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Michalska M.♦, Buchberger D.A.♦, Jasiński J.B.♦, Thapa A.K.♦, Jain A., Surface modification of nanocrystalline LiMn2O4 using graphene oxide flakes,
Materials, ISSN: 1996-1944, DOI: 10.3390/ma14154134, Vol.14, No.15, pp.4134-1-13, 2021 Streszczenie:
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. Słowa kluczowe:
lithium manganese oxide, LiMn2O4, graphene oxide, cathode material, lithium ion battery Afiliacje autorów:
| Michalska M. | - | Łukasiewicz Research Network‒Institute of Electronic Materials Technology (PL) | | Buchberger D.A. | - | Uniwersytet Warszawski (PL) | | Jasiński J.B. | - | inna afiliacja | | Thapa A.K. | - | inna afiliacja | | Jain A. | - | IPPT PAN |
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