO/5%wt. GO were 84 and 83 mAh g(-1), respectively. The LMO material modified with 5%wt. of graphene oxide flakes retained more than 91% of its initial specific capacity, as compared with the 86% of pristine LMO material.
Czech name
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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
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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