Effect of Carbon Additives on the Electrochemical Performance of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C Anodes
The Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composites were prepared by a hydrothermal method with in situ carbon addition. The influence of the morphology and content of various carbon materials (conductive carbon black, mesoporous carbon G_157M, and carbon...
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MDPI AG
2020-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/15/3941 |
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| author | Irina Stenina Ruslan Shaydullin Tatiana Kulova Anna Kuz’mina Nataliya Tabachkova Andrey Yaroslavtsev |
| author_facet | Irina Stenina Ruslan Shaydullin Tatiana Kulova Anna Kuz’mina Nataliya Tabachkova Andrey Yaroslavtsev |
| author_sort | Irina Stenina |
| collection | DOAJ |
| description | The Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composites were prepared by a hydrothermal method with in situ carbon addition. The influence of the morphology and content of various carbon materials (conductive carbon black, mesoporous carbon G_157M, and carbon replicas) on the electrochemical performance of the Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composites was investigated. The obtained composites were characterized using X-ray diffraction, scanning electron microsopy, high-resolution transmission electron microscopy, thermogravimetric analysis, Raman spectroscopy, and N<sub>2</sub> sorption-desorption isotherms. Morphology of the Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composites depends on the carbon matrix used, while both morphology and the amount of carbon material have a great impact on the rate capability and cycling stability of the obtained composites. At low current densities, the Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composite with 5 wt.% G_157M exhibits the highest discharge capacity, while at high charge-discharge rates, the Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/carbon black composites show the best electrochemical performance. Thus, at ~0.1C, 5C, and 18C rates, the discharge capacities of the obtained Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composites are 175, 120, and 70 mAh/g for G_157M, 165, 126, and 78 mAh/g for carbon replicas, and 173, 128, and 93 mAh/g for carbon black. After 100 cycles, their capacity retention is no less than 95%, suggesting their promising application perspective. |
| first_indexed | 2024-03-10T18:02:39Z |
| format | Article |
| id | doaj.art-e468acb2cae64036af7f5c8b54282ce3 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T18:02:39Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e468acb2cae64036af7f5c8b54282ce32023-11-20T08:46:15ZengMDPI AGEnergies1996-10732020-08-011315394110.3390/en13153941Effect of Carbon Additives on the Electrochemical Performance of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C AnodesIrina Stenina0Ruslan Shaydullin1Tatiana Kulova2Anna Kuz’mina3Nataliya Tabachkova4Andrey Yaroslavtsev5Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky prospekt 31, 119991 Moscow, RussiaKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky prospekt 31, 119991 Moscow, RussiaFrumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, Leninsky prospekt 31-4, 119071 Moscow, RussiaFrumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, Leninsky prospekt 31-4, 119071 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Str., 119991 Moscow, RussiaKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky prospekt 31, 119991 Moscow, RussiaThe Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composites were prepared by a hydrothermal method with in situ carbon addition. The influence of the morphology and content of various carbon materials (conductive carbon black, mesoporous carbon G_157M, and carbon replicas) on the electrochemical performance of the Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composites was investigated. The obtained composites were characterized using X-ray diffraction, scanning electron microsopy, high-resolution transmission electron microscopy, thermogravimetric analysis, Raman spectroscopy, and N<sub>2</sub> sorption-desorption isotherms. Morphology of the Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composites depends on the carbon matrix used, while both morphology and the amount of carbon material have a great impact on the rate capability and cycling stability of the obtained composites. At low current densities, the Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composite with 5 wt.% G_157M exhibits the highest discharge capacity, while at high charge-discharge rates, the Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/carbon black composites show the best electrochemical performance. Thus, at ~0.1C, 5C, and 18C rates, the discharge capacities of the obtained Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C composites are 175, 120, and 70 mAh/g for G_157M, 165, 126, and 78 mAh/g for carbon replicas, and 173, 128, and 93 mAh/g for carbon black. After 100 cycles, their capacity retention is no less than 95%, suggesting their promising application perspective.https://www.mdpi.com/1996-1073/13/15/3941lithium ion batteryLi<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>mesoporous carboncarbon replica |
| spellingShingle | Irina Stenina Ruslan Shaydullin Tatiana Kulova Anna Kuz’mina Nataliya Tabachkova Andrey Yaroslavtsev Effect of Carbon Additives on the Electrochemical Performance of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C Anodes Energies lithium ion battery Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> mesoporous carbon carbon replica |
| title | Effect of Carbon Additives on the Electrochemical Performance of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C Anodes |
| title_full | Effect of Carbon Additives on the Electrochemical Performance of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C Anodes |
| title_fullStr | Effect of Carbon Additives on the Electrochemical Performance of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C Anodes |
| title_full_unstemmed | Effect of Carbon Additives on the Electrochemical Performance of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C Anodes |
| title_short | Effect of Carbon Additives on the Electrochemical Performance of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>/C Anodes |
| title_sort | effect of carbon additives on the electrochemical performance of li sub 4 sub ti sub 5 sub o sub 12 sub c anodes |
| topic | lithium ion battery Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> mesoporous carbon carbon replica |
| url | https://www.mdpi.com/1996-1073/13/15/3941 |
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