Temat: 88.80.ff - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effects of $TiO_2$ Source on the Electrochemical Performance of $Li_4Ti_5O_{12}$
Autorzy:: Kiliç Dokan, F.
Şahan, H.
Özdemır, N.
Özdemır, B.
Patat, Ş.
Powiązania:: https://bibliotekanauki.pl/articles/1311661.pdf
Data publikacji:: 2014-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 88.80.ff
Opis:: This study examined the formation mechanism of $Li_4Ti_5O_{12}$ by a ball mill assisted solid-state reaction between $Li_2CO_3$ and $TiO_2$ for applications in lithium ion batteries, also effects of $TiO_2$ source such as rutile type and anatase type on the electrochemical performance of $Li_{4}Ti_5O_{12}$. However, it is believed that the particle properties may depend significantly on the synthesis process and starting materials, which lead to final products with a range of sizes, morphologies, and even phases.
Źródło:: Acta Physica Polonica A; 2014, 125, 2; 650-651
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Synthesis and Characterization of Spinel $Li_4Ti_5O_{12}$ Anode Material by CTAB Assisted Sol-Gel Method
Autorzy:: Kiliç Dokan, F.
Şahan, H.
Özdemır, B.
Özdemır, N.
Patat, Ş.
Powiązania:: https://bibliotekanauki.pl/articles/1293936.pdf
Data publikacji:: 2014-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 88.80.ff
Opis:: Recently, there has been considerable interest in $Li_4Ti_5O_{12}$ as a potential anode for use in lithium ion batteries. It has many advantages compared to the currently used graphite. It has a good reversibility but no structural change. The material has a theoretical specific capacity of 175 mAh $g^{-1}$. $Li_4Ti_5O_{12}$ powders are usually synthesized by a solid-state reaction of lithium and titanium salts. This method was generally preferred because the synthesis procedures are simple. But there are some disadvantages of solid-state methods such as larger particle size of the products, inhomogeneous distribution, lack of stoichiometry control, etc. These disadvantages can be overcome by sol-gel method. Using surfactant in sol-gel method is easy control on crystal growth and size of the desired products.
Źródło:: Acta Physica Polonica A; 2014, 125, 2; 648-649
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: The Effect of Multiple Cation (Al, Si, Ti, Co) Doping on Electrochemical Performance οf $LiMn_2O_4$ Cathode Active Material
Autorzy:: Kılıç Dokan, F.
Şahan, H.
Veziroğlu, S.
Akkuş Taş, N.
Aydın, A.
Patat, Ş.
Powiązania:: https://bibliotekanauki.pl/articles/1399894.pdf
Data publikacji:: 2013-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 88.80.ff
Opis:: In order to improve the cycling performance of $LiMn_2O_4$, the spinel phases base and multiple cation doped $LiMn_{1.95}Al_{0.0125}Si_{0.0125}Ti_{0.0125}Co_{0.0125}O_4$, $LiMn_{1.9}Al_{0.025}Si_{0.025}Ti_{0.025}Co_{0.025}O_4$ spinels were synthesized by the glycine-nitrate combustion process. The structures of the products were investigated by X-ray diffraction, scanning electron microscopy and electrochemical tests.
Źródło:: Acta Physica Polonica A; 2013, 123, 2; 365-367
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Improvement of Cycling Stability of $LiMn_2O_4$ Cathode by $Al_2O_3$ Surface Coating for Li-Ion Batteries
Autorzy:: Şahan, H.
Göktepe, H.
Kılıç Dokan, F.
Aydın, A.
Veziroğlu, S.
Patat, Ş.
Powiązania:: https://bibliotekanauki.pl/articles/1399895.pdf
Data publikacji:: 2013-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 88.80.ff
Opis:: The effect of the $Al_2O_3$ coating on the charge-discharge cycling performance of spinel powder ($LiMn_2O_4$) was investigated in the range of 3.5-4.5 V at 1C. The $Al_2O_3$ coating on the surface of the spinel powder was carried out using the solution method, followed by 500C for 6 h in air. Powder X-ray diffraction pattern of the $Al_2O_3$-coated spinel $LiMn_2O_4$ showed that the $Al_2O_3$ coating medium was not incorporated in the spinel bulk structure. Scanning electron microscopy results showed that the $Al_2O_3$ coating particles were homogeneously distributed on the surface of $LiMn_2O_4$ powder particles. The $Al_2O_3$-coated $LiMn_2O_4$ retained 92.3% of its original capacity after 30 cycles, showing much better cycle ability than the bare lithium manganese oxide. The improvement of electrochemical performance is attributed to suppression of $Mn^{2+}$ dissolution into electrolyte via $Al_2O_3$ layer.
Źródło:: Acta Physica Polonica A; 2013, 123, 2; 368-370
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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