Hierarchical Nanocomposite Based on Na2Ti3O7 and Fe2O3 for Electrochemical Sodium Ion Storage: Preparation and Characterization | Sciact - CRIS-система Института катализа

Hierarchical Nanocomposite Based on Na2Ti3O7 and Fe2O3 for Electrochemical Sodium Ion Storage: Preparation and Characterization Научная публикация

Журнал

Journal of Energy Storage
ISSN: 2352-152X

Вых. Данные

Год: 2025, Том: 128, Номер статьи : 117227, Страниц : 9 DOI: 10.1016/j.est.2025.117227

Ключевые слова

Sodium-ion batteries; Anode; Na2Ti3O7; Nanocomposite; Fe2O3; Hydrothermal synthesis

Авторы

Opra Denis P. ¹ , Neumoin Anton I. ¹ , Sinebryukhov Sergey L. ¹ , Sokolov Alexander A. ¹ , Stonkus Olga A. ² , Ustinov Alexander Yu. ¹ , Gerasimenko Andrey V. ¹ , Gnedenkov Sergey V. ¹

Организации

1	Institute of Chemistry, Far Eastern Branch of RAS, 100-letiya Vladivostoka pr., 159, Vladivostok 690022, Russia
2	Boreskov Institute of Catalysis, Siberian Branch of RAS, Lavrentyev ave., 5, Novosibirsk, 630090, Russia

A key task nowadays is the development of novel materials and the enhancement of known ones in order to design high-performance anodes for sodium-ion batteries. This article presents a one-pot method of preparing a nanocomposite with hierarchical structure based on sodium trititanate and iron(III) oxide. In this method, simultaneous hydrothermal treatment of TiO2 and FeCl3 in a concentrated NaOH solution results in the formation of microscale particles self-assembled of Na2Ti3O7 nanotubes and Fe2O3 nanospheres. A Na2Ti3O7–Fe2O3 nanocomposite is being investigated for the first time as a potential anode material for sodium-ion batteries. It was found that combining Na2Ti3O7 with Fe2O3 as a high-capacitive modifier within the hierarchical structure improves Na-ion storage performance. Its specific capacity reaches about 220 and 50 mAh g−1 at 0.1C and 4С, respectively. The pure Na2Ti3O7 gives only around 145 and 10 mAh g−1 at the same current densities. Besides, the Na2Ti3O7–Fe2O3 nanocomposite operates stably during 1000 charge/discharge cycles at a rate of 2C with a reversible capacity of 90 mAh g−1, whereas both pure Na2Ti3O7 and Fe2O3 exhibit worse long-term performance. These findings improve our knowledge of how to combine different materials in order to enhance their functionalities for application as an anode in sodium-ion batteries.

Opra D.P. , Neumoin A.I. , Sinebryukhov S.L. , Sokolov A.A. , Stonkus O.A. , Ustinov A.Y. , Gerasimenko A.V. , Gnedenkov S.V.
Hierarchical Nanocomposite Based on Na2Ti3O7 and Fe2O3 for Electrochemical Sodium Ion Storage: Preparation and Characterization
Journal of Energy Storage. 2025. V.128. 117227 :1-9. DOI: 10.1016/j.est.2025.117227 Scopus

Поступила в редакцию:	25 дек. 2024 г.
Принята к публикации:	25 мая 2025 г.
Опубликована online:	29 мая 2025 г.
Опубликована в печати:	30 авг. 2025 г.

Scopus:

2-s2.0-105006716120

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